SUBJECT INDEX - Politechnika Śląska

( 785 )

SUBJECT INDEX[Tho letter “ A ” following a pago number denotes a reference to the present volume

of tho Journal dealing with abstracts, bibliography, book reviews, &e.]

Abrasion,resistance to, relation to hardness, 50,

559/1. study, 50, 243/1.

Abrasion of—Bearing alloys, 50, 253.-1.

Abrasives, carborundum, 50, 705.-1. diamond, 50, 705/1.fused alumina, adhesion of gluo, 50,

705.4. review, 50, 388/1.U.S. labels, 50, 193.-1.

Accounts, 48, 15.Acetylene. See Welding.Acids (seo also Corrosion and undor names

of acids), action on metals, 50, 303/1. dissolution of metals, 50, 27A ; periodic,

50, 83/1.; rate, 50, 357/1, 358/1.Admiralty bronze. Seo Bronzes.Admiralty gun-metal. Soo Gun-metal.Adsorption of—

Carbon monoxide by palladium, 50, 3.4. Hydrogen by platinum metals, 50,

530/1.Aeron, dynamic strength properties, 50,

B00/1.Aeroplanes. Seo Aircraft,Aerostatics, problems, 50, 780/1.Africa, manufacturing industries, book,

50, 403/1.Age-hardening,

elementary description, 50, 007/1. precipitation, 50, 159.-1, 738.1 ; illustrated

by photomicrographs, 50, 727/1. recent work, 50, 12/1. theory, reviow, 50, 159/1. x-ray study, 50, 727/1.

Age-hardening of—Aluminium alloys, 50, 485.4 ; influence

of stretching after quenching, 50, 10/1, 728A ; of high purity, 48, 197 (P a p er ) ; recent progress, 50, 1/1; X-ray study, 50, 727/1.

Britannia metal, X -ray study, 50, 727/1. Cobalt-tungstsn alloys, 50, 001.4. Duralumin, 48, 200; 50, 347.4; at

room temp., X-ray study, 50, 362.4 ; oftect of cold-rolling, 50, 424/1 ;effect of magnetic treatment, 50, 000/1; effect of stretching after quenching, 50, 10A , 728/1.

Gold-platinum alloys by small oddns.of iron, 50, 77/1.

Nickel alloys, 50, 35 M .VOL. L.

Age-hardening of—Steels, effect of magnetic treatmont, 50,

660/1.Zinc-aluminium alloys o f compn.

Al2Zn3, 50, 727/1, 728/1.Air, susponded matter in, 48, 128, 137.Aircraft,

all-metal, advantages of light metals, 50, 181.-1.

bracing cables with different end- connoctions, corrosion-resistance, 50, 742/1.

deformation, optico-pliotographic measurement, 50, 753/i.

engines, selection of alloys for, 50, 693/1. floats. Duralumin, construction, 50,

254/1.fuselages, Duralumin, construction, 50,

254/1 ; monocoque, bonding tests, 50, 254A .

materials, work of 1st Internat. Congress on Aerial Safety, 50, 279/1.

metal-clad, 50, 764/1. metal construction, book, 50, 405/1. metal-truss wing spars, 50, 138/1, 256.4. parts, finishing, 50, 742/1; prodn.

from point of view of safety, 50, 256.4 ; protection against corrosion, 50, 234.4, 439/1; riveting, 50, 765.4.

pistons, defects, 50, 496/1. spars. Duralumin, construction, 50,

254A .structural members, dynamic testing,

50, 753.4. tubes, joining, 50, 696/1. welding. See Welding.

Alclad, corrosion, 49, 147. description, 49, 145; 50, 180/1. sheets, curved, Btrength in shoer, 50,

728.4.use in motal-elad airships, 50, 103/1.

Aldrey,endurance bending strength of hard-

drawn wires, 50, 289/1. free-transmission cables, influonco of

corona phenomena, 50, 102/1. tensile properties of rods at low temps.,

50, 431/1.transmission lines, 50, 687/1 ; overhead,

suitability, 50, 320/1; tensile proporties of wires, 50, 657.4 ; with tension up to 60,000 v., data, 50, 088/1.

wire, bending capacity, 50, 431/1;elect, conductivity, effect of mecb.

4 d

786 Subject IndexAldrey,

and thermal treatment, 50, 294-4 ; tensile strength, effect of mech. and thermal treatment, 50, 294/1 ; transmission, tonsile properties, 50, 057/1; use for transmission linos, 50, 375/1.

Al-Dur-Bra (see also Aluminium-brass), 50, 350/1.

composition, 50, 152/1.Alfol, 50, 319/1, 454/1, 0394, 6884, 689/1.Alitieren process, 50, 2344.Alkali metal amalgams, liquid, elect,

conductivity, 50, 733/1.Alkali metals (seo also under names of

alkali metals), films, on silver, photoolect. effect, 50,

214/1; vectorial photoolect. effect, 50, 214/1.

physical properties, 50, 214/1. reaction products on graphite, structure,

50, 616/1.Alkaline earth metals. Seo under names

of alkaline earth metals.Alkalis, periodic dissoln. o f metals, 50,

83/1.Allautal,

forming, 50, 3484. joining, 50, 3484. machining, 50, 3484. mechanical properties, 50, 3484. properties, 50, 3484.

Allegheny metal,corrosion by iodine, 50, 3034 ; by milk,

50, 3024.Al-lite, 50, 1824.Allotropy of—

Beryllium, 49, 386.Cobalt, 50, 2104, 6154.Lead, 50, 2114 , 3394.Thallium, 50, 6154.Tin (white), 50, 2134.

Alloys (see also Eutectics, Solid solutions, Bearing alleys. B rass, Bronze, Qun- metal, Solders, &c., undor tradenames and under names of individual metals),

analysis. See A nalysis. binary, interatomic forces, quant,

dotn. from thermodynamic data, 50, 737/1 ; thermodynamic activities, 50, 543/1; with continuous ranges of solid solns., phase equilibria, 50, 3534.

cable sheath, telephone, fatigue, pamphlot, 50, 5274.

cast, macrostructure, offect of turbulenco due to gases, 50, 3524.

castability, 50, 3294, 708/1. cathodic disintegration, 50, 3544. chemistry, 50, 3524, 5524, 7364. constitution, X -ray study, 50, 364. containing transition elements, crystal

structuro and atomic proj>erties, 50, 745/1.

coring, 50, 1594, 4324. corrosion. See Corrosion. corrosion-resistant. Seo Corrosion-

resistant materials. deposition. See Deposition. dilatometric analysis, 50, 5424. electrolysis o f molten and solid, 50, 6654.

Alloys,electromotive force, variations, in forma

tion by wot method, 50, 4944. electron-emitting, 50, 79/1. equilibrium diagrams. Sco Equilibrium

diagrams. eutectic. Sco E utectics. ferromagnetic, book, 50, 5264. for electric furnace, report of A.S.T.M.

ctteo., 50, 3234. for electrical heating elements, report

of A.S.T.M. cttee., 50, 323/1, 6934. for electrical resistances, A.S.T.M. ten

tative mothod of test for detg. temp, resistanco const., 50, 91/1, 3134; for high temp, service, 50, 6064; report of A.S.T.M. ctteo., 50, 3234, 6934.

fusible. Seo Fusible alloys. heat-resistant. Seo Heat-resistant

materials.hard, for drilling, investigation, 50,

7344 ; for drilling, prodn., 50, 7354 ; manuf. and appns., book, 50, 5274.

improvement of properties and treatment, progress, 50, 348/1.

intermetallic compounds. Seo Inter- metallic compounds.

intermetallic phases, structure analogies, 50, 4774.

Japanese, artificial corrosion, 50, 7684. light. See Alum inium alloys, and under

names of the light alloys, &c. low-temperature treatment, 50, 3534. magnetic, book, 50, 6514. magnetic moments, method o f dis

cussion, 50, 665/1. mixed phases, theory, 50, 384. overvoltage, hydrogen, 50, 4954. patentability, 50, 2774. resistance limits, dependence on crystal-

lographic orientation, 50, 6074;existence in solid solns. with irregular atomic distribution, 50, 6074.

segregate structures, theory o f formation, 50, 4784.

solid solubility, is a change a liability or an assot ?, 50, 5434.

solid solution. See Solid solutions. superconductivity, 50, 6074. ternary, electrolysis, 50, 804. thermal changes, rapid mothod of in

vestigation, 50, 2284. ultra-light. Seo Dowmetal, Elektron ,

M agnesium alloys, &c.Alpaka, 50, 7804.

treatment, 50, 1204.Alpax (Silumin) (seo also A lum in ium -

silicon alloys, &c.), action of superheated steam, 48,-187. casting, 50, 3304. castings, porosity, 50, 607/1.“ catalogue,” 50, 7274. chemical properties, 50, 2234, 5674. chromium-plating, 50, 4494. corrosion, 50, 4794 ; by acid and al

kaline solns., 50, 24/1; protective action of sodium silicato, 50, 4334 ; tables o f rate of attack, 50, 2944.

corrosion-fatigue, 50, 424.

Subject Index 787Alpax (Silumin),

corrosion-resistance, effect of copper, 50, 3474.

density, effect of copper, 50, 3474. effect of copper, 50, 3474. elastic properties, offect of temp., 48, 255. endurance, 50, 285/1. hardness, effect of copper, 50, 3474;

offect of porosity, 50, 6074. machining, 50, 5754. mechanical properties, 50, 5674. physical properties, 50, 2234. properties, 50, 2944. sawing, 50, 1184.tensile properties, offect of copper, 50,

3474.uses, 50, 2944, 5 6 7 4 ; in mines, 50,

5664 ; in shipbuilding, 50, 3754. workshop practice, recommendations,

50, 2234.Alsimin, 50* 7614.Alufont,

endurance, 50, 2854. sand-castings, stress-olongation, stress-

bending, and stress-slip diagr., 50, 7264 ; vibration strength, 50, 7264.

use in elect, railway engines, 50, 1044. Alulot, 50, 2574.Alumaweld, 50, 3834, 6954.Alumbro (see also Aluminium~brass)t

condenser tubes, 50, 3774.Alumilite process, 50, 2624, 5514. Alumina,

electrolysis, appn. of chiolite, 50, 3174. pamphlet, 50, 4594.

Aluminium, absorption of hydrogen, 50, 7214. absorption of nitrogen, 50, 7214. action of beer, 50, 6094. action of coffee, 50, 7404. action of inorganic and organic sub

stances used in chem. and food industries, 50, 824.

action of natural gas, 50, 1024. action of oil, 50, 1024. action of superheated steam, 48, 187. action of tea, 50, 7404. analysis, standard methods (Al. Res.

Inst.), 50, 7494, 7814. annealing, book, 50, 6534 (review);

of conductors, 50, 654. annealing furnaces, elect., 50, 3924,

58 34 ; gas-fired, 50, 77 64 ; Siemens- Schuckert, 50, 1854.

anodic layers, study, 50, 1004, 6844. anodic oxidation, 50, 2344, 3594, 4814 ;

Alumilite process, 50, 2624, 5514; review of literature, 50, 6694 ; review of patent literature, 50, 3054.

anodic polarization, chem. nature of oxido layers, 50, 2894.

anodically oxidized, uso in electro technics and auto-construction, 50, 504.

atomic heat, 50, 2164. automobile bodies, finishing, 50, 3294. bending, 50, 5744, 5754. bodywork of commercial vehicles, 50,

6864. boilers, 50, 3234.books, 50, 4574, 5264, 7154, 7834.

Aluminium, brewery vessels, 50, 5664; corrosion,

50, 2 7 4 ; corrosion by electriccurrents, 50, 2 2 8 4 ; corrosion of armatures on, 50, 4794 ; in Germany, 50, 2534 ; insulation and embedding, 50, 2 5 3 4 ; protection by Eloxal process, 50, 6694.

busbars, pamphlet, 50, 7 8 1 4 ; resistance to power arcs, 50, 4964.

cables, manuf., 50, 5034. cadmium-plating for protection, 50,

6694.cans for foodstuffs, soldering, 50, 3204 ;

for packing fish, &c., 50, 6854. castability, 50, 3294, 3894. casting, avoidance of porosity, 50,

5074 ; of roiling billets, 50, 5804 ; of shoo lasts, 50, 3304 ; of strip for rolling, 50, 1954; precautions, 50, 5074 ; removal of gasos, 50, 5074.

castings, manuf., 50, 7714 ; radiology, 50, 6274.

cathodic sputtering in helium, 50, 6574. characteristic frequency, 50, 714. chemical properties, 50, 2894. chromium-plating, 50, 964, 1774,

4494, 5634, 6 8 1 4 ; Perma-Chrome process, 50, 4924.

coatings for protection of iron against oxidation at high temps., 50, 5514.

cold-rolling, preferred orientation produced by, 50, 1644.

cold-working, offect on phys. properties, 50, 3374.

collapsible tubes, corrosion by soap, inhibition, 50, 5504.

coloured finishes, 50, 844. colouring, 50, 1204, 2624 , 3604;

Alumilite process, 50, 2 6 2 4 ; by plating, dyeing, and oxidizing, 50, 5774 ; Metso, 50, 7064 ; of foils, 50, 1924 ; Sheppard process, 50, 5774.

compression fluidity, 48, 48, 56. conductors, causes of unsatisfactory

operation and corrosion, 50, 3 2 0 4 ; steel-corod, seo Aluminiutn , steel- cored conductors.

cooking utensils, effect of foods, <fcc., 50, 4534.

copper-plated. Soo CupcU. corrosion, 50, 4794 ; accelerated tests,

50, 3544 ; by acids and bases, 50, 2 4 4 ; by alkaline solns., 50, 244, 4 3 6 4 ; by chlorido of sulphur, 50, 354/1; by distilled water and salt solns., prevention by addn. of sodium dicliromate, 50, 3 5 8 4 ; by hotvapours of cracked petrol, 50, 2304 ; by hydrogen peroxide solns., 50, 4 3 3 4 ; by inorganic and organic substances used m chem. and food industries, 50, 8 2 4 ; by liquid fuels, 50, 7374 ; by milk, 50, 3024, 6664 ; by sea-water, 48, 109; effect ofcontact with other metals, 50, 2294 ; effect of foreign metals on rate of dissoln., 50, 7404 ; factors affecting, 50, 5434 ; in Duffek’s apparatus, 50, 2294 ; local, of hard-rolled sheet, 50,

788 Subject IndexAluminium,

741/1 ; of brewery vessels, 50, 274,066.4 ; of brewery vossols by electric currents, 50, 2284 ; of breweryvessels, detection and measurement of elect, curronts, 50, 666/1 ; of collapsible tubes by soap, inhibition, 50, 550/1 ; of kettles by linseed oil, 50, 82.4 ; of oil-lease tanks, 50, 300/1 ; protective action of sodium silicate, 50, 432/1, 433/1.

corrosion-fatigue, 50, 300/1. corrosion-resistance, methods of detn.,

50, 24/1 ; in oil industry, 50, 434-4. crankcases, machining, 50, 575/1. crystals, plasticity, dependence on temp.,

50, 529/1. deep-drawing, 50, 56/1, 574/1. deformation process, relation to re-

crystn. process, 50, 614/1. deformation structures, 48, 332. degassiflcation, 49, 301. deoxidation, 50, 194-4, 708/1. deposition, electro-, 50, 234-4, 246/1,

305/1 ; on iron, 50, 234/1. deposits, resistanco to corrosion and

high temps., 50, 305-4. detection, Dy Aluminon, 50, 309/1 ;

qual., 50, 618/1. die-casting utensil spouts by slush

process, 50, 123/1. die-castings, design, 50, 774/1 ; proper

ties, 50, 6864. dissolution by acids, book, 50, 283/1. electrical conductivity, 50, 10/1, 425/1 ;

effect of iron, 50, 66/1 ; effect of vanadium, 50, 472/1 ; increase by thermal treatment, 50, 654 ; of conductors, effect of annealing, 50, 65/4 ; of wire, effect of moch. and thermal treatment, 50, 294/1, 417/1.

electrical resistance, change undor hydrostatic pressure, 50, 422/1 ; effect of cold-work, 50, 337/4.

electrolytic oxidation, Eloxal process, 50, 30.4, 567/1.

electrolytic production, 50, 246-4, 317-4, 635/1.

electrothermic preparation, 50, 761/1. embossing, 50, 574/1. endurance bending strength of hard-

drawn wires, 50, 289/1, 657-4. Erichsen value, effect o f rolling, 50,

69/1.estimation, formation o f lithium

aluminate, 50, 240/1 ; gravimetric, by cyanate method, 50, 88/1 ; vol., 50, 2404.

estimation of silicon, 50, 443.4, 554/1, 555/1.

estimation of sodium, 50, 675.1, 676/1 ;spectrographic, 50, 676.4.

etching reagents, 50, 679/1. exhibition at Milan, 50, 638.4. extraction from clays of Bobrikow Beds

(U.S.S.R.), book, 50, 651.1. extrusion, 50, 703.1 ; of electrolytic

conductors, 50, 703.1. fatigue, 50, 530-4.fatigue strength, increasing, 50, 216/1.

Aluminium, films, photoeloct. properties, 50, 454/1. fluidity, pressure of, 48, 53. fluxes, 50, 263/1.foil, Alfol, 50, 319.1, 454.4, 639.1, 688/1,

689/1 ; as covering for hard paper or pasteboard milk bottles, 50, 689.4; as packing material, 50, 496/1;colouring, 50, 192.4 ; compared with lead and tin, 50, 3194 ; for cheoso wrapping, relative advantages of tin and, 50, 666/1; for clieeso wrapping, requirements, 50, 373/1 ; for packing, 50, 254.4 ; hard soldering, 50, 324/1; tape, uso on rubbor-insulatod wires, 50, 319/1; thermal insulating properties, 50, 209-4 ; thermal insulation by means of, 50, 182/1, 319-4, 454.4, 639/1 (see also A lfo l) ; uses, 50, 319/1; uses for oil tank roofing, 50, 373/4.

forgings, radiology, 50, 627/1. forming, 50, 503/1, 574A . foundry data, book, 50, 333/1. free-transmission cables, influence of

corona phenomena, 50, 102/1. furniture, 50, 3204, 688/1. gases in, detection, 50, 209/1, 417/1,

657/1; romoval, 50, 209/1, 417/1,657.4.

hammering, 50, 574/1. hardening by hammering, 50, 110/1. hardness, chango caused by bending,

50, 659/1; effect of rolling, 50, 69/1 ; increaso by heavy cold-working, 48, 52.

heat radiation, increaso by surface treatment, 50, 593/4.

heat-transfer to, in annealing furnaces, 50, 456/1.

heat-treatment, 50, 382/1, 6 9 4 4 ; book, 50, 653/1 (review ) ; by immersion process, 50, 382/1, 499/1.

hose-pipe, flexible, 50, 454/1. hot-water bottles, prodn., 50, 574A . indentation fluidity, 48, 49. industry, Canadian, 50, 276A ; German,

laboratories, 50, 519/1, ingots for rolling, pouring practice,

50, 194/1. inks, 50, 454A ; manuf., 50, 689/1. interaction of water vapour and, 48, 187

(Paper).international competition, abstracts of

entries, pamphlet, 50, 333/1 ; for development of use, results for 1931, 50, 453/1.

Italian, properties, 50, 593/1. kiln doors for timber drying, 50, 688.4. lacquering, 50, 263/1. lattice parameters, 50, 362/1.Lorenz number, 50, 10.4. machining, 50, 5 7 5 4 ; o f crankcases,

50, 5 7 5 4 ; o f cylinder blocks and gear boxes, 50, 3884, 704.4; with tungsten carbide tools, 50, 576/1.

mechanical properties, effect of strain- hardening, 50, 3374.

melting, comparison of graphite and cast-iron crucibles, 50, 5064 ; fluxes, 50, 2 6 3 4 ; in elect, furnace, data,

Subject Index 789Aluminium,

50, 12 44 ; of scrap, soo Alum inium , remelting ; precautions, 50, 5074.

melting furnaces, oloct., 50, 1974, 3924, 3934 ; stationary-hoarth, 50, 7764.

metallurgy, development in past 10 years, 50, 2764.

milling of cylinder block, 50, 7044. mineral resources of U.S.A., 50, 1354. nickel-plating, 50, 474, 2484, 2624,

4504, 5654, 6334, 7594. oxide films, interference colours, in

tensification, 50, 3574. oxides in, detection and removal, 50,

2094, 4174, 6574. paint, advantages, appn. and properties,

50, 3744 ; choice of binder, 50, 1824 ; experiments in Italian Navy, 50, 6894 ; for protection of piping in collieries, 50, 6894 ; manuf., 50, 1824, 6404 , 6 8 9 4 ; “ Permito Resalum,”50, 6894 ; primers, 50, 6894 ; radiation coeff., 50, 3194; reflecting power, 50, 2094 ; use on creosoted wood, 50, 1034 ; uses, 50, 1824, 6404 ; with liquid rubber vehicle, 50, 3744.

permeability to X-rays, 50, 6804. petrol transport tanks, 50, 3734. photoelectric properties of films, 50,4544. physical properties, 50, 2894 ; effect

of cold-work, 50, 3374. pickling soins., 50, 6794. pirns for textile purposes, 50, 3194. pistons. See Alum inium alloys. plating on, 50, 844 , 4514 , 4934, 7604 ;

from cyanide soins., 50, 2494. polishing, 50, 5784. pouring o f ingots for rolling, 50, 1944. powdered and granulated, booklot, 50,

4574. pressing, 50, 5744.protection, 50, 294, 3604 ; against sea

water, 50, 3044 ; by anodic oxidation, 50, 2344, 3054, 3594, 4814, 5514, 6694 ; Eloxal method, 50, 304, 5674 ; from oxidation, 50, 3604 ; Jirotka process, 50,1784 ; M.B.V. process, 50, 4384, 4814, 7424.

protective coatings, colouring, 50, 844, 1924.

protective films, electrolytic production, 50, 294.

recrystallization of sheet, 50, 5294. recrystallization texture, relation to de

formation process, 50, 6144. rectifying cell, characteristic curves, 50,

664.refining, eloctro-, 50, 4514. reflectors for minors’ electric cap lamps,

50, 6864.remelting, fluxes, 50, 2634 ; of scrap

and waste, 50, 2644 ; o f turnings, 50, 2634.

research, practical effects, 50, 2244 ; programme of Aluminum Co. of America, 50, 2764.

rigidity, modulus, change duo to cold- working, 50, 2164 ; temp, coeff., 50, 824, 1584.

Aluminium, riveting, countersunk, 50, 3834. rivets, manuf., difficulties because of

largo grain-size, 50, 4394. rolling, adjustment of rolls by hand

polishing, 50, 1904 ; offect on Erich - son valuo and liardnoss, 50, 6 9 4 ; finish-, o f slieot, 50, 7 0 14 ; hot-, metal lubrication and roll cooling, 50, 1904, 3274 ; hot broak-down operation, 50, 5 5 4 ; hot-mills for sheet, 50, 1174 ; of sheet, 50, 3864 ; planning mill practice, 50, 1904.

rolling mills, dressing of rolls by hand grinding, 50, 3274.

rolling texture, relation to deep drawing properties and hardness, 50, 694.

roofing, 50, 6394, 6884. sampling, standard mothods (Al, Res.

Inst.), 50, 7494, 7814. sawing, 50, 1184.scrap and waste, sampling, 50, 6184 ;

book, 50, 634 (review ); recovery, 50, 1954; remelting, 50, 2634,2644.

screw caps for bottles, 50, 374/1. screw machine products, 50, 3204, seals for bottles, 50, 3744. secondary, book, 50, 634 (review). sections in architecture, booklet, 50,

5254.separation from manganese and zinc,

50, 884 ; of beryllium by guanidine carbonate, 50, 4414.

sheet, as packing material, 50, 4964 ; finish rolling, 50, 7014 ; forming, 50, 7034 ; preferred orientation produced by cold-rolling, 50, 1644 ; prodn., hot broak-down operation, 50, 554 ; radiation cooff., 50, 3194 ; rocrystn., 50, 5294 ; rolling, 50, 3864 ; welding, 50, 1114.

shoe lasts, moulding and casting, 50, 3304.

single-crystals, behaviour under alternating torsional stresses in slow stream of tap-water, 50, 3004 ; (bent wires), retardation of recrystallization power by bending back, 50, 14 ; compressed plates, arrangement of micro-crystals, 50, 3074, 6154 ; preparation, 50, 1 4 ; rocrystn., 50, 61 44 ; sclcro- metric hardness, decrease due to adsorption o f active substances at surface o f contact, 50, 54.

soldering, 50, 2574, 69 54 ; with Alulot solders, 50, 2574.

spinning, 50, 5744. spraying, appns., 50, 2354. steel-cored conductors, 50, 3754 ; book,

50, 3334 ; in Italy, 50, 6874 , 6884 : suitability, 50, 3204 ; used in 132,000 v. line of St. John River Power Co., Grand Falls to Dalhousie, N.B., 50, 1814.

steel versus, 50, 6014. strain-hardening, effect on mech. pro

perties, 50, 3374. strip for rolling, casting, 50, 1954, surface-treatment, 50, 844.

790 Subject IndexAluminium,

tank cars for liquid fuel, 50, 254/1. 319/1; for rail and road transport, 50, 453/1.

tanks for storage and transport of liquid foodstuffs, 50, 496/1.

tapping, 50, 118/1, 7044. tensile properties, effect of iron, 50, 664 ;

of conductors, effect of annoaling, 50, 654 ; o f rods at low temps., 50, 4314 ; o f transmission cables, cffect of short circuit currents, 50, 654 ; o f wire, effect o f moch. and thormal treatment, 50, 2944, 4174.

thermal conductivity, 50, 104, 425/1;at high temps., 50, 44 .

thermal expansion, effoct o f added elements, 50, 764.

thermal insulating properties, 50, 209/1 (see also Alum inium fo il).

Thermit mixture in briquetto form, 50, 1034 , 4544.

toxicity, 50, 453/1, 566/1, 762/1 ; bibliography, 50, 2764 ; critical examination o f evidenco, 50, 7624, 7 8 1 4 ; review of literature, 50, 276/1.

transmission lines in Italy, 50, 6884 ; overhead, causes o f unsatisfactory operation and corrosion, 50, 3 2 0 4 ; overhead# suitability, 50, 3204 ;tensile properties, 50, 657/1 ; tensile strength, effect of short circuit currents, 50, 654 ; with tension up to 60,000 w , data, 50, 6884.

tubes, bending, 50, 7034 ; Progas, 50, 6854.

turnings, romelting, 50, 2634. uses, 50, 5664, 6854, 762/1; for in

sertion in beer syphons, suitability, 50, 5664 ; for large indust, vessels, 50, 2544 ; for oil-Ioaso tanks, field tests, 50, 6864 ; for oil-loase tanks : lab. tests, 50, 1384 , 3 0 04 ; for oil tanks, 50, 1024; for Swiss postal handcarts, 50, 1794 ; in aircraft, 50, 51/1 ; in Amer. automobile industry, 50, 3 1 9 4 ; in architecture, 50, 1024, 320/1, 6394, 688/1; in automobiles, 50, 10 24 ; 3 7 44 ; in brewory, 50, 566/1 ; in chcm. apparatus, 50, 824, 834 ; in chem. industry, 50, 300/1; in construction o f strong current condensers, 50, 1024; in elect, industry, 50, 1024, 1814, 638/1 ; in jewellery, 50, 4 5 4 4 ; in leatherindustry, 50, 3734, 6 8 54 ; in marine construction, 50, 180/1; in motorcycle industry, 50, 3 7 4 4 ; in oil industry, 50, 3204 ; in rail and tram cars and omnibuses, 50, 4 9 6 4 ; in railway rolling stock, 50, 319/1; in rayon industry, 50, 7634 ; in rubber industry, painphlot, 50, 280/1 ; in shopfitting, booklot, 50, 457/1 ; in switchgear, 50, 3204 ; in textile machines and equipment, 50, 6854 ; interna t. competition for development, results for 1931, 50, 453/1 ; in tramway rolling stock, 50, 3194, 374-4; in transportation industry,

Aluminium,50, 7634 ; in truck bodies, 50, 7634 ; in wireless apparatus construction, 50, 373 4 , 5 67 4 , 687 4 .

varnish plant, 50, 254/1. washing m achines and ironers, mould

ing, 50, 1254. welding, 50, 500/1, 6964 ; autogonous,

50, 5 3 4 , 2 5 7 4 ; elect., 50, 5 0 1 4 ; elect., recommonded practice of Aluminum Co. of America, 50, 1864 ; electric, with carbon eloctrodes, 50, 3 2 6 4 ; elect, arc, 50, 500/1, 6964, 7 6 5 4 ; elect, resistance, 50, 1 11 4 ; fluxes, 50, 3 244 ; fluxes, compn., properties and appn., 50, 1864 ; gas-fusion, 50, 1 1 1 4 ; in U.S.A., 50, 54/1 ; of aeroplane tanks, oxy- acetyleno, 50, 1 1 2 4 ; of aluminium- lined vossels, 50, 5 00 4 ; of brewery plant, oxy-acetyleno, 50, 697/1 ; of furniture, 50, 6974 ; of jugs, oxy- acetylono, 50, 5 00 4 ; of oil stomgo tanks and apparatus, 50, 18 6 4 ;of pipes, 50, 383/1 ; of roofing gutters, &c., 50, 500 /1 ; of sheet, 50, 1 1 1 4 ; of sheet by carbon arc, 50, 5004 ; o f tank trucks, 50, 500/1, 7654 ; oxy-acetyleno, 50, 1114 ; oxy-acetyleno, practical hints, 50, 1874 ; ropairs by, 50, 7664 ; spot-, 50, 7654.

welds, corrosion-resistance and strength, 50, 111/1.

wire, arrangement of micro-crystals, effect of direction of drawing, 50, 7014 ; bending capacity, 50, 4314 ; elastic oxtension under longitudina stress, 50, 70/1 ; elect, conductivity, effect of mech. and thermal treatment, 50, 2944, 4174 ; insulated, use in elect, transmission, 50, 688/1 ; largo grain-size, 50, 4394 ; tensile properties, effoct of mech. and thermal treatment, 50, 2944 , 4174 ; tension-olongation diagr. betwoen 20° and 300° C., 50, 6004 ; vibration strength between 20° and 300° C., 50, 6004.

wire mesh, uses, 50, 3194. work racks, 50, 4544. zinc-plating, for protection, 50, 669/1.

Aluminium alloys (see also Alclad, A ld rey , Allautal, A lp a x , A lufont, Anticorodul, Avialile, Avional, Birmabright, B ohn - alite, Chlumin, Coiutructal, Duralite, Duralplat, Duralum in , Eutectal, Hibbo, H iduminium , Koltchougalumin, K .S .- Seeicasser, Lautal, L o -E x , M V C , Nierai, Silberit, Silum in , Skleroti, Telektal, Ultralumin, and under names of constituent motals),

age-hardenable, reviow of developments, 50, 7274.

age-hardening, 50, 4854 ; influonce of stretching after quenching, 50, 104, 7284 ; of high-purity, 48, 197 (P aper); recont progress, 50, 14 ; X-ray study, 50, 7274.

aircraft monocoque fuselage construction, bonding tests, 50, 2544.

Subject Index 791Aluminium alloys,

aluminium-coating o f sheet, 50, 4724. aluminium pigmented surface coatings,

advantages of oxido films as bases, 50, 1334, 2304, 4814.

analysis, standard methods (Al. Res.Inst.), 50, 7494, 7814.

annealing, book, 50, 6534 (review). anodic oxidation, 50, 1624, 2344 ;

review of literature, 50, 6694.A.P. 33, properties, 50, 4254. as bearings, 50, 6854.AW 15, properties, 50, 3464. bending, 50, 5744, 5754. blanking properties, 50, 2944. book, 50, 5264.cast, proposed revisions of A.S.T.M. ten

tative standards, 50, 3214 ; report of A.S.T.M. etteo., 50, 3214, 4954.

castability, 50, 3894. casting, 50, 1024, 1244, 294/1 ; effect

o f pouring temp., method of cooling and dissolved gas, 50, 1954 , 5804 ; of mincing machines in chill moulds, 50, 3304 ; of pistons, 50, 1254 ; of pots and kettles, 50, 1254 ; recommended foundry practice, 50, 3304.

Castings, decorative, patterns and moulds, 50, 1284 ; heat-treatment, 50, 2244 ; manuf., 50, 7714 ; radiology, 50, 6274.

cementation, 50, 1624. centrifugal blower casings, manuf., 50,

1254. chain hoist, 50, 1824. chill-castings, high-quality, prepared

from secondary or virgin metals, properties, 50, 5064.

chromium-plating, 50, 454, 1774 , 4494. coinage, 50, 5344. colouring, 50, 1204, compositions, 50, 2944. corrosion, 50, 2294, 4794 ; accelerated

tests, 50, 3544 ; atmospheric, 50, 1604 ; by hydrogon peroxide soins., 50, 4334 ; by potential differences, prevention, 50, 3574 ; by sea-water, 50, 1604 ; effect of contact with other metals, 50, 2294 ; influence of internal stress, 48, 184; test mothods adopted by members of Aluminium Association, 50, 824.

corrosion-fatigue, influence o f chem. compn. and heat-treatment on resistance to, 49, 38.

corrosion-resistance, offect of heat- treatment, 50, 3044 ; in oil industry, 50, 4344 ; methods of detn., 50, 24A , 4334.

corrosion-resistant, 50, 2224, 3464. cranes, 50, 1814, 2554. cutting, 50, 4964. cylinder heads, aircraft, 50, 3744. deep-drawing, 50, 5744. density, influonce of treatment with

nitrogen and volatile chlorides, 49, 303.

development, future, 50, 4964. die-castings, A.S.T.M. tentative speci-

Aluminium alloys,fications, 50, 1034, 32 14 ; prepn. for plating, 50, 484 ; properties, 50, 6864.

die-pressing, 50, 4964. dissolution by acids, book, 50, 2834. drawing, 50, 4964. drawing properties, 50, 2944. drilling, small diam. drills, 50, 2604. drop-forging, 50, 574-4.D.V.L. researches on, 50, 3484. effect of antimony, 50, 6614. effect of titanium, 49, 310. electrical conductivity of wire, effect of

mech. and thermal treatment, 50, 2944 , 4174.

embossing, 50, 5744. endurance, book, 50, 2854 (review). estimation of silicon, 50, 4434 , 5544,

5554.etching reagents, 50, 6794. extruded bars, phys. properties, in

fluence of crystal size, 50, 1104. extrusion, 50, 4964. factors of safety, 50, 2244. fatigue, 50, 5304 ; offect of heat-treat

ment, 50, 1104. for casting, recent progress, 50, 14. for die-casting, effect of compn., 50,

3234.for forging, mech. properties, 50, 601/1. for I.C.E. cylinders, tests, 50, 7264. for rolling, developments, 50, 4724;

mech. properties, 50, 6014. for sand-casting, compns., 50, 1244,

3304 ; properties, 50, 1244 , 3304. forging, 50, 1104, 1924; furnaces and

hammers for, 50, 703/1. forgings, radiology, 50, 6274.43, in architecture, 50, 568/1.4S, moch. properties, 50, 5364. forming, 50, 503/1.forming properties, 50, 2 9 44 ; effect of

heat-treatment, 50, 3824. friction resistance, at various temps.,

50, 7264. furniture, 50, 1044.gases in, detection, 50, 2094, 4174,

65 74 ; removal, 50, 2094, 4174, 6574 ; removal by mixtures of nitrogen and volatile chlorides, 49, 301 {Paper).

grinding, 50, 1214, 707/1; of pistons, 50, 5794.

hammering, 50, 5744. hardness, at various temps., 50, 72 64 ;

effect o f heat-treatment, 50, 1104. heat-treatable, properties, 50, 6004. heat-treatment, 50, 1104 , 3824 , 6944;

book, 50, 6534 (review) ; changes due to, dilatometric study, 50, 348/1; effect on forming properties, 50, 3824 ; of aircraft parts, 50, 3824, 4994.

hopper-car bodies, 50, 5664. impact strength, notched-bar, 50, 348/1. international competition for develop

ment of use, results for 1931, 50, 4534. LIV. See Lautal.2L5, density, influence of treatment with

nitrogen and volatile chlorides, 49,

792 Subject IndexAluminium alloys,

.303; tensile properties, influonco of treatment with mixtures of nitrogon and volatile chlorides, 49, 305.

ladders, 50, 2544. low-temperature tests, 50, 0604. machining, 50, 4964, 5754 ; of pistons,

50, 3884 ; with tungsten carbide tools, 50, 5704

mechanical properties, 50, 2944, 4964 ; at elevated temps., 50, 5344 ; criteria for their appn., 50, 3484 ; effect of strain-hardening, 50, 3374.

melting, 50, 1244, 1954; comparison of graphito and cast-iron crucibles, 50, 5 0 6 4 ; in elect, furnace, data, 50, 1244.

metallography, 50, 4854. metallurgy, book, 50, 1414 (review).MG 7, properties, 50, 764, 2234, 2944,

6614.micrographic characteristics, 50, 4854. mincing machines, manuf., 50, 3304. new, 50, 1514. nickel-plating, 50, 474. notch toughness, offect o f temp., 50,

4244.No. 12, effect o f temp, on pliys. and

casting properties, 50, 4244.No. 132. See L o-E x. occlusion of gas, influence of molting

conditions, 50, 7714. oxide in, dotection and romoval, 50,

2094, 4174, 6574. painting, 50, 1624.paints for aircraft structures, investiga-

tion, 50, 4844. permanent mould casting, 50, 7714. physical properties, effect o f hoat-troat-

ment, 50, 1104. pickling solns., 50, 6794. pigmented surface coatings, advantages

of oxide films as bases, 50, 2364. pistons, advantages, 50, 4534 ; aero

engine, 50, 3 7 4 4 ; aero-engine, defects, 50, 4964 ; aero-engine, rolling grooves, 50, 2594, 7 0 4 4 ; casting, 50, 1254, 7 7 14 ; comparative investigations, 50, 4724 ; development, 50, 1814 ; evolution, 50, 1814 ; for Diesel motors, advantages and disadvantages, 50, 3204, 6384 ; grinding, 50, 5794 ; lubrication, 50, 6384 ; relative wear of cast-iron and, 50, 5324 ; requirements, 50, 4534.

plating, 50, 1624, 7604. pots and kettles, casting, 50, 1254. precipitation-hardening illustrated by

photomicrographs, 50, 7274. pressing, 50, 5744. progress, 50, 4004. properties, 50, 2944, 3484. protection, 50, 294, 1624 , 2344 , 3044,

3054 , 6 6 9 4 ; by anodic oxidation, 50, 2344, 3054 ; Cilum process, 50, 1624 ; Eloxal method, 50, 30*4 ; Jirotka process, 50, 17 84 ; M.B.V. process, 50, 4384, 4814, 7424.Schoop metal spray process, 50, 7424 ; Vodal process, 50, 1624,

Aluminium alloys,protective coatings, colouring, 50, 1924 ;

evaluation, 50, 3044. radiology, 50, 6274. research, practical effects, 50, 2244. rolling, 50, 1024, 4964 ; adjustment

o f rolls by hand polishing, 50, 1904 ; hot-, metal lubrication and roll cooling, 50, 1904, 3274.

rolling mills of Aluminium Industrio A .G., 50, 3274.

roofing, 50, 6884.RR, mech. properties, 50, 5354 ; phys.

properties, 50, 5354 ; properties, 50, 3484 ; uses in T.C. enginos, 50, 5354.

R.R.50 alloy, 50, 774 ; heat-treatment, 50, 2244 ; prodn. methods, 50, 3894 ; use in automobilo crankcases, cylinder jackets and hoads, 50, 5324.

R.R.53, heat-treatment, 50, 2244. R.R.66, properties, 50, 6614. rubber coating as protection against

corrosion, 50, 3614. sampling, standard methods (Al. Res.

Inst.), 50, 7494. sand-castings, stross-elongation, stress-


sheet, screw threads in, shearing strengths, 50, 7034 ; tensile testing, effect of length of test-piece, 50, 3484.

spinning, 50, 5744. sprayed coatings on, 50, 1624. stamping, 50, 1924, 5744. strain-hardening, effect on mech. pro

perties, 50, 3374. strength, effect of heat-troatmont, 50,

1104.stress-corrosion cracks, 50, 7384. structural, 50, 4964. surface coatings for protection, 50, 1624. tanks for rail and road transport, 50,

4534.tensile properties, influence of treat

ment with mixtures of nitrogen and volatile chlorides, 49, 305 ; of wire, offect of mech. and thermal treatment, 50, 2 9 4 4 , 4 17 4 .

tensile testing of thin sheet, influence of shape of test spocimen, 50, 6794 .

thermal conductivity, 50, 726 4 . thermal expansion, 50, 7 6 4 , 7264 . transmission lines, high-voltage, operat

ing data, 50, 6 384 ; influonco of corona phenomena, 50, 1024 ; with tension up to 60,000 v., data, 50, 6884 .

tubes for aeroplane fuel supply, 50, 374 4 . uses, 50, 5664 ; in aero motors, 50,

104 4 , 5 67 4 ; in aircraft construction, 50, 1814 , 4 53 4 , 6864 , 6 8 7 4 ; in architecture, 50, 1804 ; in Breda monoplane, 50, 6 384 ; in chain hoist, 50, 1824 ; in chom. apparatus, 50, 8 2 4 ; in elect, industry, 50, 6384 ; in oloct. railway engines, 50, 1044 ; in furniture, 50, 1044 ; in house interior decoration, 50, 1804 ; inleather-dressing and skin-drying factories, 50, 6854 ; in machino tools,

Subject Index 793Aluminium alloys,

50, 375/1 ; in marine construction, 50, 1804 ; in mines, 50, 5664 ; in modorn construction, 50, 4904 ; in motor boats, 50, 4544 ; in motorcycle industry, 50, 374 4 , 7634 ; in omnibus construction, 50, 3194 , 3744 ; in rail and tram cars and omnibuses, 50, 4 96 4 ; in railway rolling stock, 50, 1794, 1804 , 319 4 , 567 4 , 7634 ; in shipbuilding, 50, 374 4 , 3754 ; in tram cars, 50, 1804 ; in transport, 50, 567 4 , 6864 : in travelling cranes, 50, 1 8 1 4 ; in U.S. Airship “ Akron,” 50, G864 ; internat, competition for development, results for 1931, 50. 453 4 .

varnishing, 50, 1624. welding, 50, 4 9 6 4 , 5 00 4 ; autogenous,

50, 2574 ; elect, resistance, 50, 1114 ; oxy-acotylono, 50, 3834 ; oxy-acotyleno, practical hints, 50, 1874 ; procautions, 50, 5 3 4 , 5 44 .

wire, electrical conductivity, effect of moch. and thermal treatment, 50, 294 4 , 4 1 7 4 ; tensile properties,effect of mech. and thermal treatment, 50, 2 94 4 , 417 4 .

wire alloy 3. See Aldrcy. working, 50, 496 4 .wrought, elastic bohaviour, offect of

temp., 48, 255 ; proposed rovision of A.S.T.M. tentative standards, 50, 3214 ; report of A.S.T.M. cttco., 50, 3214, 4954.

“ Y ,” chromium -plating, 50, 4494 ; density, influence of treatment with nitrogen and volatile chlorides, 49, 303 ; olectrical conductivity, 50, 104 ; forging, 50, 11 04 ; heat-treatraent, 50, 1104, 2 2 4 4 ; Loronz number, 50, 104 ; manuf., 50, 5354 ; moch. properties, 50, 5354 ; notch-toughness, effect of temp., 50, 4244 ; phys. properties, 50, 5354 ; prodn. methods, 50, 3894 ; properties, 50, 3484 ; tensile properties, influonco of treatment with mixtures of nitrogon and volatile chlorides, 49, 305 ; thermal conductivity, 50, 104 ; uses in I.C. engines, 50, 5354.

Alum inium -antim ony alloys, constitution, 50, 4244. equilibrium relations, 50, 114.

A lum inium -beryllium alloys, casting, 50, 2944. properties, 50, 2944.

Alum inium -bism uth alloys, constitution, 50, 1514.

Alum inium -brasses (soe also Al-dur-bra, Alumbro, &c.),

casting, improved method, 50, 5384. condenser tubes, 50, 524 , 6904. constitution, 50, 2254, 4264, 4274. mechanical properties, 50, 2964, 5384. n ick el-, evidences of age-hardening, 49,

254.protective film, broakdown, 49, 126. residues, working up, 50, 5194, scrap, uso, 50, 2644,

Aluminium-“ bronzes ” (soe also Copper- aluminium alloys),

bearings, friction and abrasion, 50, 2534.

cast, theory of shrinkage, 50, 134. casting, 50, 1254, 6024 ; precautions,

50, 2644. centrifugal casting, 50, 2674. coinage, 50, 5344. corrosion-resistance, 50, 6024. die-casting, 50, 1234. founding, 50, 7084.grain-size, reduction by addn. of iron,

50, 3494. hardness, 50, 6014. high-quality, manuf., 50, 7304. high-strength, manuf., 50, 1954. melting, 50, 1254.paint, choice of binder, 50, 1824 (see

also Aluminium). special, contg. zinc, silicon, and anti

mony, 50, 3504. specifications, requirements, 50, 6904. stress-endurance curves, 49, 27. tensile properties, 50, 6014. uses, 50, 5684 ; in marine construction,

50, 1834. wear-resistance, 50, 6024.

Aluminium-cadmium alloys, constitution, 50, 1514.

Aluminium-chromium alloys, 50, 2944. casting, 50, 2944. corrosion by soa-water, 50, 6664. properties, 50, 2944.

Aluminium-cobalt alloys, equilibrium diagram, 50, 2244. equilibrium relations, 50, 2214.

Aluminium-copper alloys,age-hardening, 48, 197 ; effect o f iron,

48, 200, 213, 219 ; X -ray examination, 48, 202.

a-solid solution, solidification, 50, 1594.

casting, 50, 294/i ; effect of modifiers, 50, 330/1.

constitution, X -ray study, 50, 344. crystal structure, 50, 344. dynamic strength properties, 50, G004. effect of vanadium, 50, 4724. electrical conductivity, 50, 104. eutectoid, tomporing and annoaling, 50,

2564.improvement, rocont work, 50, 124. inverse segregation, 50, 4714.Lorenz number, 50, 104. modification, 50, 3304. properties, 50, 2944. sand-castings, stress-elongation, stress-

bending, and stross-slip diagr., 50, 7264 ; vibration strength, 50, 7264.

solid solution, supersaturated, kinetics of docompn., 50, 4864.

solution potential, effect of lioat-troatment temp., 50, 3544.

thermal conductivity, 48, 37 ; 50, 104. Widmanstatten structure, 50, 4854. wire, elect, conductivity, effect of moch.

and thermal treatment, 50, 2944 ; tensile strength, effect of mech. and thermal treatment, 50, 2944,

794 Subject IndexAlum inium -copper-m agnesium alloys,

corrosion by three types of corroding media, 50, 480/1.

equilibrium relations, 50, 222A.Alum inium -copper-m agnesium silicide

alloys, equilibrium relations, 50, 222,1.A lum in ium -copper-silicon alloys,

m echanical properties, 50, 222.4, 281/1. physico-chem ical investigation, 50, 661-4. preparation, 50, 222/1, 281.-1. wire, oleet. conductivity, effect o f mech.

and thermal treatment, 50, 294.-1 ; tonsilo strength, effoet of moch. and thermal troatmont, 50, 294A.

A lum in ium -copper-zinc alloys (sco also Aluminium- brasses ),

constitution, 50, 225/1, 420.4, 427.4.A lum in ium -iron alloys, 50, 11.1.

crystal lattice, 50, 308.4, 488.4. oxidation-resistance at high temps., 50,

222.4.superlattice, formation, 50, 362/1.

A lum in ium -iron -chron iium alloys, c o n stitution , 50, 800/1.

A lu m in ium -iron -silicon alloys, aluminium-rich, constitution, 50, i l A , 223.4,

A lum inium -lead alloys, constitution, 50,151.1.

A lum inium -lithium alloys, 50, 425.1.A lum inium -m agnésium alloys,

a-solid solution range, boundary, X-ray detn., 50, 732.4.

boiling point curves, 50, 736.4. casting, 50, 294.1. chem ical properties, 50, 604.4. electrical conductivity, 50, 10.-1. equilibrium diagram, 50, 604.4. heat-treatment, 50, 604.-1.Lorenz number, 50, 10.4. physical properties, 50, 604/1. properties, 50, 294.4. solid solubility o f alum inium at different

temps., 48, 221 (Paper). solid solubility o f magnesium, X-ray

detn., 50, 12.4, 553/1. solid solutions, homogenized, tensile

tests, 50, 732/1. therm al conductivity, 50, 10A.

Alum inium -m agnesium -copper alloys, constitution, 50, 663/4.

Alum inium -m agnesium -m anganese alloys, 4S, mech. properties, 50, 536/1. properties, 50, 151/1.

Alum inium -m agnesium -silicon alloys, A l3M g2, X-ray evidence, 50, 485/1. constitution, 50, 346/1. electrical conductivity, 50, 10/1. equilibrium diagrams, 50, 472.-1.Lorenz number, 50, 10/1.M g2Si, preseneo not confirmed by

X-rays, 50, 485/1. thermal conductivity, 50, 10.4. Widmanstätten structure, 50, 485/1.

Alum inium -m anganese alloys, casting, 50, 294/1. constitution, X-ray study, 50, 33.4. creep, 50, 299/1. properties, 50, 294.4.

A lum inium -nickel alloys, casting, 50, 294.-1.

Alum inium -nickel alloys, properties, 50, 294.-1.

A lu m in ium -n ickel-tin alloys, aluminium- rich, constitution, 50, 347.4.

A lum inium -silicon alloys (seo also Alpax, M VG alloy, Silumin, &c.),

action of superheated steam, 48, 187. casting, 50, 294/1. constitution, 50, 600.4. creep, 50, 299/1. effect o f sodium, 50, 661.4. electrical conductivity, 50, 10/1. electrical resistance, offoct of hoat-troat-

ment, 50, 347/1. eutectic, hypoeutectic and hypereutectic,

50, 600/1.for die-casting, offoct of variation of

temp, on impact value, 50, 477.1. Lorenz number, 50, 10/1. mechanical properties, offoct of hoat-

troatment, 50, 347/1. modification, 50, 294.-1. pistons, 50, 180.4. properties, 50, 294/1. sand-castings, stress-olongation, stress-

bending, and stress-slip diagr., 50, 726/1 ; vibration strength, 50, 726/1.

solid solubility o f silicon, 50, 471/1. thermal conductivity, 50, 10/1. uses, 50, 291.-1 ; in architecture, 50, 180/1.

'Wire, elect, conductivity, effect o f mech. and thermal troatmont, 50, 294/1 ; tensilo strength, effect of moch. and thermal treatment, 50, 29-4-4.

A lum inium -silver alloys, lattice constants, 50, 164.1, 238.4. solid solutions, X -ray study, 50, 164/1,

238.4.A lum inium -zinc alloys,

age-hardening (AI„Zn, compn.), 50,727.4. 728/1.

a -solid solution, solidification, 50, 159/1. A L Z n ,, does it existí, 50, 615 /1 ; im

provement, 50, 472.4. boiling point curves, 50, 736/1. equilibrium relations, 50, 223/1. improvem ent, 50, 472.-1.

Alusil, compn., 50, 600/1.Amalgam s,

A lkali metal, liquid, oleet. conductivity, 50, 733.4.

Barium, electrolysis, 50, 80/1.Bismuth, electrolysis, 50, 80/1.Cadmium, heats of soln., heats o f forma-

tion and freo energies of formation, 50, 12/4 ; metallography, 50, 12^1 ; transport numbers, 50, 353.-1.

Copper, prepn., 50, 663/1.Gold, constitution, 50, 428/1.Iron, 50, 350/1 ; colloidal naturo, 50,

227.4.Lithium, electrolysis, 50, 80/1 ; liquid,

oleet. conductivity, 50, 733/1.Nickel, 50, 350/1.Potassium, electrolysis, 50, 80.4 ; liquid,

oleet. conductivity, 50, 733/1.Sodium, detailed study of formation

from sodium chloride solus., 50,252.4 ; dilute, kinetics of dissolu., 50, 542/1 ; electrolysis, 50, 80.-1 ;

Subject Index 795Amalgams,

liquid, elect, conductivity, 50, 733.4 ; liquid, study of, 50, 663/1.

Tellurium, Hall effect, 50, 227/1. Thallium, freo energies of formation

and heats of formation, 50, 21.4. Titanium, prepn. and properties, 50,

297.4.transport and transport potentials, 50,

3o3/l, 3o4/l. transport numbers o f metals, 50, 80A. Uranium, prepn. and properties, 50,

Vanadium, prepn. and properties, 50,297^1.

Ambrao, com position, 50, 377/1. corrosion by milk, 50, 302/1.

Am bro, composition, 50, 377/1.America. See United Slates o f America.

ANALYSIS, METHODS OF. Analysis,

apparatus, tantalum as material for, 50, 445.1.

books, 50, 139/1, 140.4, 592/1 (review). calculations, book, 50, 136.4. colorim etric, book, 50, 71 C/1, co-precipitation, 50, C19/1. developments, 50, 238/1. electrolytic, easily constructed appar

atus, 50, 40/1 ; now universalstand, 50, 364A ; portable apparatus, 50, 91/1 ; prevention of anodic losses of platinum, 50, 074.4 ; uso of metallic (electronic) rectifiers, 50, 250-4.

electrometric, with pptn. reactions, use of solid electrodes, 50, 87/1.

gravimetric, by means o f thormo- balanco, 50, 241/1.

laboratory apparatus. See Laboratory apparatus.

m etallurgical, book, 50, 051/1. m icro-, books, 50, 525/1, 588/1 ; in

metallurgy, 50, 365/1 ; reviow of methods, 50, 309/1.

m icro-electro-, improvod apparatus, pamphlet, 50, 457/1.

optical instruments for, book, 50,524.4.

potentiom etric, book, 50, 716.4, 718/1. precipitation by H2S, 50, 39/1. Qualitative, books, 50, 62/1, 133.4,

140/1,283/1,407/1,460/4; magnesia apparatus for, 50, 364/1 ; tables, 50, 460/1 ; uso of drop reactions, 50, 366.4 ; use o f organic reagents, 50, 309/1.

quantitative, books, 50, 62.4, 132.4, 138/1, 144/1 (review), 206.4, 526/1, 527/4 ; uso o f organic reagents, 50, 309.1.

rapid, book, 50, 286.4. recent advances, book, 50, 143/1

(review).reducing agent for trivalent iron,

cadmium as, 50, 39/1. rôle in industrial research, 50, 304.1,

525.4.

Analysis, methods of. Analysis,

spectrographic, apparatus, 50, 748/1 ; book, 50, 63/1 : by omission spoc- trum, book, 50, 134.4, 206.4 ; in metallurgy, 50, 018/1 ; instruments for, book, 50, 524/1 ; new spectral lino photometer, 50, 364/1 ; quant., 50, 748.4 ; rapid, 50, 673.4 ; utility, 50, 39/1 ; wavo-length tobies, 50, 63/1.

technical, book, 50, 136.4.vessels, use of chromium-stocl, 50,

87/1.volumetric, book, 50, 135.4 ; pneu

matic apparatus, 50, 488 /1 ; uso o f bromate, 50, 87.4 , 240 /1 .

Analysis of—Alloys, olectrographic, 50, 618.1 ;

quant., by X-ray spoctroscopy, 50, 80-4 ; quant., without destroying samples, 50, 553/1 ; spoctrographic, 50, 487/1 ; spectrographic, uso of now Bpectral lino photometer, 50, 364 /1 .

Aluminium, standard methods (AI. Res. Inst.), 50, 749 .4 , 781/1.

Aluminium alloys, standard methods AI. lies. Inst.), 50, 749 .4 , 781 .4 .

Brasses, 50, 487 /1 , 618.4.Bronzes, 50, 673,4.Cadmium, ra p id , 50, 677/1.Chromium-plating solutions, 50, 630/1,

031/1.Coals, 50, 394 .4 , 395/1.Columbium, spoetroscopic, cathode-

ray method, 50, 240 /1 .Copper, book, 50, 59.1. Copper alloys, 50, 364/1. Copper-zinc alloys, 50, 168.4. Gold, vol., 50, 365.4.Iron, book, 50, 656.4 (review).Lead, book, 50, 59.4.Lead alloys, 50, 076.4.Manganese-brass, tentotivo revisions

of A.S.T.M. standard methods, 50, 240 /1 .

Nickel by Parr-Lindgron method, 50,365.4.

Nickel-plating solutions, 50, 450 /1 .Non-ferrous metals, U.S.S.R. stan

dards, 50, 460 /1 .Plating solutions, 50, 635/1 ; booklet,

50, 718 /1 . Platinum metals and alloys, spectro

scopic, 50, 167.-1. Precious metal alloys, micro-, 50,

365/1. Red brass, 50, 618 .4 .Refractories, 50, 200 .4 , 398 /1 , 516 .4 .Silver alloys (coinage), 50, 166/1.Silver-plating solutions, 50, 40 /1 ,

760 /1 .Silver solders, A.S.T.M. tentative

method, 50, 166/1., 240 /1 .Steels, book, 50, 656/1 (review).Tantalum, spectroscopic, cathode-ray

method, 50, 240/1.White metals, 50, 364.4.Zinc, book, 50, 59/1.

796 Subject IndexAnalysis, methods o f.

Detection o f—Alum inium , b y A lum inon, 50, 3094 ;

qua!., 50, 6184 .Antim ony, 50, 6 734 ; in tin , 50, 618 4 .A rsenic in tin, 50, 6184 .Barium, 50, 365 4 .Bismuth, 50, 8 7 4 .Calcium, 50, 8 7 4 .Chromium, in acid solns., 50, 8 7 4 ;

spectroscopic, 50, 620 4 .Cobalt, 50, 3 6 5 4 ; in presence o f

olom cnts o f Group I I I , 50, 1664.Gold, m icro*, 50, 3654 .Lead, colorim otric, 50, 5 53 4 .L ithium b y flam e coloration , 50,

673 4 .Magnesium, 50, 3664 ; b y coloured

drop reactions, 50, 4 41 4 .M ercury, 50, 5544 ; in m inute am ts.,

oloctrochem ., 50, 4 4 1 4 ; in very small am ts., 50, 4 43 4 .

Metals, 50, 1 6 6 4 ; in presence o f organic acids, 50, 2 3 9 4 ; tetra- m ethyldiam inodiphonylm ethane as reagent, 50, 8 7 4 .

Nickel, spectroscopic, 50, 620 4 .Platinum, m icro-, 50, 365 4 .Silver, 50, 874 ; appn. o f p -d im othyl-

am inobenzylidenerhodam ino, 50, 3 664 ; capillary-chem ical m icro - m ethod, 50, 3664 ; m icro -, 50, 3 65 4 .

Strontium, 50, 8 7 4 , 3 6 6 4 ; b y flame coloration , 50, 673 4 .

Estimation of—Alumina in refractories, 50, 3984 .A lum inium , form ation o f lithium

alum inate, 50, 2404 ; gravim etric, b y cyanate m ethod, 50 , 8 8 4 ; vo l., 50, 240 4 .

A m m onium group metals in presenco o f M n, N i, Co, and M g, appn. o f hexam cthylenetetram ine, 50, 441 4 .

Antim ony, b y L o w ’s m ethod, use o f manganese sulphate, 50, 6 1 9 4 ; in a lloys w ith high copper content, rapid m ethod, 50, 6214 : in lead alloys, rapid m ethod o f dissolving a lloys preparatory to , 50, 6764 ; in presenco o f tin , qual., 50, 8 8 4 ; (small am ts.) in copper and its alloys, 50, 6744 ; (small am ts.) in presenco o f m uch copper, 50, 1674 ; use o f titanium ch loride, 50, 8 8 4 .

Arsenic, in presonce o f antim ony, e lectro lytic, 50, 6 7 5 4 ; in white m etals, rapid, 50, 1674 ; (small am ts.), oloctrochem ., 50, 6 7 4 4 ; (small am ts.), now electrolytic apparatus, 50, 6 7 5 4 ; use ’ o ftitanium ch loride, 50, 8 8 4 .

Barium as chrom ate, 50, 4 88 4 .Beryllium, critical review , 50, 4414 ;

gravim etric, 50, 8 8 4 , 4 4 1 4 , 6 1 9 4 ; gravim etric, b y guanidino ca rbonate, 50, 3 0 9 4 ; in a lloy steels and ferro-beryllium , 50, 4 42 4 .

Bismuth, as m etal, 50, 4424 ; use o f titanium chloride, 50, 8 84 ,

Analysis, methods of.Estim ation of—

Cadmium, gravim etric, 50, 5544 ; in cadm ium cyanide baths, 50, 6754 in copper, 50, 4 88 4 .

Calcium, 50, 4 4 2 4 ; quant., w ith picrolonic acid , 50, 1674.

Chromium, and nickel in same soln., vo l., 50, 1 6 8 4 ; in N i-C r, N i-C r - Fo and N i-C r cast-iron, 50, 5544 ; iodom etric, 50, 1 6 7 4 ; vo l., 50, 4 44 4 .

Cobalt, as sulphide, 50, 3 9 4 ; co lor im otric, alono and in presence o f nickel, 50, 884 ; e lectrolytic, 50, 8 8 4 ; gravim etric, 50, 5544 ; in am m oniacal soln., m icroelectrolytic, 50, 4434 ; quant., b y filtration m othod, 50, 6 2 0 4 ; use o f zinc oxide, 50, 8 84 .

Copper, b y fluoride-iod ide m othod, 50, 4 4 2 4 ; colorim etric, appn. o f piperidinium , 50, 4 4 2 4 ; in am m oniacal soln., m icroelectrolytic, 50, 4 424 ; in cop p er-z in c a lloys, 50, 1 6 8 4 ; in plating solns., 50, 9 9 4 ; in presenco o f iron, with salicylaldoxim e, 50, 4 424 ; in steel, 50, 394 ; m icro-, appn. o f Spacu ’s reaction, 50, 6754 .

Gallium, electrolytic, 50, 4 4 2 4 ;quant., 50, 2 40 4 .

Gases, in m etals, 50, 6 74 4 , 7494 .Gold, potentiom etric, w ith cuprous

chlorido soln ., 50, 6204 ; quant., b y hydrazine hydrochoride, 50, 1684 .

Iridium , 50, 3 0 9 4 ; gravim etric, 50, 7494 .

Iron, by m eans o f basic mercuric brom ate, 50, 2 404 ; (small am ts.) in copper, 50, 675 4 .

Lead, anodic pptn . o f lead peroxide, 50, 8 94 ; o lectrolytic, dotn. o f factor fo r converting w eight o f olectrodepositod lead peroxide into load, 50, 4 4 2 4 ; gravim etric, b y m eans o f therm obalance, 50, 2414 ; in B abb itt, vo l., 50, 1 6 8 4 ; in its com pds. and alloys, quant., b y adsorption m ethod, 50, 5 5 3 4 ;ion , volum otric, b y oxalato m ethod b y analysis o f ppt. or o f soln., 50, 4 884 ; (small am ts.), co lor im etric, 50, 5 534 ; vo l., w ith sodium carbonate, 50, 1684.

Magnesia in refractories, 50, 3984 .Magnesium, technique o f oxinate

pptn ., 50, 2414 .Manganese, as d ioxido, quant., 50,

6 194 ; b ibliography, 50, 1684 ; by K norro ’s m ethod in presenco o f certain other m etals, 50, 1684 ; colorim etric, 50, 8 9 4 ; colorim etric, b y periodate m ethod, new and sim plified colorim eter, 50, 6 2 0 4 ; in bronze, 50, 8 9 4 ; in large am ts., m odification o f silver-salt-persu l- phato m ethod, 50, 894 ; m ethods critically discussed, 50, 1 6 8 4 ;

Subject Index 797Analysis, methods of.

Estimation of—pptn. as M nN H 4P 0 4,H 20 , 50, 8 9 4 , 4434 ; (small am ts.), electro- colorim etric, 50, 5544 ; volum etric, after ox idation b y periodate, 50, 894 ; w ith potassium periodate, 50, 1694 ; use o f zinc oxide, 50, 8 84 .

Mercury, gravim etric, as periodate, 50, 9 0 4 ; in presence o f copper and arsenic, or iron salts, quant., 50, 904 ; in small am ts., 50, 4 434 ; rapid, 50, 6204 ; volum etric, as periodate, 50, 9 0 4 .

Metals, spectrographic, b y spark spec* tra, 50, 3 94 .

Molybdenum b y potassium porm anganate, 50, 4434 ; colorim etric, 50, 3104 .

Nickel and chrom ium in same soln., vo l., 50, 1684 ; as sulphide, 50, 3 94 ; colorim etric, potassium dithio-oxalate m othod, 50, 5544 ; gravim etric, 50, 5 544 ; in am m oniacal soin., m icroelectrolytic, 50, 4434 ; in N i-C r, N i-C r-F e and N i-C r capt-iron, 50, 5544 ; in plating soins, b y M oore’s m ethod, 50, 984 ; in steel, 50, 3 9 4 ; quant., b y filtration m othod , 50, 6204 .

Phosphorus in bronzes, rapid, 50, 5544 .

Platinum, potontiom etric, with cuprous chloride soln., 50, 6204 .

Potassium, b y perrhenium acid, 50, 3 1 0 4 ; gravim etric, together with sodium and m agnesium, 50, 1694 ; in presence o f sodium , perch lorato- chloroplatinato m ethod, 50, 5544 ; rapid, 50, 1694 ; (small am ts.), 50, 1 6 9 4 ; vo l., 50, 2414 .

Rhodium, 50, 3104 ; gravim etric, 50, 749 4 .

Ruthenium, colorim etric, 50, 554 4 .Silica in refractories, 50, 3984 .Silicon, in alum inium and its alloys,

50, 4 4 3 4 , 5 54 4 , 5554 ; in copper— silicon alloys, 50, 1694 .

Silver, in electrolytic copper refinery slimes, appn. o f V olhard m ethod, 50, 2414 ; in lead bullion, vo lu m etric, 50, 3 104 ; in plating soins., 50, 9 9 4 , 6754 ; (small am ts.), colorim etric, 50, 6214 .

Sodium, in alum inium , 50, 6754 , 6764 ; in alum inium, spectrographic, 50, 6764 ; indirect vol., based on reduction and titration o f uranium in m agnesium sodium uranyl acetate, 50, 4444 ; minute amts. b y m agnesium uranyl acetate m ethod, errors involved, 50, 3104 ; oxidim etric, 50, 9 0 4 .

Sulphur, in brass, and bronze, rapid m ethod, 50, 3104 .

Thallium, argentom etric, 50, 5554 ; by hypoiod ito m ethod, 50, 5554 ; vol., 50, 555 4 .

Tin, gravim etric, b y m eans o f thermo -

Analysis, methods of. Estimation of—

balanco, 50, 2414 ; in alloys with high copper content, rapid method, 50, 6214 ; in brasses and bronzes, gravimetric, 50, 2414 ; in ferrotungsten and tungston ores, 50, 6764 ; in lead alloys, rapid method of dissolving alloys, 50, 6764 ; in stool, 50, 904 ; in tin drosses, 50, 1704; in tinplate, 50, 9 0 4 ; in white metals, vol., 50, 904, 4444, 5554.

Titanium, as dioxide by guanidine carbonate in tartrate solns., 50, 3114; as phosphate, 50, 4444; colorimetric, by Weller’s mothod, 50, 6744 ; gravimetric, 50, 555A , 6744; gravimetric, by moans of thermobalance, 50, 2414.

Tungsten, colorimetric, in minute amts., 50, 2424.

Vanadium, colorimetric, with phos- photungstic acid, 50, 5564 ; gravimetric, use of 8-hydroxyquinolino, strychnine and brucine, 50, 3114; vol., 50, 4444.

Zinc coating on steel, apparatus for works, 50, 44 44 ; in alloys,potontiometric, 50, 5564 ; in cadmium, rapid, 50, 6774 ; in copper- zinc alloys, 50, 1684 ; Rinnmann’s green test, 50, 6774 ; (small amts.), in nickel, 50, 6774 ; vol., 50, 5564.

Precipitation, oxinate, 50, 2414.Separation of—

Aluminium from manganese and zinc, 50, 884.

Beryllium, from aluminium by guanidine carbonate, 50, 884 , 44 14 ; from Fe"*f U 02’ *, Th*"\ Zr':*:, T f , Cr04", MoCY', Cu“ , AsOo'", Sb03" !, V 04'" and W 0 4", 50, 3094, 6194.

Caesium, by isoamyl alcohol, 50, 3094.

Calcium from magnesium by sodium tungstate, 50, 4424.

Chromium from iron and nickel, 50, 1674.

Cobalt, 50, 6204.Copper, and lead, electrolytic, 50,

6314 ; from cadmium, use of phenolic acids, 50, 3664; from zinc, 50, 1684; in presence of aluminium by 8-hydroxyquinoline, appn. to aluminium alloys, 50, 6194.

Gallium, 50, 884.Germanium and arsenic, quant., 50,

2404.Iridium, from platinum and other

metals, 50, 3094.Lead, from iron, quant., 50, 1674 ;

from zinc, nickel and manganese by hydrogen sulphide, 50, 6744.

Lithium, by isoamyl alcohol, 50, 3094.Nickel, 50, 6204.Rhodium, from iridium, 50, 7494;

from platinum and other metals, 50, 3104.

798 Subject IndexAnalysis, methods of.

Separation of—•Rubidium , b y isoam yl a lcohol, 50,

3094 .Third analytical group metals, 50,

4444.Tin, from tantalum and niobium ,

50, 3664 ; from zinc, nickcl and manganese b y hydrogen sulphide, 50, 6744 .

Titanium, gravim etric, 50, 5554 ; in a lloys, 50, 6744.

Tungsten carbides WC and WoC, 50, 6764.

Vanadium from arsonic, use o f 8-hydroxyquinoline, strychnino, brucine and quinoline, 50, 6774 ; from chrom ium , 50, 3114 .

Zinc from copper, 50, 1684 .Titration,

direct, internal indicators for, 50, 874. electrometric, prepn. and calibration

o f stick antim ony olectrode, 50, 3184.

potentiometric, book , 50, 1354 ; su ita bility o f electrodes, 50, 364 4 .

Titration of—Tin (divalent) w ith potassium chlorate,

50, 6764 .Uranium, electrom otric, w ith eerie

sulphate, 50, 9 0 4 .Zinc, with potassium ferrocyanide,

50, 2 42 4 , 3114 j w ith potassium ferrocyanide, overlooked source o f error, 50, 242 4 .

Ancient metallurgy, finds in Zim babw e ruins, 50, 5 20 4 .

Annealed metals, pressure o f flu id ity , 48, 47 (Paper).

Annealing (see also Heat-trcatment),bright-, chem . effect o f gaseous a tm o

spheres, 50, 1854 ; w ith hydrocarbon gases, 50, 4 56 4 .

controlled atmospheres, 50, 4564.furnaces. See Furnaces.

Annealing of—A lum inium , book , 50, 6534 (review) ;

conductors, 50, 6 5 4 .A lum inium alloys, b ook , 50, 6534

(review).Brass, bright-, in gas-fired surface-

com bustion furnaces, 50, 7 644 ; strip in continuous furnace, 50, 6944 ; use o f gas, 50, 5 3 4 .

Copper, bright-, 50, 5704 ; bright-, in elect, furnace, 50, 6 9 4 4 ; cold - worked, variation o f dim ensions produced b y , 50, 3234 ; wire,fundam entals, 50, 5 34 .

Duralumin, 50, 7 6 4 4 ; therm al effect, dilatom etric investigation, 50, 727 4 .

Eutectoid alloys, 50, 2564. Monel metal, 50, 194, 5704. Silver-copper-nickel-zinc alloys, 50,

6064.Strip, 50, 5 704 ; in continuous furnaces,

50, 694 4 , 765 4 .Worked (hammered) metals, tim e law

relating to , 50, 1104 .

Annual Autumn Meeting, 49, 13. Annual General Meeting, 48, 1.Anodes, for electrolytic zinc production ,

50, 251 4 .Anodic oxidation of—

Aluminium and its alloys, 50, 4 8 1 4 ; A lum ilito process, 50, 2 6 2 4 , 5 5 1 4 ; review o f literature, 50, 6694 ;roview o f patent literature, 50, 3054 .

Anodic passivation, tim e factor in, 50, 2524 .

Anodic polarization, in aqueous solutions, curront limits, 50, 610 4 .

Anodic polarization of—Alum inium , chem . nature o f oxide

layers, 50, 289 4 .Cadmium in aqueous solns., 50, 6104 . Lead in aquoous solns., 50, 6104 . Tantalum, chem . nature o f ox ide layers,

50, 2894 .Thallium in aqueous solns., 50, 6104 . Titanium, chem . naturo o f oxide layers,

50, 289.1.Zinc in aquoous solns., 50, 610 4 . Zirconium, chem . naturo o f oxide layers,

50, 289 4 .Anticorodal,

contacts, unsuitability , 50, 6874 . elastic hysteresis curves, 50, 3474 . use in elect, railway engines, 50, 1044.

Anti-friction alloys. See Bearing alloys.Antimony,

boiling point a t atm . pressure, 50, 7364 . book, 50, 589 4 . castability, 50, 329 4 . crystal structure o f electrodeposits, effect

o f tem p., 50, 562 4 . crystals, breaking etrongth and cleav-

ability , 50, 529 4 . deposits, crystal structure, effect o f

tem p., 50, 5624 ; X -ra y diffraction stu dy o f structure, 50, 314 4 .

detection, 50, 6734 ; in tin , 50, 6184 . electrical resistance, change under h yd ro

static pressure, 50, 4 2 2 4 . electrode, stick, prepn. and calibration,

50, 318 4 .estimation, b y L ow ’s m ethod, use o f

m anganese sulphate, 50, 6 1 9 4 ; in a lloys w ith high copper content, rapid m ethod , 50, 6 2 1 4 ; in load alloys, rapid m ethod o f dissolving a lloys preparatory to , 50, 6764 ; in presonco o f tin, qual., 50, 884 ; o f small am ts. in copper and its a lloys, 50, 6744 ; o f small amts. in presence o f m uch copper, 50, 1674 ; use o f titanium ch loride, 50, 8 8 4 .

explosive, structure, 50, 5 62 4 . films, registration o f cathode rays, 50,

292 4 .Hall effect in induced currents in circular

discs, 50, 1454 . mineral resources o f U .S .A ., 50, 1384. mirrors, prepn., 50, 1 4 5 4 ; reflective

pow er for in fra-red, 50, 1454. oxidation b y nitric acid , hydrazine as

retarding agent, 50, 1494 . single crystals, sclerom etric hardness,

decroaso duo to adsorption o f active

Subject Index 799Antimony,

substance a t surface o f con tact, 50,5.4.

twinning, 50, 529/1. uses, 50, 375.4.

Antimony alloys (see also Babbitt metal, Bearing alloys, & c.).

Antimony-aluminium alloys, constitution, 50, 4244. equilibrium relations, 50, 114.

Antimony-bismuth alloys, crystal structure, 50, 3494. homogeneous, prepn., 50, 3494.

Antimony-cadmium alloys,CdSb, existence, 50, 3544 ; existenco o f

2 m odifications, 50, 4 40 4 . crystal structure, 50, 4 40 4 . magnetic susceptibility, 50, 3544 .

Antimony-copper alloys, cathodic sputtering, 50, 3544. constitution, 50, 4304.

Antimony-copper-tin alloys, constitution, 50, 6624 .

Antimony-gold alloys, constitution, X -r a v study, 50, 3 5 4 . crystal structure, 50, 3 5 4 .

Antimony-lead alloys, boiling point curves, 50, 7364. magnetic susceptibility, 50, 3544.

Antimony-lead-cadmium alloys, bearing properties, 50, 174 .

Antimony-lead-tin alloys, microstructure, 50, 784. scrap, treatment, 50, 5214.

Antimony-magnesium alloys, boiling point curves, 50, 736 4 .

Antimony-silver alloys, constitution, 50, 4304 : X -r a y study,

50, 3 64 . crystal structure, 50, 3 6 4 .

Antimony-silver-cadmium alloys, con stitution, 50, 4 3 0 4 .

Antimony-silver-copper alloys, constitution , 50, 4 3 0 4 .

Antimony-silver-zinc alloys, constitution, 50, 4304 .

Antimony-sodium alloys, NaSb, lattice structure, 50, 363 4 .

Antimony sulphides, therm ochem istry, 50,

Antimony-thallium alloys, m agnetic susceptibility , 50, 354 4 .

Antimony-tin alloys,£-solid solution, crystal structure, 50,

2 2 4 .constitution, 50, 224.gas-meter valves, die-casting, 50, 2014 .magnetic susceptibility, 50, 354/1.SnSb, existence, 50, 354 4 .

Antimony-zinc alloys, boiling point curves, 50, 736 4 . electrolysis o f solid, 50, C654. magnetic susceptibility, 50, 354 4 .ZnSb, existenco, 50, 3544 .

Apparatus, laboratory. See Laboratory apparatus.

Apple juice, action on Monel m otal, 50, 3034 .

A.P. 33 alloy. See Aluminium alloys.Arc furnaces. See Furnaces.

Arc welding. See Welding.Arcatom process. See Welding. Arcogen process. See Welding.Armco iron (see also Iron),

hardness, effect o f cold-rolling, 50, 6 4 . strengthening on cold-rolling, 50, 6 4 . tensile properties, effect o f cold-rolling,

50, 6 4 .Arsenic,

deposits, X -ra y diffraction study o f structure, 50, 3144.

detection in tin, 50, 6184. estimation, in presence o f antim ony,

electrolytic, 50, 6754 ; in whitemetals, rapid, 50, 1674 ; (smallam ts.), electrochem., 50, 6744 ;(small am ts.), new electrolytic ap paratus, 50, 6754 ; use o f titanium chloride, 50, 884 .

films, registration o f cathode rays, 50, 2924 .

mineral resources o f U .S.A ., pamphlets, 50, 4044 .

oxidation b y nitric acid, hydrazine as retarding agent, 50, 1494.

production, 50, 3754 , 6894. separation from germanium, quant., 50,

2404 .separation of vanadium, uso o f 8-hydr-

oxyquinoline, strychnine, brucine, and quinoline, 50, 6774.

single crystals, sclerometric hardness, decrease due to adsorption o f active substances a t surface o f contact, 50, 5 4 .

uses, 50, 3 75 4 , 6894.Arsenic-nickel-iron alloys, constitution,

50, 2984 . Arsenic-silver alloys,

constitution, X -ra y study, 50, 3 6 4 . crystal structure, 50, 3 64 .

Arsenic sulphides, hydrogen and, thormal equilib., 50,

4314 . thermochemistry, 50, 6614 .

Arsenides—Iridium, prepn., 50, 2 0 4 .Palladium, prepn., 50, 2 04 .Platinum, prepn., 50, 2 04 .Rhodium, prepn., 50, 2 0 4 .Ruthenium, prepn., 50, 2 04 .

Arsine poisoning from waste m etal, 50, 400/1.

Ascaloy,corrosion b y iodine, 50, 3034 ; by m ilk,

50, 3024 . use in glass m achinery, 50, 6934 .

Assay beads, surface effects caused b y platinum metals, 50, 4414 .

Assaying of—Gold bullion, effect o f annealing on sur

charge, 50, 2 384 ; effect o f platinum group motals, 50, 4884 .

Gold alloys, correct sampling, 50, 2394 . Silver alloys, correct sampling, 50,

2394.Atmospheric corrosion. See Corrosion.Atomic attraction, application o f quantum

theory, 50, 6174 .Atomic heat- Seo also Specific heat.

800 Subject IndexA tom ic heat oE—

Aluminium, 50, 216/1.Bismuth at higher temps., 50, 338-4. Copper, 50, 216/1.Crystalline substances at constant pres

sure, 50, 216/i, 281/1.Gold, 50, 210.1.Lead, 50, 216/1, 467/1.Palladium, 50, 69/1.Rhodium , 50, 69-1.Ruthenium, 50, 69/1.Tin, 50, 467/1; noar zoro abs., 50, 530.4. Z inc, near zero abs., 50, 530/1.

A tom ic numbers, lium e-Rotliery relation, ship between ionization potentials and, 50, 421/1.

Atom ic physics, book, 50, 437/1.A tom ic weight, unit, 50, 749/1.Atom ic weight o£—

Barium, 50, 66/1.Caesium, 50, 66/1.Lithium, 50, 66.4.Niobium, 50, 596.1.Rubidium , 50, 66. 1 .Scandium, 50, 66/1.Strontium, 50, 66/1.Tantalum, 50, 596/1.Thallium, 50, 3/1, 66/1.

A .T .V . alloy, 50, 185/1.Auditors, election, 48, 19.Automobiles,

metals for use at high temperatures, 50,532.1.

non-ferrous metals in, 50, 764.4. pistons, deposition o f tin on, 50, 633 /1 ;

diatherm, 50, 104/1. (Seo alsoAlum inium alloys, &e.)

radiators, failure of soldor-soam, 50,27.4.

valve seats, use of inserts to combat wear and erosion, 50, 106.4.

Autum n Lecture, 49, 17.Autum n Meeting, 49, 13.Avialite, 50, 295/1, 428/1.Avional (seo also Duralumin),

corrosion-resistance, 50, 348.1. elastic hysteresis curves, 50, 347/1. m echanical properties, 50, 348/1. use in ropo-railway cars, 50, 687.4.

A W 15 alloy. Soo Alum inium alloys.

Babbitt metal (seo also Bearing A lloys, White metals, and undor names of constituent metals),

bearings, centrifugal casting and finishing, 50, 50/1 ; copper wire laid in to prevent over-heating, 50, 102/1.

casting, 50, 266/1.corrosion by hot vapours o f cracked

petrol, 50, 230/1.CuSn crystallization, 50, 664/1. estimation o f lead, vol., 50, 168/1.Eor aero use, constitution and proper

ties, 50, 157/1. for machine repair work, 50, 373/1. friction tests, 50, 762^1. linings, uniting to shell, 50, 685-4. macrography, 50, 237.4.

Babbitt metal, selection, 50, 157/1.tin -base, offect o f crystal sizo on phys.

properties, 50, 2 99 .4 ; with lowantimony and copper contents, constitution and properties, 50, 157A ; with low antimony and copper contents, structure and hardness, 50, 606/1.

working load, detn., 50, 157-4.Babbitting, 50, 508/1.

correct, importance, 50, 638.4. equipment, 50, 711/1. oE large bearings, 50, 267/1, 581.4. plant, 50, 373.4.

Bahnmetall, 50, 540/1.Balance sheet, 48, 15.Barium,

atom ic weight, 50, 66.-1. detection, 50, 365/1.electrical resistance at low temps., 50,

593/1.estimation as chromate, 50, 488/1. isotopic constitution, 50, 66/1. radioactive decom position, search for

ovidence, 50, 657/1. uses, 50, 375/1.

Barium amalgams, electrolysis, 50, 80/1.Barium ferrite, form ation, 50, 81/4.Barkhausen discontinuities, large, propaga

tion, 50, 345/1.Barkhausen effect, 50, 345/1.

relation to Wiedemann effect, 50, 74.4. thermal analogy, 50, 9/1.

Barkhausen effect in—Iron, transverse, 50, 74/1.

Bars, cold-drawn, calculation of residual tensions, 50, 327/1, 387/1.

Batterium, properties, 50, 14.4, 661/1.Bauschinger effect, 50, 291.4.Bauxite, 50, 782/1.

book , 50, 783/1.Bearing alloys (sco also Babbitt metal,

Boroto, Bronze, Qittcrmetall, White metals, &c., and under namos of constituent metals],

abrasion, 50, 253/1. advantages of various types, 50, 253-4. alum inium alloys, 50, 685/1. analysis, 50, 253.4.bronze, effoct o f antimony, iron, arsonic,

and phosphorus, 50, 321/1 ; effect o f casting temp, and o f addns. of iron, 50, 225.4, 390/1 ; effoct of nickel, 50, 15.-1; in ingot form for sand-castings, tentative revisions of A.S.T.M. standard specification, 50, 321 /1 ; railroad, wear and moch, properties at different temps., 50,225.4.

effect o f variations o£ com position, 50, 734,4.

estimation oE tin, vol., 50, 90.4. for electric m otor shafts, 50, 685.4. friction tests, 50, 253/1, 762/1. graphited. Soo Boroto. lead-base, bibliography, 50, 685/4 ; com*

parativo tests with tin-base alloys, 50. 734-4 ; effect of addns. o f readily

Subject Index 801Bearing alloys,

arsenic, 50, 429.4 ; effect o f cadm ium , 50, 17 A ; m och. properties, effect o f pouring and m ould temps., 50, 153.4, 731A ; properties, roviow , 50, 085.4 ; tests on , 50, 782.4.

lead-bronze, 50, 179.4; o ffcct o fantim ony on m ecli. properties, 50, 537A.

lead-copper, 50, 040/1. macrography, 50, 237.4. pouring temperature, 50, 179.4. properties, 50, 101A ; a t normal and

elevated tem ps., 50, 539.4, 540 .4 ; review, 50, 351.4.

railroad, requirem ents and testing, 50,179.4.

requirements, 50, 179.4, 373.4, 453.1. self-lubricating, 50, 085.4. structure, 50, 179/4. testing, 50, 179/1.tests, practical, to reduce cost, 50,

490 /f.tin-base, bibliography, 50, 085 /1 ; com

parative tests w ith load-base a lloys, 50, 734/1 ; offect o f small am ts. o f aluminium, 50, 470.-! ; hardness, 50, 476/1; properties, roviow , 50, 085.4 ; tests on, pam phlet, 50, 782.4.

wear, relation o f grain-sizo, 50, 266.4. white-metal, bibliography, 50, 685 .1 ;

casting, 50, 774/1 ; m och. properties at different tem ps., 50, 429.4 ; m elting, 50, 774.4 ; properties, review, 50, 085/1 ; requirem ents and p ro perties, 50, 179/1 ; testing, 50, 774/1.

Bearings, adjustment, 50, 702/1. alignment, 50, 762/1.Babbitting. Seo Babbitting. casting by in jection m ethod (load-free),

50, 508/1.commercial, com parative running tests,

50, 702.1.crankshaft, largo, exam ination and

adjustm ent, 50, 638.4. friction, 50, 762/1. large, B abbitting , 50, 207/4. plain and anti-friction, 50, 102.4. protection while in store, 50, 276.4. shells, cleaning preparatory to relining,

50, 253/1, 581 /i. temperatures, measurement, 50, 762.4. testing, 50, 762.4.

Beer.action on copper, 50, 229.4. action on metals, 50, 609 /1 ; b ib lio

graphy, 50, 609.4. corrosion by, electrolytic, 50, 546/1.

Bell metal, investigation, 50, 264.1.Bells,

casting, 50, 265.1.English, 50, 709/1. founding, ancient, 50, 580/1. moulding, 50, 265/1.

Benzines, corrosion o f copper, 50, 544/1.Beryllium,

allotropy, 49, 386. analysis, 50, 337/4. book, 50, 462.4 (review).

VOL. L.

Beryllium,brittleness, 50, 721/1. carbon in, rem oval, 50, 145/1. cathodic sputtering in helium, 50, 657/1. electro-deposition, 49, 373. electrolytic production, m etal fog, 50,

721/1.estimation, critical review, 50, 441/1 ;

gravim etric, 50, 88.4, 441.4, 619 /1 ; gravim etric, b y guanidine carbonate, 50, 309/1 ; in a lloy steels and ferro- beryllium , 50, 442/1.

extraction, 50, 06/1. films, photoolect. properties, 50, 454.4. Hall effect, 50, 594/1. high-purity, oloetrolytie prodn., 49, 365. impurities, absorption, influonco o f m olt

ing conditions, 50, 145.4 ; dotection ,49, 309.

lattice constants, 50, 615.1. melting, crucibles for, 49, 384. melting point, 50, 145/1, 372.4. occurrence, 50, 66/1, 290/1 ; in Austria,

50, 519.4.photoelectric properties of films, 50,

454/1.preparation, 50, 290.4 ; by decom pn. o f

iodido, 49, 377. production, 50, 337/1, 721/1. properties, 50, 66.4, 145.4, 289.4, 290/1,

337.4, 529/1, 721/1 ; roviow, 50, 536/1. pure, electrolytic prepn., 50, 100.4. researches on, 49, 365 (Paper). separation from alum inium by guanidino

carbonato, 50, 88-4, 441/1 ; from F e ‘ ‘ \ U O j” , T h " ” , Zr ‘ , 'IT , C rO ,", M oO j", C u ", A sO ,1" , S bO ,’ " , V 0 4" ’ and W O !" , 50, 309.4, 619/1.

single crystals, 49, 390. specific heat, 50, 721/4. sublimation, 49, 3 79 ; 50, 379.4. uses, 50, 454/1, 640/1 ; in elect, industry,

50, 640/1 ; in ferrous alloy for springs, 50, 182.4.

Beryllium alloys,age-hardenable, properties, 50, 529.4.constitution, 50, 728.4.properties, 50, 66/1, 289/1 ; review, 50,

536.4.recent work, 50, 337/1. use in aero construction, 50, 255.4.

Béryllium-aluminium alloys, casting, 50, 294/1. properties, 50, 294.4.

Beryllium-beryllium oxide eutectic, 49, 372. Béryllium-calcium alloys, 50, 295.4. Beryllium-cobalt alloys, properties on age-

hardening after quenching, 50, 224.4. Beryllium compounds, electrolysis in liquid

am m onia, 50, 100/1.Beryllium-copper alloys,

bibliography, 50, 224/1. constitution, 50, 602.4, 729/1. effect of cold-work, 50, 224.1. eutectoid, tempering and annealing, ou,

256.1.improvement, recent work, 50, 1-/4. preparation, 50, 530/4. properties, 50, 145.4. recent work, review, 50, 14.4.

4 £

802 Subject IndexBeryllium-copper alloys,

sand-cast, propn., 50, 580 4 . uses, 50, 536 4 .

Beryllium-iron alloys, properties, 50, 2954.Beryllium-magnesium alloys, 50, 2 95 4 .

attempts to make, 49, 363/1 (Paper).Beryllium salts, electrolysis, 50, 50/1.Bibliography, international, o f books and

articles in periodicals, 50, 1364 .Bimetal,

applications, possible, 50, 502 4 . compositions, 50, 5024 . manufacture, 50, 5024 . production a t K oltcliugin W orks

(U .S .S .R .), 50, 5024 . properties, 50, 502/1. uses, 50, 5024 . welding, 50, 698/1.

Binary alloys. Seo Alloys, and undor nam es o f constituent m etals.

Biographies. Seo Obituary notices.Birmabright,

finishing, 50, 661/1. joining, 50, 0614 . machining, 50, 661 4 . mechanical properties, 50, 349 4 , 536/1. physical properties, 50, 661/1. uses, 50, 6614 ; in a u to-body construc

tion , 50, 5 1 4 ; in boat construction, 50, 321 4 , 3754 .

Bismuth,atomic heat a t higher tem ps., 50, 3384 . boiling point at atm . pressure, 50, 7364 . buyers and consumers, pam phlet, 50,

138/1.crystals, broaking strength and cloav-

ability , 50, 529 4 . deposits, X -ra y diffraction study o f

structure, 50, 314/1. detection, 50, 8 74 .diamagnetism, anom alous, 50, 2 09 4 ,

4174 ; in crystals, 50, 2184 . diffusion in lead, 50, 7234 . electrical conductivity o f m olten, effect

o f solution o f bism uth ch loride, 50, 6 64 .

electrical resistance, change under hyd ro static pressure, 50, 422 4 .

estimation, as m etal, 50, 4 42 4 ; use o f titanium chloride, 50, 8 84 .

evaporation, 50, 596/1. extraction, pam phlet, 50, 1384 . extrusion pressure, m inim um , 48, 51. films, registration o f cathode rays, 50,

292 4 .fluidity, pressure o f, 48, 53. galvano-magnetic properties o f single

crystals, 50, 593 4 .Hall effect in induced currents in

circular discs, 50, 1454 ; in single crystals, 50, 5934 .

history, pam phlet, 50, 1384. imports and exports, pam phlet, 50, 1384. magnetic susceptibility, effect o f co ld -

w ork, 50, 7 6 4 ; effect o f plastic deform ation , 50, 660 4 .

markets and prices, pam phlet, 50, 1384 . metallurgy, 50, 338 4 . metamagnetism, effect o f impurities,

50, 6 64 .

Bismuth,mineral resources o f U .S .A ., pamphlet,

50, 4044.molten, olect. conductivity, offect of

soln. o f bismuth chloride, 50, 66/1. occurrence, pamphlot, 50, 1384. oxidation by nitric acid, hydrazine as

retarding agent, 50, 1494. producers and dealers, pamphlet, 50,

1384.production, pamphlet, 50, 1384 ; stat

istics, 50, 4554. properties, 50, 1384, 3384. refining, roview of methods, 50, 519/1. single crystals, behaviour under alternat

ing torsional strosses, 48, 227 (Paper) ; diamagnetism, 50, 2184 ; Hall effect, 50, 5934 ; macroscopic and lattico expansion, 50, 2094 ; magnetic susceptibility, dependence on field, 50, 657/1 ; metamagnetism, 50, 7724 ; metamagnetism, offect o f impurities, 50, 664 ; sclerometric hardness,decrease duo to adsorption of activo substances at surface of contact, 50, 54 ; thermal expansion, X-ray studies, 50, 5934 ; thermo- and galvano-magnetic properties, 50, 5934 ; thermoelectric power near melting point, 50, 6574 ; X-ray studies, 50, 417/1.

thermal conductivity, effect of transverso magnetic fields, 50, 7214.

thermal expansion of singlo crystals, X -ray studios, 50, 593/1.

thermo-magnetic properties of single crystals, 50, 593/1.

twinning, 50, 5294.uses, 50, 1384 , 3384 , 4554 , 6404 ;

for filling tubes to be bent into coils or spirals, 50, 1824.

Bismuth alloys (see also M atrix alloy) , use for filling tubes to be bent into coils

or spirals, 50, 182/1.Bismuth-aluminium alloys, constitution,

50, 151/1.Bismuth amalgams, electrolysis, 50,

804.Bismuth-antimony alloys,

crystal structure, 50, 3494. homogeneous, prepn., 50, 3494.

Bismuth-calcium alloys, constitution, 50, 124.

Bismuth-gold alloys, super-conductivity, 50, 164.

Bismuth-lead alloys, boiling point curves, 50, 7364. deposition, 50, 6324. electrolysis of solid, 50, 6654. solid solutions, 50, 4254. superconductivity, 50, 6044.

Bismuth-magnesium-lead alloys, boiling point curves, 50, 7364.

Bismuth-potassium alloys, KBi2, lattice structure, 50, 3634.

Bismuth-silver alloys, constitution, X-ray study, 50, 364. crystal structure, 50, 364. preparation for quantitative analysis, 50,

4414.

Subject Index 803Bismuth-sodium alloys, N aBi, lattice

structure, 50, 3634 .Bismuth sulphides, therm ochem istry, 50,

6614 .Bismuth-tin alloys, solid solutions, 50,

4254 .Blackor, 50, 7354.Blanking press, high-speed, 50, 1184.Bleaching liquors, corrosion b y , in textile

industry, 50, 4 35 4 .Blowholes in cast m etals, elim ination by

moans o f applied pressure, 49, 333.Bohnalite, cylinder heads, 50, 3744 .Boilers,

caustic embrittlement o f m etal, 50, 2 94 . metals and alloys for, 50, 3 234 . scale deposits, rem oval from hot-water

apparatus, 50, 3034 . scale-formation, 50, 2 9 4 .

Boiling points of—Metals and alloys a t atm . pressure, 50,

7 364 .Bonderizing, 50, 844.Borides,

crystal structure, 50, 334. superconductivity, 50, 3524.

Boring,with diamond, appn. to production work,

50, 7044 .with tungsten carbide tools, 50, 5774 .

Boroto, properties, 50, 1 74 , 5404 .Brass(es) (see also Aluminium-brasses,

Lead-brasses, Manganese-brasses, Muniz mêlait Nickel-brasses, Tom- basil, & c., and under names o f con stituent m etals),

action of coffee, 50, 740 4 . action of tea, 50, 7 404 . addition of third metals, equivalent

values, 50, 537 4 .Admiralty, condenser tubes and ferrule

stock , tentative revisions o f A .S .T .M . standard specifications, 50, 3214 .

a -, annealing and grain-growth, effect o f different elements, 49, 247 (Paper) ; con tg . iron, ageing effects, 49, 263 ; tensile proj>erties, effect o f different elements, 49, 252.

aluminium-. See Aluminium-brasses. aluminium in, disadvantages, 50, 5384 . analysis, 50, 4 8 7 4 , 6184 . annealing, bright-, chom . offect o f

gaseous atm ospheres, 50, 1854 ;bright-, in gas-fired surfaco-com bustion furnaces, 50, 7644 : bright-, with hydrocarbon gases, 50, 4 564 ; o f strip in continuous furnace, 50, 6944 ; use o f gas, 50, 5 3 4 .

annealing furnace, elect., for strip, 50, 271 4 .

bearing shells, cleaning preparatory to rolining, 50, 253 4 .

P, diffusion of zinc, 50, 4704 ; tensile properties, 50, 7314 .

p — y a transformation in hot-working, 50, 7304 .

burnished, radiation coeff., 50, 3194. cadmium-. See Cadmiunx-brasses. cadmium deposits, 50, 2474 . cartridge cases, cannon, m anuf., 50,7674 .

Brass(es),casting, 50, 7724 ; gating, valuo of

deep otching test, 50, 2654, 7094 ; practical hints, 50, 7094.

castings, factors influencing soundness, 50, 3904 ; mech. properties, 50, 7724 ; segregation, 50, 6074; thick, molting, 50, 1964.

centrifugal casting, 50, 2674, 7114. chromium-plated, tarnishing, 50, 964. chromium-plating, 50, 3614. clips, circular-shaped, dies for bending,

50, 7674. cold-heading, 50, 2594. cold-rolled plates, internal stress, 50,

7294.cold-rolled and annealed, directional

properties, 50, 6614. colouring, brown, 50, 2624. condenser tubes and ferrulo stock,

Admiralty, tentative revisions of A.S.T.M. standard specifications, 50, 3214; and ferrule stock, 70 : 30, tentativo revision of A.S.T.M. standard specifications, 50, 3214 ; corrosion, 50, 1604, 1834.

condensers, surface-, construction, 50, 6904.

corrosion, 50, 7384 ; by chromic acid, effect of cold-rolling and annealing, 50, 4344 ; by distilled water and salt soins., prevention by addn. of sodium dichromate, 50, 3584 ; by hot vapours of cracked petrol, 50, 2304 ; by milk, 50, 3024 ; by phosphoric acid, 50, 4364 ; internal, 50, 254 ; of condenser tubes, 50, 1604, 1834 ; of sugar evaporator tubes, 50, 6674.

corrosion-fatigue, 50, 424. creep, 50, 4774.cutting of polished surfaces, 50, 5754 ;

speeds, 50, 7674. deep-drawing, 50, 564. density, effect of torsion, 50, 6594. deposition, complex cyanides in soins.,

50, 6324 ; from cyanide soins., 50, 6314 ; from thiocyanato soins., 50, 2484.

effect of aluminium. Seo A lum inium - brasses.

effect of cadmium. Seo Cadm ium - brasses.

effect of impurities, summary of literature, 50, 1534.

effect of lead. See Lead-brasses. effect of manganese. See Manganese-

brasses.effect of nickel. Seo Nickel-brasses. effect of silicon, 50, 5384. effect of third metals, 50, 4264. electrical resistance, effect of torsion,

50, 6594 ; of molten, 50, 1524.£, olectrodeposition, 50, 6714. estimation of sulphur, rapid method, 50,

3104.estimation of tin, gravimetric, 50, 2414. extrusion o f bars, sections and tubes,

50, 5044 ; variations in micro-structure, 50, 5034 , 7034.

804 Subject Index

fatigue, 49, 107; 50, 2254, 7534;tests in shear, 50, 2114.

films, electrodoposition, 50, 5654. forging;, variations in microstructuro,

50, 5034, 7034. founder’ s fever, 50, 6484. founding, fundamentals, 50, 7094. foundry, economies, 50, 2654 ; organiza

tion, 50, 2654. foundry practice, fundamentals, 50,

1264.gas-meter coin wheels, machining, 50,

2614.hardness, chango caused by bonding,

50, 6594 ; effect of cold-rolling, 50, 64 ; effoct of porosity, 50, 6074.

heat-exchanger tubes, holding power and tightness, 50, 6034.

heat-transfer to, in annealing furnaces, 50, 4564.

heat-treatment, 50, 3824, 4 9 9 4 ; of strip in continuous annealing furnace, 50, 6944.

holes, piercing, 50, 7044. hot-pressing, 50, 2604. hot-worked, 3 ——> a transformation, 50,

7304.hydrogen overvoltage, relation to compn.,

50, 1004.ingots, cooling in water-cooled moulds,

50, 7724. internal stress in tubes, 50, 144. lacquering, 50, 1204. lead-. See Lead-brasse3. lead in, detection bv Ericlisen test, 50,

5384.machinability of rods, 50, 2 6 0 4 ; with

respect to lubrication and cooling of turnings, 50, 7674.

machining gas-meter coin wheels, 50, 2614 ; lubrication, 50, 7674.

manganese-. See Manqaiicsc-brasses. marks approved by U.S.S.R. standards

cttee., 50, 1834. melting in cupola, 50, 1274, 7 0 94 ;

metal container as substitute for ordinary crucible, 50, 5824 ; uso of iron and steel in mills, 50, 3314.

melting furnaces, elect., experiences, 50, 1314; gas-fired, 50, 1304; oil-fired, 50, 3924.

molten, elect, resistance, 50, 1524. nickel-. Soo Nickel-brasses.90 : 10, softening curve, 49, 263. pickling, black, 50, 2624. pipes, for water installations, 50, 3784 ;

sprayed coatings, properties, 50, 1194 ; (water), used as substitute for lead in U.S. post offices, 50, 3784.

polishing of castings of awkward shape, 50, 5794 ; pastes, 50, 5794.

pressing, hopper for feeding shells, 50, 7034.

properties, 50, 18 34 ; at high temps., 50, 4774.

radiator fins, forming and blanking die, 50, 5744, 7674.

red, analysis, 50, 4874, 6184 ; breaking strength o f sand-cast test-bars, 48,

Brass(es),287; centrifugal casting, 50, 7 1 14 ; freezing temperatures, 50, 2964 ;phosphorus in, 50, 7734 ; phys. properties, factors affecting, 50, 4274, 7 3 1 4 ; residues, working up, 50, 5 1 9 4 ; scrap, removal of antimony, 50, 5 2 0 4 ; symposium, 50, 4624 (review).

remelting of secondary, in reverberatory furnace, 50, 2654, 3304.

rigidity, modulus, chango due to cold- working, 50, 2 1 6 4 ; temp, coeff., 50, 824, 1584.

riveting, countersunk, 50, 3824. rods, free-cutting, machinability, 50,

2 6 0 4 ; ornamontal uses, 50, 3784, 7634.

sawing, 50, 1184.scrap, molting in reverberatory furnaces,

50, 3904, 7734. season-cracking, 50, 4274. secondary, melting in reverberatory

furnaces, 50, 2654, 3304.70 : 30, condenser tubos, tentative re

visions of A.S.T.M. standard specifications, 50, 3214 ; thermal conductivity at high temps., 50, 44 .

sheet, ornamental, romoval o f blemishes, 50, 5044 ; ornamental, requirements, 50, 5044.

shrinkage, effects of products of com bustion, 50, 1964, 2084.

silver-plating, matt surface, 50, 6324. solid solutions, segregations, 50, 3074. special, 50, 3494, 5374, 5 3 8 4 ; high-

quality, manuf., 50, 7 3 0 4 ; manufacture, simplified method, 50, 154, 774 ; preparation, 50, 1264.

strengthening on cold-rolling, 50, 64 . strip, continuous elect, annealing fur

nace, 50, 2 7 14 ; ornamontal uses, 50, 3784, 7634 ; staining duo to annealing in oxidizing atm., 50, 4274.

strip ingot casting, mould materials for,49, 203 (Paper).

sulphide films, 50, 1504. tapping, 50, 7044.tensile properties at high temps., 50,

4774 ; effect of cold-rolling, 50, 64. threaded rods, increase o f enduraneo

limits by surface pressures, 50, 144. tin-. See Tin-brasses. torsion, offect on density, dimensions

and elect, resistance, 50, 6594. tubes, internal stress, 50, 144 ; shaped,

prodn., 50, 1174; uso in waterservices, 50, 5684.

uses, in railway work, 50, 524 ; in sugar and confectionery industries, 50, 5694.

welding, 50, 3844 , 5 0 1 4 ; of fine wire, oxy-acetylene, 50, 6974 ; of pipe, oxy-acetylono, 50, 1124; oxy-acetylene, practical hints, 50, 1874.

wheels, thin, quantity prodn., 50, 3874. wire, olastic extension under longitudinal

stress, 50, 704 ; properties, 50, 574 ; stretched, crystal lattice distortion,50, 6174.

Subject Index 805Brass(es),

wire-drawing, researches, 50, 574, 191/1 ; surfaco temp, of metal during, measurement, 50, 706/1.

Brastil, properties, 50, 4284.Brazing,

copper, in controlled atmosphere furnaces, 50, 186/1, 499/1.

copper-zinc solder, distillation phenomena in use of, 50, 53A .

equipment, elect., 50, 572/1. furnaces with controlled atmosphere, 50,

1314.in hydrogen atmosphere in elect, furnace,

50, 1104, 3834. solders, Sil-Fos, 50, 534, 1864, 696/1 ;

silver, 50, 5714, 6954. with self-fluxing alloy, 50, 5724. with silver solders, 50, 4994, 7654.

Brazing of—Copper water tanks, 50, 3834.Monel metal, 50, 194. Nickel alloys, 50, 1884.

Brewery plant, corrosion, 50, 274 (see also Alum inium , brewery vessels, and C opper, brewing vessels).

Brinell hardness testing. See Testing.Britannia metal, ago-hardening, X-ray

study, 50, 7274.British Empire,

manufacturing industries, 50, 614. Universities, 4th congress report, 50,

1394 ; year-book, 50, 458/1. British standard specifications, index, 50,

1334. Broaching, developments, 50, 260/1.Bronze Age, criticism of use of term, 48,105.Bronze(s) (see also Gun-metal, L ead -

bronzes, Phosphor-bronze, Silicon - bronze, See., and under names of constituent metals),

acid-resisting, book, 50, 4034 ; manuf., 50, 5074.

aluminium-. See A lum in ium -“ bronzes analysis, 50, 6734.ancient, chem. compn., 50, 3494 ;

cleaning, 50, 3284 ; from Palestine, analyses, 50, 2024 ; from Royal graves at Ur, microstructuro, compn., and corrosion products, 48, 97 ; from Ur, 50, 5204 ; from Zimbabwo ruins, 50, 520/1 ; patination, 48, 97, 106, 107.

bearing, compositions, table, 50, 3214 ; (Cu 80 : Sn 10 : Pb 10) offect o f antimony on mech. properties, 50, 5374 ; effect of antimony, iron, and arsenic and phosphorus, 50, 32 14 ; effect o f casting temp, and of addns. o f iron, 50, 2254, 3904 ; effect of nickel, 50, 154 ; in inçot form,A.S.T.M. tentative revisions of standard specification, 50, 3214 ;properties, 50, 1014 ; railroad, wear and mech. properties at different temps., 50, 2254.

bearings, friction and abrasion, 50, 2534 ; shells, cleaning preparatory to relining, 50, 2534.

bell-, bessemerization, 50, 5194, 7804 ; recovery of tin, 50, 5194 , 7804.

Bronze(s), bushings, boring, 50, 7684. casting, 50, 77 24 ; of cylinders, 50,

2644 ; of docorativo work, 50, 330/1; of plates in green sand, 50, 1274, 7 7 24 ; of statuary, 50, 1264; to resist pressure, 50, 3904.

castings, artistic, prodn. by using flowers as patterns, 50, 3914 ; booklet, 50, 71 54 ; decorative, patterns and moulds, 50, 1284 ; factors influencing soundness, 50, 3 9 04 ; for pressure service, manuf., 50, 1234, 1964, 5084 ; mech. properties, 50, 7724 ; to withstand hydraulic pressure, manuf., 50, 1264.

centrifugal casting, 50, 2674, 7114. chromium coatings, tarnishing, 50,

1774.cold-rolled plates, internal stress, 50,

7294.cold-rolled and annealed, directional

properties, 50, 6614. compositions, 50, 1 5 4 ; as usod by

French railways, 50, 524 ; to meet engineering requirements, 50, 1954.

corrosion, 50, 35 54 ; by hydrochloric acid, 50, 434/1; by inorganic acid«, 50, 6 0 84 ; by milk, 50, 3 0 2 4 ; by phosphoric acid, 50, 4 3 44 ; by sulphuric acid, 50, 4 3 44 ; by vinegar, 50, 6674.

corrosion-fatigue, 50, 424. corrosion-resistance, 50, 834. cutting, speods, 50, 7674. deep-drawing, 50, 564. effect of gas bubbles and conchoidal

flaws, 50, 2254. effect of impurities, 50, 2954, 6 0 24 ;

summary of literature, 50, 1534. effect of lead. See Lead-bronzes. effect of nickel. See Nickel-bronzes. effect of phosphorus, 50. 6034. effect of silicon, 50, 6614. electrical resistance of molten, 50, 1524. endurance bending strength o f hard-

drawn wires, 50, 2894. estimation of manganese, 50, 894. estimation of phosphorus, rapid, 50,

5544.estimation of sulphur, rapid method,

50, 3104.estimation of tin, gravimetric, 50,

2414.foundry of Cie. du Chemin do Fer du

Nord (France), 50, 5804. foundry practice, 50, 1954. freezing temperatures, 50, 2964. gears, selection and treatment of mate

rials, 50, 1264, 7094.Greek, ancient, analysis and structure,

50, 1534.hardness, effect o f casting conditions

50, 6074. high-quality, manuf., 50, 7304. inverse segregation, 50, 6074. lacquering, 50, 1204. lead-. See Lead-bronzes.“ lead sweat,” effect o f nickel, 50, 7724. lead—zinc-. See Lead-zinc bronzes.

806 Subject IndexBronze(s),

machinal)ility, with respect to lubrication and cooling of turnings, 50, 7Í37/Í.

machining, lubrication, 50, '767A . manganese-. Seo M anganese-braises. mechanical properties, 50, 15A . melting in cupola, 50, 264/1. microstructure of specimens from Royal

graves at Ur, 48, 97 (Paper). mirrors, ancient, 50, 497.4. molten, olect. resistanco, 50, 152.-1. nickel-. See Nickel-bronzes. patina, groon, artificial, 49, 1G0. permanent mould casting, 50, 123/1,

712^1.phosphor-. Soo Phosphor-bronze. physical properties, 50, 15.4. plates, moulding and casting, 50, 127/1,

772/1.polishing, pastes, 50, 579/1. powders, gluo vehicles, 50, 890/1 ;

mnnuf., 50, 573/1. properties, 50, 183/1. residues, working up, 50, 510/1. sawing, 50, 118/1.scrap, removal of antimony, 50, 5204. shrinkage, theory, 50, 13/1. special, 50, 426/1.statuary, artificial green patina, 49,

160; casting, 50, 126/1.Sumerian, microstructuros, 48, 97;

nickel in, 48, 105, 108. swords, evolution, 50, 204/1. symposium, 50, 462/1 (review).Taurus. See Taurus bronzes. tensile properties of rods at low temps.,

50, 431/1. trade names, 50, 15/1. transmission wires, tonsilo properties,

50, 657A .uses, for street ornaments, &c., 50,

378.4; in railway work, 50, 52/1; in sugar and confectionery industries, 50, 569.4.

welding, 50, 501/1; of extruded sections, 50, 697.4.

wire, bending capacity, 50, 431/1; for telephone and telegraph purposes, 50,376.4.

Bronzing, book, 50, 333/1.Broternal, properties, 50, 301.1.B.T.G. alloy, 50, 185.4.Buffing (seo also Polishing),

wheels, data, 50, 505.1; preparation, 50, 388.4.

Buffing of—Chromium plating, 50, 193.1.

Burnishing, tools, 50, 769/1.

Cables,high-tension, joints, insulation, 50, 764.1. high-voltage, theory and practice, 50,

322/1.jointing, book, 50, 717/1. low-voltage, theory and practice, 50,

322/1.overhead, comparison o f materials, 50,

320.4 ; freely-swinging, stresses, 50,174.4.

Cables,sheathing, design, 50, 3 2 2 /i; fatigue,

50, 527/1, 539.1 ; load. Soo Lead. underground, failure, 50, 322/1.

Cadalux plating process, 50, 247/1.Cadmium,

analysis, rapid, 50, 677/1. anodic polarization in aqueous solns.,

50, 610/4.boiling point at atm. pressure, 50, 736/1. castability, 50, 329.4. characteristic frequency, 50, 71/1. -coating o f stool wire, 50, 613.4. colouring of deposits, 50, 192/1, 504/1,

706/1.deposition, 50, 95/1, 370/1 ; analysis

o f solns., 50, 675/1; Cadalux procoss, 50, 247/1 ; “ Einsinkon,” 50, 247/1; factors influencing officicncy for rust protection, 50, 8 5 /i ; fromcadmium sulphato solns., effoct of P a , c.d., and tomp. on crystal size o f deposit, current efficiency and electrodo efficiency ratios, 50, 662/1; on aluminium and Duralumin, 50, 669/1 ; on fiat blanks boforo forming, 50, 563.4 ; on iron and steel castings, 50, 176/1, 314/1 ; stability o f cyanide solns., 50, 2 4 7 4 ; stability of solns., 50, 314/1.

deposits, colouring, 50, 192/1, 504/1, 706/1 ; compared with zinc deposits for protection of steel, 50, 450/1; factors affecting efficiency as rust preventive, 50, 235.4; protectivevaluo, 50, 32/1; protectivo valuo for wire products, 50, 85-4; relative valuo of zinc and, as protective coatings, 50, 439/1; resistanco to sea-water, 50, 712.4.

diffusion into copper, 50, 470/4. electrical conductivity of singlo crystals,

50, 596/1.electrical resistance, change under hydro

static pressure, 50, 422/1; for temps, below 90° K ., 50, 726/1.

estimation, gravimetric, 50, 554.4 ; in cadmium cyanido baths, 50, 6 7 5 /i; in copper, 50, 488/1.

estimation of zinc, rapid, 50, 677/i. extrusion pressure, minimum, 48, 51. films, electrodeposition, 50, 565/1 ;

registration of cathodo rays, 50,292.4.

fluidity, pressure of, 48, 53. hydrogen overvoltage, 50, 452.1. poisoning, history, 50, 648/1. rolling structure, 50, 35/1, 553.1. separation of copper, 50, 366.4. single crystals, elect, conductivity, 50,

5 9 6 /i; scleromctric hardness, decrease duo to adsorption of active substancos at surface o f contact, 50,5.4 ; thermal conductivity, 50, 596/1.

thermal conductivity, at high temps., 50, 4 /1 ; o f singlo crystals, 50,596/1.

uses, 50, 455/1.Cadmium-aluminium alloys, constitution,

50, 151/1.

Subject Index 807Cadmium amalgams,

heats of soln., boats o f formation and free energies of formation, 50, 12/1.

metallography, 50, 124. transport numbers, 50, 353.-1.

Cadmium-antimony alloys,CdSb, existence, 50, 3544 ; oxistenco of

2 modifications, 50, 440.4. crystal structure, 50, 440,1. magnetic susceptibility, 50, 354.4.

Cadmium-brasses, 50, 538.1.Cadmium-copper alloys,

corrosion of wire, 50, 4794. density, 50, 1524.electrical resistance, 50, 152.4 ; tomp.

cooff., 50, 152/1.Hall effect, 50, 152.4. specific heat, 50, 152.1. thermoelectric power, 50, 1524. wires, hard-drawn, for overhoad trolley

purposes, field tosts, 50, 377.4 ;manuf. and properties, 50, 472.4.

Cadmium-gold alloys, constitution, oloctro- chom. study, 50, 728.-1.

Cadmium-lead alloys, boiling point curves, 50, 736/1.

Cadmium-lead-antimony alloys, boaring properties, 50, 17.1.

Cadmium-lead-nickel alloys, age-hardenable, 50, 290.4. solid solubility of NiCd„ 50, 200.4.

Cadmium-magnesium alloys, boiling point curves, 50, 730/1. chemical properties, 50, 604.4. electrical conductivity, 50, 10/1. equilibrium diagram, 50, 001.4. heat-treatment, 50, 004.4.Lorenz number, 50, 10/1. physical properties, 50, 604.-1. thermal conductivity, 50, 10-4.

Cadmium-mercury alloys, superconductivity, 50, 4754.

Cadmium-silver alloys, electrodeposited, chango in reflecting

power caused by tarnishing, 50, 994.

eutectoid, tempering and annealing, 50, 256/1.

properties, 50, 476.4.Cadmium-silver-antimony alloys, con

stitution, 50, 430.4.Cadmium-silver-zinc alloys, properties, 50,

4704.Cadmium-strontium alloys,

constitution, 50, 157/1. hardness, 50, 1574. preparation, 50, 1574. specific gravity, 50, 1574.

Cadmium sulphides, thermochemistry, 50,0014.

Cadmium-thallium alloys, magnotie susceptibility, 50, 3544.

Cadmium-tin ’ alloys, equilib. diagr., 50, 2134.

Cadmium-zinc alloys, boiling point curves, 50, 730.4. deposition, barrel, 50, 474. magnetic susceptibility, 50, 354.4.

Cadmium-zme-copper alloys, deposition from cyanide baths, 50, 2474.

Caesium (soo also Alkali metals), atomic weight, 50, 00/1. bibliography, pamphlot, 50, 1374. electrical resistance, chango undor hydro

static pressure, 50, 422/1. history, pamphlot, 50, 137/1. isotopic constitution, 50, 00.1. markets and prices, pamphlet, 50, 137/1. producers and dealers, 50, 1374. production, pamphlet, 50, 1374. reaction products on graphite structure,

50, 016.<1.separation, by isoamyl alcohol, 50,

3094. uses, 50, 1374, 455/1.

Calcium, as bismuth eliminator, 50, 349.1. as degasifying and reducing agent, 50,

3494.as deoxidizer, 50, 349.4. detection, 50, 874.electrical resistance, chango undor hydro -

static pressure, 50, 1224. estimation, 50, 442.-1 ; quant., with

picrolonic acid, 50, 167/1. production, 50, 349/1. properties, 50, 3494. separation from magnesium by sodium

tungstato, 50, 442/1. uses, 50, 349.4, 497.-1.

Calcium-beryUium alloys, 50, 2954.Calcium-bismuth alloys, constitution, 50,

124.Calcium-lead alloys,

bearings, 50, 3494. cable-sheaths, 50, 3494.

Calcium-magnesium alloys, chemical properties, 50, 604.4. equilibrium diagram, 50, 004-4. heat-treatment, 50, 004-4. physical properties, 50, 6044.

Calcium-sodium alloys, equilib. diagr., 50, 0014.

Calorimeters. See Laboratory apparatus.Calorizing, 50, 300/1., 763.4.

for protection of piping, 50, 089/1. new method, 50, 84.4.

Canada, aluminium industry, 50, 2764.Empire Mining and Metallurgical

Congress, 50, 2024. manufacturers, index, 50, 2814.

Carbides, crystal structure, 50, 33/1. metal, equilibrium investigations, thesis,

50, 7824. superconductivity, 50, 352.4.

Carboloy (see also Tungsten carbide), cutting tools, grinding, 50, 705/1 ; use

by White Motor Co., 50, 7054.Carbon dioxide,

indicators. See Laboratory apparatus. solid, temps, reachod with, 50, 680-4.

Carbon monoxide, absorption by metals, 50, 470^1.

Carborundum. Seo Ilefractory materials.Cartridge cases, cannon, manuf., 50, 7674.Castability o f—

Alloys, 50, 329.4, 708.4.Pure metails, 50, 3294.

808 Subject IndexCasting (see also M oulding, &c.),

bottom pouring hand ladle, 50, 127/1. centrilugal. Sco Centrifugal casting. contraction, danger, 50, 389/1. defects, 50, 194/1, 770/1. die-. Sec Die-casting. gates and risers, 50, 121/1. gravity. See Die-casting. in Erichsen moulds, 50, 580.4. in vacuum, 50, 197/1. permanent-mould. See Permanent mould

casting.pipes, formation, 50, 389/1, 770/1. pores, formation, 50, 3894, 7704. pouring, theory of rate o f cooling in, 50,

580/1.pressure. See Die-casting. risers and lost heads, 50, 506/1. running qualities of metal, detn., 50,

124/1, 329/1.Casting of—

Aluminium, avoidance o f porosity, 50, 5074 ; ingots for rolling, pouring practice, 50, 1944 ; precautions, 50, 507/1 ; removal of gases, 50, 507/1 ; rolling billets, 50, 580/1 ; shoe lasts, 50, 330/1 ; strip for rolling, 50, 195/1.

Aluminium alloys, 50, 1024, 1244,291.1 ; offect of pouring temp., method of cooling and dissolved gas, 50, 195/1, 5 8 04 ; mincingmachines in chill moulds, 50, 930.-1; pots nnd kottles, 50, 1254.

Aluminium-brass, improved method, 50, 5384.

Aluminium-“ bronzes,” 50, 1254,602.4 ; precautions, 50, 204^1.

Aluminium-copper alloys, efToct of modifiors, 50, 330/1.

Artistic metal work, 50, 3304.Babbitt metal, 50, 2664..Bearings (lead-freo) by injection method,

50, 508/1.Bells, 50, 2054.Brass, 50, 772/1; doep etching applied

to gating problems, 50, 2054 , 7094. ; practical hints, 50, 7094.

Bronze, 50, 772.1 ; cylinders, 50, 264/1 ;decorative work, 50, 330/1.

Constantan, failures, 50, 4734. Copper-nickel alloys, 50, 1254.Elektron, 50, 154/1, 507/1; removal of

noxious gases, suction apparatus, 50, 5084.

Magnesium alloys, 50, 507/1, 709.1. Monel metal, 50, 19.4, 20 0 .-1 .Nickel, 50, 2664, 581/1.Nickel-brasses, 50, 265*4, 709.-1 ; thill-

walled articles, 50, 330/1. Nickel-bronzes, 50, 709/1.Pistons, 50, 771/1.Platinum in vacuum, 50, 197.1.Silumin, 50, 330/1.Silver, 50, 2664.Silver-copper alloys, 50, 266.1. Silver-copper-nickel-zinc alloys, 50,

6064.Strip ingots, mould materials for, 49,

203 (Paper).Zinc, 50, 331/1 ; rods, 50, 581/1.

Casting of—Zinc alloys, 50, 331/1.

Castings, cleaning, 50, 128/1, 263.4. for high-temperature high-pressure

service, considerations and tests, 50, 814, 737/1.

gases in, 50, 352/1.heavy, moulding and pouring, 50, 389/1. macrostructure, effect of " turbulence

duo to gases, 50, 352/1. polishing, 50, 2634. porosity tests, 48, 292, 293. radiology. See Radiology. sand-blasting, 50, 128/1. testing, 48, 273 (P aper and General

Discussion) ; 50,313/1. volume changes, 50, 770/1.

Cathode rays, registration by thin films o f metals and

metal compds., 50, 292.-1. scattering by crystal surfaces, 50,

6734.Cathode sputtering. See Sputtering. Celtium. Seo Hafnium .Cementation, 50, 729/1 (seo also Diffusion).

book, 50, 457/1.Cementation of—

Iron and steel by chromium, 50, 014/1. Cements,

metallic, 50, 186/1. refractory. See Refractory materials.

Centrifugal casting, 50, 267/1.effect on grain-size, 50, 391/1.

Centrifugal casting of—Bronze, 50, 7114.Delta metal, 50, 711/1.Lead-bronze, 50, 7114.Red brass, 50, 711/1.

Cerium,bibliography, pamphlet, 50, 137/1. history, pamphlet, 50, 137A . occurrence, 50, 137/1, 290/1. preparation, 50, 290.4. properties, 50, 137/1, 2904. uses, 50, 4554.

Cerium-magnesium alloys, chemical properties, 50, 004/1. electrical conductivity, 50, 104. equilibrium diagram, 50, 604/1. heat-treatment, 50, 6044.Lorenz number, 50, 10.4. physical properties, 50, 6044. thermal conductivity, 50, 104.

Cerium mercuride, 50, 540.4.Chamotte. See Refractory materials. Cheese, effect o f metals, 50, 6604. Chemical engineering,

catalogue, 50, 4064.catalogue of American industries, 50,

287/1 (review).Chemical industries,

British, history, book, 50, 287/1 (review). corrosion and other problems in use of

metals at high tomps., 50, 531^1. Chemical plant,

materials for, 50, 323/1, 704A . metals and alloys in, book, 50, 457/1,

Chemical properties. See under Specific properties.

Subject Index 809Chemical technology, book, 50, 4614

{review).Chemistry,

analytical. Seo Analysis. applied, progress, report o f Soc. Chem.

Ind., 50, 208/1, 416/1 (review). bibliography of bibliographies, 50, 4074. book, 50, 7174.calculations, books, 50, 4054, 5264. constants, tables, 50, 4044. encyclopaedia, 50, 4584. handbook, 50, 6564 (review), 7174. history, book, 50, 614. industrial, books, 50, 604, 4034. inorganic, book, 50, 614. of metals, book, 50, 1334. physical, books, 50, 614, 1404. reference book, 50, 2064.

China, coins, anciont, analyses, 50, 1524.Chlumin, proporties, 50, 114, 124, 2214,

4254 , 6614.ChrogoTJ42, eorrosion-resistance, 50, 7394.Chromite. Seo Refractory materials.Chromium,

action of beer, 50, 6094. action of fruit juices, 50, 3764. cementation of iron and steel, 50, 6144. deposition, 50, 4504, 4924, 6294,

6304 ; advantages and limitations, 50, 3714 ; analysis o f baths, 50, 4924 , 6304 , 6 3 1 4 ; anodes andauxiliary anodes, 50, 448/1 ; at high c.d., 50, 1774 ; automatic equipment, 50, 5644 ; bibliography, 50, 7594 ; books, 50, 4064, 4644 (review),5264, 6544 (review), 7144, 7174 ; bright plating ratio, 50, 3144, 3714 ; chem. and phys. actions in bath, 50, 6294 ; cnomistry of process, 50, 1764; cooff. of metal distribution, 50, 3144 ; cost calculations, 50, 68 14 ; deposits free from fissures and pores, 50, 1764, 4494 ; dermatitis caused by uso of “ Chrom- protekt ” coating on surface of bath, 50, 6814 ; design o f equipment, 50, 56 44 ; dotn. of sulphuric acid in baths, 50, 464 , 6314 ; difficulties, 50, 954 ; durable bright finish, 50, 3704 ; effect of addns. to bath on hardness of deposits, 50, 177/1 ;electrostatic distribution, 50, 3714 ; experiences, 50, 454 ; Fescol process, 50, 68 24 ; for woar-resistance, 50, 4494 ; from aqueous chromic acid solns., theory, 50, 3704 ; fromchromic acid solns., limits of rational current yield, 50, 4484 ; from “ Kr ” bath, fissure- and poro-froo deposits, 50, 4494 ; from tervalent chromium salt solns., 50, 7 5 8 4 ; “ high a c id ” process, 50, 6814 ; high c.d.problems, 50, 3144, 6824 ; historical survey, 50, 9 5 4 ; hydrogen in deposits, 50, 6294 ; hygienic advantages of “ Chromprotekt ” coating on surface o f bath, 50, 6814 ; improving durability of plate, 50, 454 ; in glass industry, 50, 6294 ; installation of equipment, 50, 5644 ;

Chromium,in U.S.A., 50, 954 ; influonco of cathode metal, 50, 954 ; lead and load- antimony anodes, 50, 954, 7584 ; list o f patents, 50, 464 ; magnesium sulphate nickel bath for undercoats, 50, 95/1 ; occupational risks, 50, 4934 ; on aluminium and its alloys, 50, 964, 1774, 4494, 5634, 6814 ; on aluminium, Perma-Chromo process, 50, 4924 ; on automobilocrankshafts, pistons, &c., 50, 5324 ; on brass, tarnishing of deposits, 50, 1774 ; on common metals and alloys, 50, 4494 ; on elect, appliances, 50, 5644 ; on gauges, 50, 4924, 6814 ; on glass moulds, 50, 5634 ; on light metals, 50, 454 ; on rollod zinc and zinc dio-castings, 50, 994 ; on silvor, 50, 964, 1774, 6294 ; on stool dies, 50, 5634 ; on steel for woar-rosistanco, 50, 964, 4494 , 5634 , 7584 ; on steel rolls, 50, 5634 ; on zinc, 50, 37 14 ; on zinc shoot, 50, 5634; porosity of deposits, 50, 324 ; possibility of use of chromium anodes, 50, 6814 ; practice and theory, 50, 1764 ; prepn. of articles for, 50, 954, 5644, 578/1 ; propn. of thick deposits free from fissures and pores, 50, 3714 ; present position, 50,964 ; production methods, 50, 5634 ; prodn. of good deposits, 50, 954 ; protective covering layer on surfaco of bath, 50, 4494 ; removal of fumes from bath, 50, 4494 ; skin diseases caused by uso of protective coatings on surfaco of bath, 50, 6814 ; status, 50, 7584; Stella soln., 50, 37 14 ; thick doposits, 50, 464 ; throwing power of baths, 50, 454, 448/1, 6824.

deposits, as protection against corrosion- fatigue, 50, 3144 ; buffing, 50, 1934, 5644 ; fissuro- and poro-freo, from “ Kr ” bath, 50, 4494 ; on brass, tarnishing, 50, 954, 1774 ; on plug gauges, resistance to wear, 50, 964 ; porosity, 50, 324, 4494 ; proporties, 50, 5644 ; protective value, 50, 854 ; tests, 50, 854 ; versus stainless steel, 50, 3614.

detection, in acid solns., 50, 874 ;spectroscopic, 50, 6204.

die-casting, elect, rotors, 50, 7744. diffraction patterns, 50, 7474. electrolytic, thermal expansion, 50,

1464 ; throo crystallino modifications, 50, 954.

estimation, in Ni—Cr, Ni-Cr—Fo and Ni-Cr cast-iron, 50, 5544 ; iodo- metric, 50, 1674 ; of nickel and, in same soln., vol., 50, 1684 ; vol., 50, 4444.

evaporation, 50, 5964. ferro-. See Ferro-chromium. hardness, 50, 674 ; as determined by

Vickers-Brinell, Biorbaum and Molis methods, 50, 3384, 7224.

melting point, 50, 7284.

810 Subject IndexChromium,

passivity, 50, 4954, 782.1.-plated cooking utensils, action of fruit

juicos, 50, 3764.-plated gauges, grinding, 50, 5794. -plated paper mill equipment, advan

tages, 50, 183.4.-plated wood planer knives, 50, 508.4. poisoning, 50, 400.1. review, 50, 690.*1, 719.4. separation from iron and nickel, 50,

1074 ; o f vanadium, 50, 3114. thermal expansion of olectrolytic, 50,

140.4. uses, 50, 3764.

Chromium alloys (see also Ascafoy, Enduro, &c.),

corrosion by milk, 50, 3024. solid solutions, dilute, magnotio pro

perties, 50, 6054. welding, 50, 1134.

Chromium-aluminium alloys, 50, 2944. casting, 50, 2944. corrosion by soa-wator, 50, 6004. properties, 50, 2944.

Chromium-aluminium-iron alloys, constitution, 50, 000.4 .

Chromium-carbon alloys, constitution, 50, 7284.

Chromium chloride, oloctrolysis, 50, 0304.Chromium-cobalt alloys, equilibrium

diagram, 50, 1514.Chromium-cobalt-tungsten alloys. Soo

Stellilc.Chromium-iron alloys (see also F er re -

chromium ), constitution, 50, 134, 3494, 5364. deposition, 50, 904. lattice constants, 50, 105.4. mechanical properties, 50, 3494. report ol A.S.T.M. cttoo., 50, 2054,

4754.thermal expansion, 50, 155.4. x-ray investigation, 50, 134, 1044,

349.1.Chromium-iron-carbon alloys, constitu

tion, 50, 7284.Chromium-nickel alloys (seo also Vicro-

metal), bibliography, 50, 4754. constitution, 50, 184. corrosion by milk, 50, 3024. corrosion-resistance, to gases, 50, 4304 ;

to gases, effect o f addn. of aluminium, 50, 436.1.

electrical resistors for high temp.service, 50, 6004.

ferromagnetism, 50, 7334. fogging, freedom from, 48, 123, 138. for electrical heating elements, drawn

or rolled, A.S.T.M. tentative specifications, 50, 1074, 4224.

manufacture, 50, 1554. melting by use of hydrogen gas, 50,

5084.properties, 50, 298.1, 4754. thermal expansion, 50, 1554. uses, 50, 2984. valve seatings, 50, 692.1. welding, 50, 544 , 3844.

Chromium-nickel-iron alloys, constitution, 50, 184. corrosion by milk, offects of operating

conditions in various parts of pasteurizing oquipmont, 50, 4354.

dilatometric study, 50, 134 , 3494. electrical resistors for high tomp.

sorvico, 50, 006.4. for clectrical heating elements, drawn

or rolled, A.S.T.M. tentative specifications, 50, 1074 , 4224.

properties, 50, 2984 , 4754 ; effect of temp., 50, 5404 , 5414.

report of A.S.T.M. ctteo., 50, 2954, 4754.

thermal expansion, 50, 1554. uses, 50, 2984.

Chromium-nickel-iron-carbon alloys, constitution, 50, 774 , 2954.

Chromium-platinum alloys, ferromagnetic, 50, 5424.

Chromprotekt, 50, 0814.Cider, action on Monol metal, 50, 3034.Cilum process, for protection of aluminium

alloys, 50, 1024.Clays. Soo Refractory materials.Cleaning (soo also Degreasing),

50, 5054, 5784. book, 50, 0544 (review).Bullard-Dunn process, 50, 1214. chemical reactions, 50, 7064. electrochemical, Bullard-Dunn process,

50, 7084.electrolytic, 50, 3284 ; unusual appns.,

50, 3284.equipment, 50, 7074 ; heat lossos, 50,

1924.lor enamelling, 50, 1924. materials, effect of impurities, 50, 1214. new process, 50, 7074. solutions, alkali, 50, 5054 ; buffer

action, 50, 7074 ; dotn. of conductivity, 50, 3284 ; hoavy-duty, 50, 707A ; maintenance and life, 50, 1214.

tanks, construction, 50, 1214 ; lining, 50, 484.

Cleaning of—Castings, 50, 1284, 2634.

Cleanliness, tests, 50, 7064.Clips, bonding, dies for, 50, 7674.Coal(s) (see also Fuels),

analysis, 50, 3954 ; rational, 50, 3944. breakage, prevention, 50, 2724. classification, 50, 6444. examination, 50, 3944. heat value, calculation, 50, 7774. nomenclature, 50, 644.1. pulverized, appn. to metallurgical in

dustries, 50, 2 7 1 4 ; firing, book, 50, 7834 ; firing, Gyro systom, 50, 2724 ; indust. appn., 50, 2724 ; progress, 50, 3944 ; standardization of installations for non-ferrous plants, 50, 269.1 ; uso in Canadian nickel smelter, 50, 2724.

report of A.S.T.M. cttoo., 50, 3954, 5124.

sampling, 50, 2724, 3944. standardization, progress, 50, 6444.

Subject Index 811Coal(s),

terms relating to, tentative revisions of A.S.T.M. standard definitions, 50, 273/1.

volatile matter, dotn., 50, 273.-1.Coating ot metals. Soo Deposition, Gal

vanizing, Spraying, Tinning, &c.Coatings. Seo Deposits.Cobalt,

allotropie transformation, mechanism, 50, (315/1.

allotropy, 50, 210.1. bibliography, 50, 640/1.Chemistry, books, 50, 410.-1 (review),

525/1.Crystal structure o f olectro-deposits,

effect of H-ion concn., 50, 031/1. crystals, mosaic structure, 50, 745/1. deposition, offoct o f H-ion concn. on

crystal structure o f deposits, 50, 631/1. deposits (electro-), crystal structure,

infiuonco of H-ion concn., 50, 631/1. detection, 50, 365/1 ; in prosonco of

elomonts of Group III, 50, 166/1. diffraction patterns, 50, 747/1. electrical resistance,change under hydro

static prossuro, 50, 422/1. electrode potential, 50, 684/1. estimation, as sulphide, 50, 39/1 ; colori

metric, alono and in prosenco of nickel, 50, 88/1 ; oloctrolytic, 50, 88/1 ; gravimetric, 50, 554/1 ; in ammoniacal soin., microoloctrolytic, 50, 443/1 ; quant., by filtration method, 50, 620/1 ; uso of zinc oxido, 50, 88/1.

films, electro-deposited, magnotio properties, 50, 594.-1 ; eloctrodeposition, 50, 565/1.

imports and exports, 50, 640/1. magnetic properties at high temps.,

50, 595/1.magnetic susceptibility in tetravalont

form, 50, 146/1. magnetization of single crystals at high

temps., 50, 146.4. metallurgy, 50, 640/1. occurrence, 50, 640/1. ores, discovery in Westphalia, 50, 276A . photoelectric emission, 50, 21 C oproduction, 50, 640/1. separation, 50, 620/1. single crystals, magnetization at high

temps., 50, 1-4, 146/1. specific heat, dependonco on temp., 50,

726/1.tetravalent, magnotic moment, 50, 146/1. thermionic emission, 50, 210/1. transformation, 50, 338.4. uses, 50, 376/1, 640/1. valence, book, 50, 652/1.

Cobalt-aluminium alloys, equilibrium diagram, 50, 224/1. equilibrium relations, 50, 221/1.

Cobalt-carbon alloys, equilibrium diagram, 50, 224.-1. shrinkage on solidification, 50, 226/1.

Cobalt-chromium alloys, equilibrium diagram, 50, 151/4.

Cobalt-chromium-tungsten alloys. See Stellite.

Cobalt-iron alloys, equilibrium diagram, 50, 224.4. Joule magnetostrictive effect in rods, 50,

729/1. magnetic properties at high temps., 50,

595/1. Cobalt-manganese alloys, equilib. diagr.,

50, 224.4. Cobalt-nickel alloys,

deposition, 50, 176.4. equilibrium diagram, 50, 224.4.

Cobalt-nickel-iron alloys (soo also Per- minvar),

mechanical properties at high tomps., 50, 18/i, 79/1.

Cobalt sulphate, transference numbor, 50, 453/1.

Cobalt-tungsten alloys, age-hardening, 50, 601.-1. constitution, 50, 601.-1.

Coffee, action on motals, 50, 740.4.Cohesion, 50, 617/1.

determination, 50, 754/1. theory, mathematical, 50, 467/1.

Coinage,Chinese, anciont, analyses, 50, 152/1. silver. Soo Silver alloys.

Coke (soo also Fuels),breakage, prevention, 50, 272.4. definition, 50, 512.1. examination, 50, 394/1. heat value, calculation, 50, 777.4. metallurgical, possibility of manuf. from

Rumanian coal, 50, 777.4. removal of sulphur, 50, 643.4. report of A.S.T.M. cttee., 50, 395.4,512/1. sampling, 50, 394.4, 512.4. standardization, progress, 50, 644.4. terms relating to, tentative revisions of

A.S.T.M. standard definitions, 50, 273/1.

Cold-drawn metals, innor tensions, detection and calculation, 50, 327/1, 387/1.

Cold-drawn tubes, structure, 50, 191/1.Cold-drawn wire, lattico distortion, 50,

191/1.Cold-heading, materials, 50, 259.4.Cold-rolled metals,

bending qualities, relation of crystal orientation, 50, 735/1.

internal stress, 50, 729*4. lattice distortion and orientation, 50,

672.4.Cold-rolling,

modern standards, 50, 189.4. strengthening by, 50, 6.4.

Cold-rolling of—Constantan, rate o f prodn. of lattico

distortion and preferred orientation, 50, 672/1.

Copper, rate of prodn. of lattice distortion and preferred orientation, 50,672.4.

Mumetal, rato of prodn. o f lattico distortion and preferred orientation, 50,672.1.

Nickel, rato of prodn. of lattice distortion and preferred orientation, 50, 672/1.

Strip, Steckol process, 50, 189/1.

812 Subject IndexCold-work,

effect of magnetic susceptibility, 50, 1164, 1504.

effect on properties, 50, 74 , effect o£ specific heat, 50, 8.-1 . recovery from, estimated according to

change in hardness and rate of dissoln., 50, 5 9 7 4 ; on annealing, 50, 7254.

Cold-worked metals and alloys, tensilo properties, calculation from Brinell hardness, 50, 64.

Cold-working, hooks, 50, 2834, 4134 (review).

Colouring, 50, 3284. black oxidized finish, 50, 7054. book, 50, 4094 (review). old-silver finish, 50, 1204. oxidized silver finish, 50, 1204.

Colouring of—Aluminium and its alloys, 50, 120/1,

2624, 3604 ; Alumilito process, 50, 2624 ; by plating, dyeing and oxidizing, 50, 5774 ; foils, 50, 1924 ; Metso, 50, 7064 ; Sheppard process, 50, 5774.

Brass, brown, 50, 2624.Cadmium doposits, 50, 192-1, 5044,

7064.Copper, 50, 4394, 5 7 74 ; brown, 50,

2024.Copper alloys, researches on potassium

permanganate-copper sulphate pickle, 50, 7064.

Foils, 50, 1924.Gold, 50, 5044.Iron, 50, 5044.Protective coatings on aluminium and

its alloys, 50, 1924,Silver, 50, 5044.Steel, 50, 5044.Tin foils, 50, 1924.Tin-lead foils, 50, 1924.

Columbium,analysis, spectroscopic, cathode-ray

method, 50, 2404. atomic weight, 50, 5964. lattice constants, 50, 1654. separation of tin, 50, 3664. uses, 50, 4984.

Compounds, intermetallic. See TnUrmctal- lic compounds.

Compressibility, coefficient, calcn. of characteristic frequency from, 50, 714.

Compressibility of—Lead at elevated temperatures, effoct

o f small % of certain metals, 50, 4664.

Compression fittings, 50, 1094. Compression fluidity, 48, 48, 59. Compression strength of—

Elektron, 50, 1544.Concrete,

corrosion of metals by, 50, 1614. spraying with metals, 50, 3234.

Condenser tubes,Admiralty, seamless, revisions of

A.S.T.M. standard specifications, 50, 3214.

Condenser tubes, aluminium-brass. Seo Aluminium -

brass. brass. Seo Brasses.corrosion, 50, 1604, 1834, 3004 , 3044,

3774, 7384. for steam turbines, alloys for, 50, 3774. internal surfaces, instrument for in

spection, 50, 6794.Muntz metal. See M uniz metal. protection, 50, 3004.

Conductivity, electrical. Seo Electrical conductivity. super-. Seo Supercoiuluctivity. thermal. See Thermal conductivity.

Conductors. Seo Cables.Constantan,

casting, failures, 50, 4734. cold-rolling, rate of prodn. of lattico

distortion and profcrrod orientation, 50, 6724.

electrical properties, 50, 4734. electrical resistance, change with temp.,

A.S.T.M. tost for dotn., 50, 914. manufacture, 50, 4734. mechanical properties, 50, 4734. melting, 50, 4734.photoelectric efficiency in extreme ultra

violet, 50. 2214. rolling, 50, 4734.wire, cold-drawn, lattico distortion, 50,

1914 ; stretched, crystal lattico distortion, 50, 6174.

wire-drawing, 50, 4734.Constructal,

chemical properties, 50, 2234. elastic properties, offcct of tomp., 48,

255. physical properties, 50, 2234. workshop practice, recommendations,

50, 2234.Contact e.m.f. between metals, 50, 724.Contact potential differences, moasuroment,

50, 5984.Contact-resistance between super- and

non-superconductors, 50, 3444.Contacts,

between metal and semi-conductor,oloct. and photoolect. properties, 50, 2934.

electrical, metal transfer in, 50, 6044. with very thin film of impurity, 50,

6254. Contracid, 50, 1854.Contraction. Seo Volume changcs.Copper,

action in glass tanks, 50, 1834. action of beer, 50, 6094. action of coffee, 50, 7404. action of tea, 50, 7404. analysis, book, 50, 594. ancient, Chineso soismoscopo, 50, 5204 ;

from Ur, 50, 5204 ; from Zimbabwe ruins, 50, 5 2 0 4 ; Sumerian bar in British Museum, 50, 649/1, 6574.

annealing, bright-, 50, 5 7 0 4 ; bright-, in olect. fumaco, 50, 6944 ; of cold- worked, variation of dimensions produced, 50, 3234 ; of wire, fundamentals, 50, 534.

Subject Index 813Copper,

annealing furnaces, bright-, gas-fired, 50, 5824, 7704.

anodic polarization in aqueous solns., 50, 0104.

arsenical, creep tests at 300° and 350° C.,48, 89 ; tensile and compression tests under short-time loading, 48, 69.

atomic heat, 50, 2164. bars, for windings of olect. machines,

British Standard specifications, 50, 3334, 3674.

bismuthiferous, properties, 50, 2894. black brittleness, 49, 244, 245, 240. blister, refining, removal of antimony,

50, 2044. boilers, 50, 3234. book, 50, 614.brazing of water tanks, 50, 3834. brewing vessels, cleaning, warning

against use of antiseptics, 50, 5474 ; corrosion, 50, 274.

brittleness, 48, 311. burnishing, 50, 5774. bus-bars, joining, 50, 1104. cast, report o f A.S.T.M. cttoe., 50,

3214, 4974. casting of tougli-pitch, 50, 1254. castings, dogassing by lithium, 50, 5944. cathode, linear rate of crystn. in electro

lysis of copper sulphate, 50, 6364. characteristic frequency, 50, 714. chromium-plated, corrosion by milk, 50,

3024.cold-heading, 50, 2594. cold-rolled plates, internal stress, 50,

7294.cold-rolling, preferred orientation pro

duced by, 50, 1644 ; rato of prodn. of lattico distortion and preferrod orientation, 50, 6724.

cold-worked, hardness, 50, 4 6 54 ;lattico arrangement, 48, 328; variation o f dimensions produced by annealing, 50, 3234.

colouring, 50, 4394, 5774 ; brown, 50, 2624.

commercial, properties at high tomps.,49, 237 (Paper).

commutator bars, for oloct. purposes, British Standard specification, 50, 3334, 3764.

compression fluidity, 48, 48, 56. compression tests undor short-time

loading, 48, 69. consumption, 50, 3764. contamination of water, 50, 3554. corrosion, 50, 254 , 4344 ; atmospheric,

50, 2 8 4 ; atmospheric, artificialprodn. of green patina, 49, 153(P aper) ; atmospheric, rapid development o f patina, 50, 6664 ; by alkaline solns., 50, 4364 ; by boor, 50, 2294 ; by distilled water and salt solns., prevention by addn. of sodium dichromate, 50, 3584 ; by hot vapours of cracked petrol, 50, 2 3 04 ; by hydrochloric acid, 50, 4 3 4 4 ; by inorganic acids, 50, 6084 ; by milk, 50, 254, 3 0 24 ; by milk, effects of

Copper,operating conditions in various parts of pasteurizing oquipment, 50, 4354 ; by petrol and motor benzines, 50, 5444 ; by phosphoric acid, 50, 4344 ; by sea-water, 48, 109; by sea-water, effect of arsenic, 48, 113, 119; by sulphuric acid, 50, 4344 ; by vinogar, 50, 6674 ; by well water, 50, 3554 ; influence of foreign motals on rato of dissoln., 50, 7404 ; of brewery plant, 50, 274 ; of pipes, olectrolytic, 50, 3554 ; of singlo crystals, velocity of dissoln. o f different faoos, 50, 3014 ; of tinned and soldered shoots, atmospheric, 50, 3554, 66 64 ; open-valloy flashings, 50, 6084.

corrosion-fatigue, 50, 424. cracking of sheet in hot-bonding tests,

50, 3384.creep tests at 300° C. and 350° C., 48,

89 (Paper). crystals, mosaic, 50, 67 14 ; prodn. of

specific tensions by stretching, 50, 2914.

deformation, speed in relation to, 50, 5744.

deformed, softoning, 50, 64. degassing by lithium, 50, 5944. density, effect of torsion, 50, 6594. deoxidation, 50, 5 9 44 ; with beryllium,

50, 5804 ; with calcium, zinc, beryllium, barium, strontium, and lithium, 50, 5804, 7714.

deposition, control of cyanide baths, 50, 964, 2474 ; dotn. of copper in solns., 50, 994 ; detn. of thickness of deposits by nomograms, 50, 6824; from cyanide solns., 50, 6314 ; in form of shoot, 50, 6314 ; in form of tubos, 50, 6314 ; in presenco of gum arabic, 50, 6824 ; tensions of deposits, 50, 4514 ; throwing power o f solns., 50, 6824.

deposits, arrangement of micro-crystals, 50, 6164 ; producod in presenco of gelatine, crystal structure, 50, 864 ; producod in presence of gum arabic, growth of electrolytic striations, 50, 6824.

diffusion into gold, rate, 50, 3394. diffusion of cadmium, 50, 4704. early metallurgy, 50, 7804. effect of arsenic, 50, 4004. effect of cadmium, 50, 4724. effect of lithium, 50, 5944. electrical conductivity, 50, 6584. electrical resistance, change under hydro

static pressure, 50, 4224 ; effect of torsion, 50, 6594 ; o f crystals at temps, below 90® K,, 50, 7264 ; of molten, 50, 1524.

electrolysis at Tin Works Wilhehns- burgh G.m.b.H., 50, 1004.

electrolytic extraction from low-grado materials, 50, 4944.

embrittlement, 50, 7224. enamelling of wire, 50, 2364, 7024 ;

of wire, influence of nature of copper, 50, 2364.

814 Subject IndexCopper,

endurance, 50, 558A . endurance bending strength of hard-

drawn wires, 50, 2894. endurance tests at 20° C., 49, 239; at

elevated temps., 49, 240.Erichsen value, effect of rolling, 50,

694.estimation, by fluoride-iodido method,

50, 4 4 24 ; colorimetric, appn. of piperidinium, 50, 4 4 24 ; in am-moniacal soln., microelectrolytic, 50, 4 4 2 4 ; in copper-zinc alloys, 50, 16 84 ; in plating solns., 50*, 9 9 4 ; in presence of iron, with salicylald- oximo, 50, 4424 ; in steel, 50, 394 ; micro-, appn. o f Spacu’s reaction, 50, 6754.

estimation of antimony, 50, 1674 ;(small amts.), 50, 6744.

estimation of cadmium, 50, 4884. estimation of iron (small amts.), 50,

6754.fatigue, 49, 107 ; tests in shear, 50,2114. films, elect, properties, 50, 3434 ;

electrodoposition, 50, 5654 ; registration of cathodo rays, 50, 2924.

flow, pressure-, at low temps., 50, 2914. fluidity, pressure of, 48, 53.“ frictional oxidation,5* 50, 5294. hard-drawn, soldering, 50, 1464. hardening by hammering, 50, 1104. hardness, at high temps., 49, 244;

change caused by bending, 50, 6594 ; effect of cold-rolling, 50, 64 ; effect o f rolling, 50, 694 ; increase by heavy cold-working, 48, 52; of annealed, 50, 2114 ; of cold-worked, 50, 4654 ; relationship between ball and cone tests, 50, 4654.

heat-transfer to, in annealing furnaces, 50, 4564.

Heddernheim Works, Frankfurt, 50, 7804.

high-conductivity, prodn., 50, 1464; tensile and compression tests under short-time loading, 48, 69.

hydrogen sickness, 50, 7224. impact strength, notched-bar, 50, 4654. impact tests at high temps., 49, 242. in antiquity, 50, 4974. indentation fluidity, 48, 49. industry, future, 50, 7804. lattice parameters, 50, 3624. lead-coated, use in architecture, 50,

3794.loco, firebox plate, brittleness, 50, 7234. loco, firebox stays, two-diameter, prodn.

at one operation, 50, 5034. loco, firebox stays and plates, experiences

in England and Germany, 50, 674. loco, fireboxes, welding, oxy-acetylene,

50, 1124.loco, tube plates, welding, oxy »acetylene,

50, 1124.magnetic susceptibility, effect of cold-

work, 50, 7 6 4 ; effect of plastic deformation, 50, 6604.

mechanical properties, 50, 2104, 4 6 54 ; effect of cadmium, 50, 4724.

Copper,melting, for thick castings, 50, 2644,

7 7 2 4 ; of scrap, &c., see Copper, rem elting ; use o f iron and steel in mills, 50, 3314.

melting furnaces, elect., experiences, 50, 1314.

metallurgy, book, 50, 6 1 4 ; developments, 50, 5194.

micro-crystals, electrodeposited, arrangement, 50, 6164.

mineral resources, of California and Oregon, U.S.A., 50, 1344 ; of eastern states of U.S.A., 50, 134*4 ; of Idaho and Washington, U.S.A., 50, 134/1; o f Nevada, U.S.A., 50, 5 8 8 4 ; of Utah, U.S.A., 50, 1344 ; of U.S.A., 50, 1354.

molten, elect, resistance, 50, 1524. native, arsenic in, 50, 4004. optical constants, variations, 50, 4174. oxidation, by nitric acid, hydrazine as

retarding agent, 50, 1494 ; in liquids, 50, 7384.

painting, 50, 4394.patina, artificial, prodn., 49, 153; 50,

3884, 6664. permeability to X-rays, 50, 6804. pipes, heat transmission to liquids

flowing in, 50, 6 9 0 4 ; use for water supply, 50, 3214.

plastic distortion, 50, 2154. polishing, pastes, 50, 5794. positive ion emission, 50, 764, 2194. production, of world in 1930, 50, 1834;

statistics, 50, 3764. properties, at elevated temps., 50, 5294 ;

in relation to low stresses, 48, 69 (Paper), 89 (Paper).

protection against scaling at high temps., Alitieren process, 50, 2 3 4 4 ; with lanoline, 49, 155.

refinery slimes, detn. of silver, 50, 2414.

refining, by series system, 50, 63 54 ; developments, 50, 5 1 9 4 ; electro., 50, 3174, 4944 ; electro-, development at Norddeutsche Afifinerie, Hamburg, 50, 4524, 6 8 44 ; electro-, formation of anode slimes, 50, 2514 ; o f blister, removal of antimony, 50, 2 0 44 ; o f native, in reverberatory furnace, elimination of arsenic, 50, 4004 ; recovery of precious metals, 50, 3724, 6844 ; removal of selenium and tellurium, 50, 6364 ; statistics, 50, 3 7 64 ; with complex salts of cuprous chloride, behaviour of antimony, 50, 2504.

refining baths, estn. of antimony, 50, 1674.

refining furnaces, comparison of fuels, 50, 3934 ; use o f magnesite bricks, 50, 1994.

remelting of scrap, 50, 2644, 7724. resistance to repeated stresses, 50, 6794. rigidity, 50, 3 3 9 4 ; modulus, ehango

due to cold-working, 50, 2164. riveting, countersunk, 50, 3824. rods, for windings o f elect, machines,

Subject Index 815Copper,

British Standard specification, 50, 3334, 376/1.

rolling, effect of Erichsen value and hardness, 50, 69.1.

rolling mills, wire, experiences in planning, 50, 5034.

rolling texture, relation to deep drawing properties and hardness, 50, 694.

roofing, patina on, 49, 161. sand-cast of highest conductivity de

oxidized with beryllium, 50, 5804. sawing, 50, 1184. scrap, remelting, 50, 264/1, 7724. separation, from cadmium, 50, 3664 ;

from lead, electrolytic, 50, 6314; from zinc, 50, 1684 ; in presence of aluminium by 8-hydroxyquinoline, appn. to aluminium alloys, 50, 6194.

sheets, cracking in hot-bending tests, 50, 3384 ; cutting, use of compressed nitrogen, 50, 575/1; direct prcdn. by electrolytic process, 50, 631/1; preferred orientation produced by cold- rolling, 50, 164/1; soldered andtinned, accelerated weathering tests, pamphlet, 50, 4 5 8 4 ; tinned and soldered, accelerated weathering tests, 50, 3554, 6664.

shot, prodn., for blue vitriol manuf., 50, 5684.

silver-, tensile and compression tests under short-time loading, 48, 69.

silver-arsenical-, creep tests at 300° and 350° C., 48, 89 ; tensile and com pression tests under short-time loading, 48, 69.

single-crystals, detn. of velocity of dissoln. o f different faces, 50, 3014 ; diffraction o f electrons, 50, 38/1 ; diffraction o f Iow-speed electrons, 50, 6164 ; sclerometric hardness, decrease due to adsorption of active substances at surface o f contact, 50, 5 4 ; solution velocities on different faces, 50, 3394.

soldering, of hard-drawn, 50, 1464;o f tubes, 50, 4994.

solubility in milk, 50, 254. sorption of gases, 50, 4174, 658.4. sorption of hydrogen, 50, 14. specific heat, effect o f cold-work, 50, 84. statistics, 50, 3764.steam pipe, main, explosion as result

of corrosion, 50, 7384. strain figures on surface, new method

to obtain, 50, 1474. strengthening on cold-rolling, 50, 64 . strip, bars and rods, for windings o f elect,

machines, British Standard specifications, 50, 3764 ; plain dead-soft, for windings of elect, machines, British Standard specification, 50, 3334.

sulphide films, 50, 1504.Sumerian, nickel in, 48, 105. supercooling, 50, 1464. tariffs, pamphlet, 50, 1364. tensile properties, as function of temp.,

50, 2104 ; effect of cold-rolling, 50, 64 ; in gaseous media, 50, 2104;

Copper,of rods at low temps., 50, 4314 ; of transmission cables, effect of short circuit currents, 50, 654.

tensile stresses in, dependence on rato of strain, 50, 291/1.

tensile tests under short-time loading,48, 69.

tin-plated, corrosion by milk, 50, 3024. tin-silicon-, tensile and compression

tests under short-tame loading, 48, 69. torsion, effect on density, dimensions

and elect, resistance, 50, 6594. tough-pitch, casting, 50, 1254. transmission lines, overhead, suitability,

50, 320/1 ; tensile properties, 50, 6574 ; tensile strength, effect of short circuit currents, 50, 654.

tubes, direct prodn. by electrolytic process, 50, Ô314 ; flexible, manuf., 50, 1914 , 32 74 ; for domestic water pipes, 50, 4554 ; for water pipes, 50, 1054 ; in domestic water supply, 50, 6904 ; in domestic water supply, fitting and bending, 50, 378/1 ; production, 50, 554 ; use in water services, 50, 5684, 5694.

uses, for fireplace hoods, 50, 3784 ; for roof gutters, 50, 3794 ; for street ornaments, &c., 50, 3784 ; in buildings, 50, 455/1 ; in construction work, 50, 4974 ; in food industries, 50, 3784 ; in mixing machines, 50, 455/1 ; in musical instruments, 50, 4974, 5694 ; in railroad electrification, 50, 3774 ; in sugar and confectionery industries, 50, 5694 ; in telegraphy, telephony, and television, 50, 3774 ; in transport, 50, 5684.

valence, book, 50, 6524. varnishing, 50, 4394. veining or sub-boundary structures, 50,

6144.water-pipe, behaviour in service, 50,

1064.welding, 50, 5014 ; arc-, experiences,

50, 257/1 ; autogenous, 50, 2574, 6974 ; bronze-, in acetic acid plant, 50, 1884 ; gas-, effect of small ad dus. in welding rods, 50, 1874 ; o f boiling pans, 50, 1124 ; of brewery plant, oxy-acetylene, 50, 6974 ; of ehem. apparatus, 50, 2574 ; o f loco, firebox plates, autogenous, 50, 5004 ; o f loco, fireboxes, 50, 2574 , 6974 ; o f loco, fireboxes, oxy-acetylene, 50, 383/1, 384/1, 5004 ; of loco-tube plates and fire-boxes, oxy-acetylene, 50, 1124; of pipe, oxy-acetylene, 50, 1124 ; of refinery stills, 50, 544, 3834, 7 6 54 ; o f sheet, 50, 1884; of sheet, oxy-acetylene, 50, 7654 ; of very thin sheet articles, 50, 3834 ; o f wire, butt-, machine, 50, 5014 ; oxy-acetylene, 50, 4594, 5014 : oxy- acetylene, practical hints, 50, 1874 ; practice, review, 50, 1124; Premag process, 50, 6974.

wire, annealing, fundamentals, 50, 534 ; bending capacity, 50, 4314 ;

816 Subject Index

Copper,brittle, masked hydrogen sickness, 50, 722/1; effect of cold-stretching on plasticity at elevated temps., 50, 150/1; elastic oxtension under longitudinal stress, 50, 704 ; enamelled, removal of enamol, 50, 648/1;enamelling, 50, 236/1, 702/1; for weaving, manuf., 50, 573/1 ; hard- drawn, for overhead trolloy purposos, field tests, 50, 377/1 ; influence of nature of copper, 50, 236/1; report of A.S.T.M. cttco., 50, 497.4 ; rolling mills, experiences in planning, 50, 503/1; stretched, crystal lattice distortion, 50, 617/1.

wire-bars, macrostructuro, factors controlling, 50, 5524.

wire-drawing, distortion of wires on passing through draw-plate, 49, 187 (P aper) ; force relations, 50, 259.4 ; prodn. o f bright soft wire, 50, 386/4.

wrought, report of A.S.T.M. cttoo., 50, 321/1, 497/1.

Copper alloys (see also Alumbro, Am brac, 4m6ro, Avialitc, Babbitt metal, Batter- turn, Bearing alloys, Brass, Brastil, Bronze, Corronil, Everdur, Gun-metal, Manganese-brass, M untz metal, P .M .G . metal, Silveroid, Waukesha metal, &c.),

analysis, 50, 364/1. annealing, bright-, 50, 570/4. bearings, compn., 50, 428/1. cast, report of A.S.T.M. cttee., 50,

321/1, 497/1. colouring, researches on potassium

pcrmanganato-copper sulphate pickle, 50, 706/1.

corrosion, 50, 25.4, 355/1; by bleaching liquors in textile industry, 50, 435/1 ; by milk, 50, 302/1; by phosphoric acid, 50, 436/1; by sea-water, 50, 479/1.

creep resistance, dependonco on rocrystn. temp., 50, 530/4; effect of tin, 50, 530A .

estimation of antimony (small amts.), 50, 674A .

high-quality, manuf., 50, 730/1. in antiquity, 50, 497/1. industrial, properties, 50, 152.4. ingots, for sand-castings, A.S.T.M.

tentativo specifications, 50, 255/1, 321/1.

molten, elect, resistance, 50, 152/1. oxidation in liquids, 50, 738/1. principal, list, 50, 376/1. properties at olovated temps., 50, 529/1. protection against scaling at high temps.,

Alitieren process, 50, 234/1. resistance to repeated stresses, 50, 679.4. use, in buildings, 50, 455/1; in industry,

50, 568.4 ; in marine construction, 50, 183.4 ; in sugar and confectionery industries, 50, 569.4.

wire-cloth, 50, 4554. wrought, report o f A.S.T.M. cttee., 50,

3214, 497A . x-ray spectra of compounds, effect of

chem. compn., 50, 34.4.

Copper-aluminium alloys (see also Avialitc), age-hardened, X-ray examination, 48,

202.age-hardening, 48, 197 ; effect of iron,

48, 200, 213, 219. a solid solution, solidification, 50, 159/1. casting, 50, 294/1 ; offoct of modifiers,

50, 330/1. constitution, X -ray study, 50, 344. crystal structure, 50, 344. effect of vanadium, 50, 472/1. electrical conductivity, 50, 104. eutectoid, tempering and annealing, 50,

256.1.hardeners, prepn , 50, 389/1. improvement, recent work, 50, 12/1. inverse segregation, 50, 4714.Lorenz number, 50, 10.4. modification, 50, 330/1. properties, 50, 2944. sand-castings, stress-elongation, stross-


solid solution, suporsaturatod, kinetics of decompn., 50, 4864.

solution-potential, effoct of hoat-treatmont temp., 50, 3544.

thermal conductivity, 48, 37 ; 50, 10/1. Widmanstatten structure, 50, 4854. wire, elect, conductivity, offoct of mecli.

and thermal treatment, 50, 2944 ; tensile strength, effoct of moch. and thermal treatment, 50, 294/1.

Copper-aluminium-silicon alloys, mechanical properties, 50, 222/1, 2814. physico-chemical investigation, 50, 6614. preparation, 50, 2224, 2814. wire, elect, conductivity, offoct of moch.

and thermal treatment, 50, 294/1 ; tensile strength, effoct of moch. and thermal treatment, 50, 2944.

Copper amalgam, prepn., 50, 6634.Copper-antimony alloys,

cathodic sputtering, 50, 354/1. constitution, 50, 4304.

Copper-arsenic alloys, thermal conductivity, 48, 37.

Copper-beryllium alloys, bibliography, 50, 2244. constitution, 50, 002/1, 729/1. effect of cold-work, 50, 2244. eutectoid, tempering and annealing, 50,

2564.improvement, recent work, 50, 124. preparation, 50, 5364. properties on age-hardoning after

quenching, 50, 2244. recent work, roviow, 50, 144. uses, 50, 5364.

Copper-beryllium “ bronzes.” See C opper- beryllium alloys.

Copper-cadmium alloys, corrosion of wire, 50, 4794. density, 50, 1524. electrical resistance, 50, 152/1 ; temp.

coeff., 50, 1524.Hall effect, 50, 1524. specific heat, 50, 1524. thermoelectric power, 50, 1524. wire, hard-drawn, for overhead trolley

Subject Index 817Copper-cadmium alloys,

purposes, field tests, 50, 377.4 ;innmif. nnd properties, 50, 472.4.

Copper-cadmium-zinc alloys, deposition from cyanido batlis, 50, 247/1.

Copper-gold alloys, action oi nitric acid, 50, 739.4. action of sulphuric acid, 50, 739/1. atomic susceptibility curves, deviation

from theoretical curves, 50, 37.4. constitution, 50, 72Q.4, 730/1 ; thermo

dynamic study, 50, 729/1. elastic limit, 50, 474.4. equilibrium diagram, 50, 476.4. films, lattico parameter, 50, 16/1. hardness, 50, 474.4. improvement, rocent work, 50, 12A . lattice constants, 50, 10.4. phase equilibrium conditions, equations,

50, 353/1.single crystals, action of reagents,

X-ray study. 50, 355.4, 480/1. solid solutions, physico-chemical study,

48, 312.transformations in solid state, 50 730.4.

Copper-gold-silver alloys, oquilib. diagr., 50, 470/1.

Copper-iron alloys, thermal conductivity, 48, 37. thermoelectric force down to vory low

temps., 50, 422/1.Copper-lanthanum alloys, constitution, 50,

153/1.Copper-lead alloys,

for bearings, 50, G40/1. mlscibility gap, 50, 10/1. separation of 2 phases on cooling, 50,

77/1, 152/1.Copper-magnesium alloys,

age-hardening, 48, 2 0 2 . chemical properties, 50, 004/1. electrical conductivity, 50, 10.1. equilibrium diagram, 50, 604/1. heat-treatment, 50, 004/1.Lorenz number, 50, 10/1. magnesium-rich, constitution, 50, 429.4. physical properties, 50, 604/1. thermal conductivity, 50, 10/1.

Copper-magnesium-aluminium alloys, constitution, 50, 062/1. corrosion by three types of corroding

media, 50, 480.4. equilibrium relations, 50, 222/1.

Copper-magnesium silicide —aluminium alloys, equilibrium relations, 50, 222/1.

Copper manganese-aluminium alloys. See H cusler’s alloys.

Copper-nickel alloys, casting, 50, 125A . cathodic sputtering, 50, 354.1. complex, properties, 50, 541.4. condensers, surface-, construction, 50,

690/1.containing tin and silicon used for steam

valves, properties, 50, 541.4. corrosion, by phosphoric acid, 50, 436.4 ;

by soa-water, 48, 109. - corrosion-fatigue, influence o f chem.

compn. and heat-treatment on resistance to, 49, 38.

VOL. L.

Copper-nickel alloys, corrosion-resistance to gases, 50, 430/1. creep, efleet of rocrystn. temp, and

grain-sizo, 50, 432/1, 605.4. deoxidation, 50, 537/1. diffusion coefficient, influence of temps.,

50, 291/1. effect of silicon, 50, 661/1. fatigue, 49, 107. fogging, 48, 122. magnetic susceptibility, 50, 18/1. manufacture, 50, 537/1. mechanical properties, roview, 50, 537.1. melting, 50, 125A.physical properties, roview, 50, 537/1. physico-chemical properties, roview, 50,

537/1.properties, 50, 77/1, 183.4; at low

temps., 50, 19/1. rolling, 50, 537/1. thermal conductivity, 48, 37. thermoelectric power, variation with

temp., 50, 664.4. uses, 50, 77.4, 537/1.

Copper-nickel-iron alloys, deposition, 50, 96/1, 248/1, 682/1.

Copper-nickel-silicon alloys, copper-rich, constitution, 50, 349/1.

Copper-nickel-silver alloys, properties, 50, 476/1.

Copper-nickel-tin alloys, Admiralty, high- temp, data, 50, 541/1.

Copper-palladium alloys, equilibrium diagram, 50, 476/1. phase equilibrium conditions, equations,

50, 353/1.Copper-phosphorus alloys,

thermal conductivity, 48, 37. with high phosphorus, properties, 50,

602/1.Copper-platinum alloys, oquilib. diagr.,

50, 476/1.Copper-silicon alloys,

estimation of silicon, 50, 169/1. mechanical properties, 50, 51/1. solid solubility of silicon, 50, 349/1. solid solutions, mechanism of docompn.,

50, 744.1.wires, hard-drawn, for ovorhead trolley

purposes, fiold tests, 50, 377/1.Copper-silver alloys,

casting, 50, 266.4.constitution, 50, 351/1; thermodynamic

study, 50, 730A ; X-ray study of copper-rich alloys, 50, 35.-1.

elastic limit, 50, 351.1. electrical conductivity, 50, 351/1. electrical resistance, tomp. coeff., 50,

351/1.equilibrium diagram, 50, 476/1.Erichsen value, effect of rolling, 50, 69.4. hardness, 50, 351/1; effect of rolling,

50, 69.4.heat-treatment, effoct on mech. pro

perties, 50, 35-1/4. influence of oxygen. See S ilver-copper-

orygen alloys. inverse segregation, 50, 299-4. lattice dimensions, 50, 486.4. liquation, 49, 347 (Paper),

4 F

818 Subject Index

Copper-silver alloys,remelting, deoxidizers for, 50, 21/1. rolling, effect on Erichsen value and

hardness, 50, 69/1. rolling texture, relation to deep drawing

properties and hardness, 50, (»9-4. solid solubility of silver, 50, 486/1, 734/1. solid solutions, new orientations forming

in crystal during pptn., 50, 746/1. solubility of copper at 452° C., 50, 486/1. solubility of silver, at 452° C., 50, 486/1 ;

X -ray study, 50, 308/1.“ standard silver.” S e e Silver-copper

alloys.supersaturated, sepn. of constituents and

changes o f properties, 50, 20/1. surface improvement, 50, 328/1, 706.4. tensile properties, 50, 351.4. viscosity of molten, 50, 80/4. workability, influence of oxygen, 50,

21 / 1.Copper-silver-antimony alloys, constitu

tion, 50, 430/1.Copper-silver-manganese alloys, constitu

tion, 50, 21.1.Copper-silver^nickel-zinc alloys, liquation,

49, 353.Copper-silver-oxygen alloys,

constitution, 50, 20/1, 21/1, 606/1. quasi-binary section silver-cuprous oxide,

constitution, 50, 20/1. workability, 50, 21 A .

Copper-silver-palladium alloys, equilib. diagr., 50, 476/1.

Copper-silver-phosphorus alloys, constitution, 50, 734/1.

Copper-silver-zinc alloys, constitution, 50, 664/1.

Copper sulphate electrolytes, effect of addn. agents, 50, 252/1.

Copper sulphides, hydrogen and, thermal equilib., 50, 431 A .

Copper-tin alloys (see also Bronzes)., a solid solution, solidification, 50, 159/1. corrosion, potential measurements and

dissoln. tests, 50, 544.4. density, 50, 426/1. effect of silicon, 50, 661/1. eutectoid, tempering and annealing, 50,

256/ł.eutectoid change, mechanism, 50, 224/1. hardness, 50, 426/1.90 : 10, softening curve, 49, 263.

Copper-tin-antimony alloys, constitution,50, 662/1.

Copper-tin-lead alloys,miscibility gap, 50, 16/1. thermal expansion, 50, 729/1.

Copper-tin-zinc-lead alloys, 85 : 5 : 5 : 5, A.S.T.M. tentative recommended practice, 50, 255/1 ; thermal expansion, 50, 729A .

Copper-titanium alloys, age-hardening, pamphlet, 50, 208/1. constitution, 50, 77/1.

Copper-zinc alloys (see also Brasses, &e.), a solid solution, solidification, 50, 159/1. analysis, 50, 168/1.6-phase, transformations, X -ray study,

50, 158/i.

Copper-zinc alloys, boiling point curves, 50, 736^4. brazing solders, distillation phenomena,

50, 53/1, 500/1. constitution, X -ray detn. of phaso

boundaries, 50, 672/1. corrosion, potential measurements and

dissoln. tests, 50, 544/1. corrosion-fatigue, influence of chcm.

compn. and hcat-treatment on resistance to, 49, 38.

creep, effect of recrystn. temp, and grain- size, 50, 432A , 665A .

creep resistance, 50, 530/1. diffusion of solid, influence of temp, on

velocity, 50, 662/1. magnetic susceptibility, effect of plastic

deformation, 50, 660/1.Copper-zinc-aluminium alloys (see also

A lu minium-brasses ), constitution, 50, 225/1, 426.4, 427/1.

Copper-zinc-nickel alloys (see also N ickel- brass es),

physical properties, 50, 538/1. ranges of useful alloys, 50, 538.4.

Copper-zinc-silver alloys, review of recent investigations, 50, 227/1.

Copper-zinc-tin alloys, constitution, 50, 77/1. creep, effect of recrystn. temp, and

grain-sizo, 50, 432/1, 665/1.90 : 5 : 5, softening curves, 49, 263.

Cores,baking, gas-fired furnaco, 50, 130/1. binders, testing and evaluation, 50, 641/1. breaking out, 50, 129/1. drying, electrical, 50, 510/1. fused silica, 50, 641/1. grinding, 50, 641/1. intricate work, 50, 713/1. oils, 50, 713/4; bonding properties

destroyed by highly mineralized waters, 50, 509/1 ; suitability of soyabean oil, 50, 206/1, 775/1.

ovens, 50, 713/1; lab., 50, 509.4. preparation, 50, 129/1, 391/1. sands, testing and evaluation, 50, 641/1 ;

see also M oulding sands. sea coal-sand mixtures, effect of heat

on permeability, 50, 128/1. stove, mechanical, 50, 642/1. testing, 50, 509/1.

Coring, in alloys, 50, 159/1, 432/1.Corona effect, in cables, 50, 102/1.Corronil, corrosion by sea-water, 48, 109.Corrosion,

accelerators, 49, 57 ; 50, 545/1. atmospheric, 50, 28.4 ; prevention, 50,

28/1 ; protection against, 50, 234/1 ; report of A.S.T.M. sub-cttee., 50, 548/1.

by acids, 50, 27/1, 303/1, 358/1. by alkaline solutions, 50, 436/1. by beer, electrolytic, 50, 546/1 ; resume

of recent work, 50, 546.4. by bleaching liquors in textile industry,

50, 435.4. by brines, 50, 609/1.by chemicals used in textile mills, 50,

303/1.

Subject Index 819Corrosion,

by coffee, 50, 7404.by feed-water heater leakage, 50, 6684.by flue gases, 50, 008*1.by fruits, 50, 4354.by gases, 50, 4364.by hypochlorite, reduction by addn. of

salts and bases, 50, 6684. by inflammable liquids under storago

conditions, 50, 2314.. by iodine, 50, 3034.

by liquid fuels, 50, 7374 ; new method of test, 50, 3034.

by liquids, report of A.S.T.M. sub-ctteo., 50, 5484.

by milk, 50, 8 3 4 ; and relation to oxidized flavours of milk, 50, 3024 ; considerations governing, 50, 3024 ; effects of oporating conditions in various parts of pasteurizing equipment, 50, 4354 ; possible galvanic effects, 50, 5454, 668/1 ; submerged tests, 50, 3024.

by neutral waters, 50, 668/1. by phosphoric acid solutions, 50, 2314,

4364, 6684. by salt solutions, measurement, 50, 741/1. by salts, especially ammonium salts

with and without presenco of ammonia, 50, 545.4.

by soils, 50, 4374 ; instrument for measurement, 50, 3584.

by stray currents, 50, 305.4, 6094. by tan liquors, 50, 3034, 5744. by tea, 50, 7404. by vinegar, 50, 6674. difference effect, 50, 3584. distribution, 50, 2324, 6684, 7414. due to potential differences, 50, 7374 ;

and its prevention, 50, 357/1. effect of cold-working, 48, 112, 118,

120.electrolytic, in brewory, 50, 5464 ;

report o f A.S.T.M. sub-cttee., 50, 5484.

factors influencing, 50, 834.film reactions, 50, 7414.galvanic, 50, 5454 ; report of A.S.T.M.

sub-cttee., 50, 5484. grain-size, eutectic and, relation, 50,

4374.immersion tests, controlled data from,

50, 4804.impingement, seasonal variation in rate,

50, 284.impingement test apparatus, modified,

49, 123 (Paper).in ship construction, 50, 3044, 4374.“ index,” 50, 2324. inhibitors, 50, 574, 5454. intercrystalline, 50, 2324. investigation, air thermostats for, 50,

284.loss in weight tests, unreliability, 50,

4804.measurement, olectrochem. mothod, 50,

6114. mechanism, 50, 3554. periodic physico-chemical phenomena,

50, 834.

Corrosion, physical chemistry, 50, 3044. prevention, 50, 231/1 ; b y a d d n s . o f

s o d iu m d i c h r o m a t o t o d is t i l l e d w a t e r a n d s o d iu m c h l o r i d e s o in s . , 50, 358/1 ; in s h ip s , 50, 7394 (s o o a ls o Anodic oxidation, Deposition , Galvanizing, Paints, Shcrardizing, Spraying o f metals, Tinning, & c . , a n d u n d e r n a m e s o f v a r io u s m e t a ls a n d a l l o y s ) ,

protection against. S e e Protection, a n d u n d e r v a r io u s m e t h o d s , e .g . Anodic oxidation, Deposition , Galvanizing, Paints, Spraying, Tinning, & e .

research methods, 50, 3044. resistance limits, 50, 3554 ; d e p e n d e n c e

o n c r y s t a l lo g r a p h ie o r i o n t a t i o n , 50, 6074 ; e x is t e n c e in s o l id s o in s , w it h ir r e g u la r a t o m i c d i s t r ib u t io n . 50, 6074 ; r o la t io n t o r e g u la r d i s t r ib u t i o n o f a t o m s , 50, 7414.

resistance to, e v a lu a t i o n , 50, 6084. rôle of oxygen, 50, 1614. seasonal variation, 50, 28.1. shell fauna and, 48, 110, 119. stress-, d e t e r m in in g fa c t o r s , 50, 2314 ;

in f lu e n c e o f w aiter o o m p n . , 50, 2314. submerged, o x y g e n a s f a c t o r , 50, 3044. symposium, 50, 5874. tester, 50, 284 ; f o r p r e s s u r e v e s s e ls ,

50, 161/1.testing, 50, 2314, 2334, 4334, 6104 ;

accolerated, methods, 50, 4384 ;“ corrosiograph,” 50, 2334 ; nowapparatus, 50, 4384 ; with Tôdt’s corrosimetcr, 50, 2334.

theory, 50, 2314, 4374 ; based on heterogeneous catalysis, 50, 6104 ; electrochemical, 50, 6684 ; ‘electrolytic, 50, 28/1 ; in light of quantitative moasuromonts, 50, 274 ;present status, 50, 294 ; review, 50, 1614, 4384.

topochemistry, 50, 834, 6104. types, 50, 480/1.under cyclic stress. S o o Corrosion-fatigue. velocity, f r o m e le c t r o c h e m . p o i n t o f

v i e w , 50, 6104.Corrosion-fatigue, 49, 17 (Autum n Lecture),

49, 93 (P aper). atmospheric, 49, 93 (Paper). bibliography, 49, 91. exhibited by changes in microstructure,

49, 70.factors, influence of stress range, time,

number of cycles, and corrosivity of environment as, 49, 40.

failures in service, 49, 29. in steam, 49, 53.influence of water composition, 50, 2314. mechanism, 49, 81. nomenclature, 49, 23. resistance to, influence of chenu compn.,

heat-treatment, and cold-working, 49, 34.

summary of present knowledge, 50 4694.

Corrosion-fatigue o f—Aluminium, 50, 3004.Aluminium alloys, 49, 38.

820 Subject IndexCorrosion-fatigue of—

Brasses, 50, 42.-1. Bronzes, 50, 42/1. Copper, 50, 42/1. Copper-nickel alloys, 49, 38. Copper-zinc alloys, 49, 38. Duralumin, 50, 42.4. Elektron, 50, 42.1. K.S.-Seewasser, 50, 42.1. Lautal, 50, 42.-1. Legal, 50, 42.1. Silumin, 50, 42/1.Steels, 49, 36; 50, 42/1 ; oflect of

cadmium or zinc coatings, 50, 314/1; effect of pickling, 50, 314.1.

Corrosion of— Acetic acid equipment, 50, 547.1. Aircraft materials, 50, 355/1. Alclad, 49, 147.Allegheny metal, by iodino, 50, 302/1 ;

by milk, 50, 302/1.Aluminium, 50, 479.4 ; accelerated tests,

50, 354/1; brewery vessels, 50, 27.1, 666/1 ; brewery vessels by electric currents, 50, 2 2 8 4 ; brewery vessels, detection and measurement o f olcct. currents, 50, 666/1; by acids and bases, 50, 24/1 ; by alkaline solns., 50, 244, 4364. ; by chloride of sulphur, 50, 3544 ; by distilled water ana salt solns., prevention by addn. of sodium dichromatc, 50, 3584 ; by hot vapours o f cracked petrol, 50, 2304 ; by hydrogen peroxide solns., 50, 4 3 3 4 ; by inorganic and organic substances used in chem. and food industries, 50, 824 ; by liquid fuels, 50, 7374 ; by milk, 50, 302/1, 6664 ; by sea-water, 48, 109; collapsible tubes by soap, inhibition, 50, 5 5 0 4 ; effect of contact with other me tills, 50, 2294 ; effect of foreign metals on rato of dissoln., 50, 7404 ; factors affecting, 50, 543/1 ; hard-rolled sheet, local, 50, 7414 ; in Duffek’s apparatus, 50, 2294 ; kettles by linseed oil, 50, 8 2 4 ; oil-leaso tanks, 50, 3004 ; protective action o f sodium silicate, 50, 4324, 433.1.

Aluminium alloys, 50, 229/1, 4794 ; accelerated tests, 50, 35 44 ; atmos- plieric, 50,1604 ; by hydrogen peroxide solns., 50, 4334 ; by potential differences, prevention, 50, 3574 ; by soa- water, 50, 160/1; effect of contact with other metals, 50, 2294 ; effect of internal stress, 48, 184; testmethods adopted by members of Aluminium Association, 50, 82/4.

Aluminium chromium alloys bv seawater, 50, 6664.

Ambrac, by milk, 50, 3024.Armatures on aluminium fermenting and

storage tanks, 50, 4794.Ascaloy, by iodine, 50, 302/1; by milk,

50, 3024.Avional, 50, 348/1.Babbitt metal, by hot vapours o f cracked

petrol, 50, 2304.Base metals, influence o f foreign metals

on rate of dissoln., 50, 7404.

Corrosion of— Boiler plant, 50, 1614.Brass, 50, 7384 ; by chromic acid, effect

o f cold-rolling and annealing, 50, 4344 ; by distilled wator and salt solns., prevention by addn. of sodium dichromate, 50, 358.1 ; by hot vapours of cracked petrol, 50, 2304 ; by milk, 50, 3024 ; by phosphoric acid, 50, 4 3 6 4 ; internal, 50, 254 ; sugarevaporator tubes, 50, 667/1.

Brewery plant, 50, 274.Bronzes, 50, 355/1 ; by hydrochloric

acid, 50, 4344 ; by inorganic acids, 50, 6084 ; by milk, 50, 3024 ; by phosphoric acid, 50, 4344 ; by sulphuric acid, 50, 43 44 ; by vinegar, 50, 6674.

Buried structures, 50, 3054, 4374, 6094.Central heating apparatus, 50, 1614.Chromium alloys, by milk, 50, 302.4.Chromium-nickel alloys, by milk, 50,

302.4.Condenser tubes, 50, 1834, 3004, 3044,

377/1, 7384.Condensers in crude oil plant, 50, 3594.Copper, 50, 254, 434.1 ; atmospheric,

50, 28/1 ; atmospheric;, artificial prodn. o f greon patina, 49, 153 (P a p er); atmospheric, rapid development of patina, 50, 066/1 ; brewery plant, 50, 274 ; by alkaline solns., 50, 4364 ; by beer, 50, 2294 ; by distilled water and salt solns., prevention by addn. o f sodium dichromate, 50, 3584 ; by hot vapours of cracked petrol, 50, 2 3 0 4 ; by hydrochloric aeid, 50, 4344 ; by inorganic acids, 50, 6084 ; by milk, 50, 254 , 3024 ; by milk, effects of operating conditions in various parts of pasteurizing equipment, 50, 4354 ; by petrol and motor benzines, 50, 5444 ; by phosphoric acid, 50, 434/1; by sea-water, 48, 109; by sea-water, effect of arsenic, 48, 113, 119; by sulphuric acid, 50, 4344 ; by vinegar, 50, 0674 ; by well water, 50, 3 5 5 4 ; chromium-plated, by milk, 50, 302/1 ; influence of foreign metals on rate of dissoln., 50, 7404 ; open-valley flashings, 50, 6084 ; pipes, olectrolytic, 50, 3554 ; single crystals, velocity of dissoln. o f different faces, 50, 3 0 14 ; tin-plated,. by milk, 50, 3 0 2 4 ; tinned and soldered sheets, atmospheric, 50, 3554, 6664.

Copper alloys, 50, 25/1, 3554 ; by bleaching liquors in textile industry, 50, 4354 ; by milk, 50, 3024 ; by phosphoric acid, 50, 4364 ; by sea-water, 50, 4804.

Copper-cadmium alloys wire, 50, 4794.Copper-nickel alloys, by phosphoric acid,

50, 4364 ; by sea-water, 48, 109.Copper-tin alloys, potential measure

ments and dissoln. tests, 50, 5444.Copper-zinc alloys, potential measure

ments and dissoln. tests, 50, 5444.Corronil by sea-water, 48, 109.Dairy equipment, 50, 3574.

Subject Index 821Corrosion of—

Dental alloys, 50, 7394. Duralplat, 50, 4244, 7 2 84 ; in North

Sea, 49, 135 (P a p er); riveted joints, 50, 7384.

Duralumin, accelerated test for susceptibility to intcrcrystallino attack, 48, 107 ; as affected by compn., 50, 1004, 2294 ; influence of hoat-treatrnent temperature, 48, 179; intorcrystalline, 48, 105 (P a p er); methods of test, 50, 2334.

Duriron, by iodine, 50, 3024.Electrodeposits, prepn. of specimens for

exposuro tests, 50, G09*-l.Enduro A, by milk, 50, 3024.Ferrous and non-ferrous metals and

alloys, relative, 48, 109 (Paper). Fusible plugs, 50, 2294. Galvanized iron and steel, “ whit© rust,”

50, 0094.Gold-copper alloys, X-ray study, 50,

3554 , 4804.Iron, 50, 274 ; by bleaching liquors in

textilo industry, 50, 4 3 5 4 ; by distilled water and salt solns., prevention by addn. of sodium dicliromate, 50, 3 5 84 ; by hot vapours o f cracked petrol, 50, 2304 ; by phosphoric acid, 50, 4304 ; field tests of metallic coatings, report of A.S.T.M. sub-cttco., 50, 3044 ; in citric acid, 50, 1614; in DufTek’s apparatus, 50, 2294; report o f A.S.T.M. cttee., 50, 5494.

K.S.-Seewasser, 50, 3484, 4794.Lautal, protective action of sodium

silicate, 50, 4334.Lead, by distilled water and salt solns.,

prevention by addn. of sodium dichromate, 50, 3584 ; by hot vapours of cracked potrol, 50, 2 3 04 ; by iodine, 50, 3 0 24 ; by mortars and concrete, 50, 1614 ; by sea-water, 48, 109; by vinegar, 50, 6674 ; by well water, 50, 3 5 54 ; cable-sheath by paper and juto wrapping, 50, 2 5 4 ; cable sheath by phenol in tar coating, 50 ,3564; cable sheath, experience of 35 American companios, 50, 254 ; cablo- sheath, underground, 50, 3564.

Lead alloys, (B.N.F.M .ll.A.) in buildings, 50, 3014 ; relation of grain-sizo and eutectic, 50, 4374.

Lead-bronzes, 50, 3554.Light alloys, prevention, 50, 29/1.Magnesium alloys, 50, 3554, 651.1,

7404.Monel metal, 50, 194, 25 54 ; by

alkaline solns., 50, 4364 ; by bloaching liquors in textile industry, 50, 4354 ; by cider and applo juico, 50, 3034 ; by milk, 50, 3024.

Nickel, atmosphorio (“ fogging” ), 48, 121 (P a p er ); by alkaline solns., 50, 4364 ; by bleaclnngliquors in textilo industry, 50, 4354 ; bv milk, 50, 3024 ; by milk, effects of oporating conditions in various parts of pasteurizing equipment, 50, 4354 ; by soa-water, 48, 109.

Corrosion of—Nickel alloys by alkaline solns., 50, 4364. Nickel-brass, by milk, 50, 3024 ; by

milk, offocts of operating conditions in various parts o f pasteurizing equipment, 50, 4354.

Nickel-chromium-iron alloys, by seawater, 48, 109; in milk, offocts of oporating conditions in various parts of pasteurizing equipment, 50, 4354.

Nickel-copper alloys, atmospheric (“ fogging ” ), 48, 122.

Nickel-iron alloys by soa-water, 48, 109. Non-ferrous metals and alloys, report of

A.S.T.M. cttoo., 50, 3044, 5484.Oil cracking equipment, 50, 2304.Oil pipe lines, location and study by

surface oloct. measurements, 50, 2304. Oil refinery equipment, 50, 4364. Phosphor-bronze by bleaching liquors

in textilo industry, 50, 4354. Propellers (marine), 49, 130; 50, 1004. Radiators (automobile), 50, 274. Refrigerating plant, 50, 0094.Resistal by iodine, 50, 3024.Silumin, 50, 4794 ; by acid and alkaline

solns., 50, 244 ; protectivo action of sodium silicate, 50, 4334 ; tables of rate of attack, 50, 2944.

Silver by sulphide solns., 50, 264.Silver alloys, by sulphido solns., 50, 264. Silveroid by soa-water, 48, 109.Sprayed metal coatings, 50, 3004 ; on

steel, accolorated test in S 02-C 0 2-air atmosphero, 50, 2304.

Steels, 50, 274 ; by bleaching liquors in textilo industry, 50, 4354 ; by distilled water and salt solns., prevention by addn., o f sodium dichromate, 50, 3584 ; by hot vapour3 o f cracked petrol, 50, 2304 ; by iodine, 50, 3024 ; field tests of metallic coatings, report of A.S.T.M. sub-cttee., 50, 3044 ; report of A.S.T.M. cttee., 50, 5494.

Thallium by acids, 50, 264.Tin, 50, 5444, 7404 ; by citric acid, 50,

16 14 ; by citric acid solns., effect of H-ion concn., 50, 264 ; by hydrochloric acid, 50, 4 3 44 ; by inorganic acids, 50, 6084 ; by phosphoric acid, 50, 4 3 44 ; by sea-water, 48, 109; by sulphuric acid, 50, 4 3 44 ; by vinegar, 50, 6674.

Tin alloys, 50, 7404. Tinned iron, 50, 5444.Tinplate, 50, 1614, 35 64 ; American

and British investigations, 50, 6674 ; by dilute acid solns., 50, 4344 ; by foods, 50, 3024 ; by foods, generation of hydrogen, 50, 5 4 54 ; by foods, role of oxygen, 50, 4354 ; by fruits, 50, 2 6 4 ; by green vegetables, 50, 264 ; by milk, 50» 3024 ; importance of traces of sulphur on sprayed fruits, 50, 6084 ; swelling of canned prunes, 50, 6084.

Turbines (steam), 50, 3574.Underground structures, 50, 4 3 7 4 ; by

strav currents, 50, 0094 ; electrolytic, 50, 3054.

Corrosion of—Utensils by water, coffee, and tea, 50,

740.-1.Waukesha metal by milk, 50, 302.-1.Zinc, by acids, 50, 480.1 : by milk, 50,

302.-1 ; by sea-watèr, 48, 109 ; effect o f />n. in oxygenated aqueous soins., 50, 302.-1 ; effect of temp., 50, 2G.-1 ; influence o f foreign metals, on rato of dissoin., 50, 740.-1 ; sheet contg. 1% iead by acids, 50, 435.-1.

Zinc -bronzes, 50, 355.4.Zinc-coated water pipes, 50, 667.1.Zinc-silver alloys by acids, 50, 357.-1.

Corrosion-resistant materials (see also under names of alloys. &c.), 50, 83.4,222.4. 346.4, 669.4, 741.-1.

compositions and manufacturers, 50,29.4.

Council,election, 48, 17.nominations for 1933-1934, 49, 14.report, 48, 1.vote of thanks to, 48, 17.

Cracking. See Internal stress, Season- cracking, &c.

Crackless plasticity, 50, 7.4.Cracks,

form and growth, 50, 71.4. physical natures and significances, 50,

71.1.Creep, 50, 751.4.

at elevated temperatures, 50, 658/1, 659/1.

book, 50, 335.4 (review). discussion, 50, 532.1. influence of recrystallization temperature

and grain-size, 50, 432.-1, 665.4. investigations, 50, 468.4. methods of investigation, 50, 149.1. rate, 50, 058--1, 059.4. review of recent work, 50, 149.1. testing, 50, 058/1, 059.-1. testing machine, 50, 149.4. tests, short-tim©, reliability, 50, 149.4. thermal, 50, 468.-1.

Creep of—Aluminium-manganese alloys, 50, 299.4. Aluminium-silicon alloys, 50, 299.4. Brass, 50, 477/1.Copper alloys, 50, 530.4.Copper-tin-zinc alloys, 50, 432.1.Copper zinc alloys, 50, 432/1.Duralumin, 50, 477/1.Iron, 50, 558.1.Lead cable-shcatli, 50, 717/1, 723.4.Lead alloys cable-shoath, 50, 717.4,

723.-1.Magnesium, 50, 474.4.Magnesium alloys, 50, 474.4.Nickel, 50, 558.1 ; wires, 49, 295.Nickel alloys, 50, 558.-1.Nickel-copper alloys, 50, 432.4. Phosphor-bronze, 50, 477.4.

Cromal, 50, 536.-1.Crucibles,

aluminium oxide, 50, 644.4. beryllium oxide, 50, 644.4. carbidic, manuf. and properties, 50,

584.4.

822 SubjectCrucibles,

cast-iron, compared with graphite in aluminium melting furnaces, 50, 506/1.

graphite, compared with cast-iron in aluminium melting furnaces, 50, 506**1 ; manuf., 50, 273-4 ; treatment in melting practice, 50, 331/1.

laboratory, progress, 50, 584/1. magnesium oxide, 50, 644/1; impervious

to air, 50, 513.4. nitridic, manuf. and properties, 50,

584*4.thorium oxide, 50, 644.4. zirconium oxide, 50, 644*1. zirconium silicate, 50, 644*4.

Crystal analysis (X-ray), book, 50, 412/1 (review). report of D .S.I.R . cttee., 50, 308*4.

Crystal growth in—Hexagonal metals, 50, 616*4.

Crystal lattice (see also Crystal structure, Lattice constants),

atomic state in, 50, 37*4. changes, previous method of measure

ment, 50, 364*4. constants. Seo Lattice constants. cubic, electrostatic potential, 50, 486.4. distortion, 50, 33/1, 37/1; in cold-

drawn wire, 50, 191-4 ; in cold-rollod metals, 50, 672*4 ; in heat-treated tungsten magnet steels, 50, 165.4; in stretched wire, 50, 617*4.

energy constants, methods of computation, 50, 746-4.

graphical determination from X-ray powder method data, 50, 165/1.

spacing, method for deducing accurate values from Debye—Scherrer X-ray powder photographs, 50, 673.4.

Crystal nuclei, resistance and development above melting temp., 50, 292*4.

Crystal structure (see also Crystal lattice, Lattice constants tOc.),

cubic, tables, 50, 588.4.Debye-Scherrer apparatus, chamber for

specimons of all shapes, 50, 238.4. determination by sound vibrations, 50,

745/1.elementary description, 50, 607*4. investigation, Dobyo-Scherror method,

method of ensuring max. accuracy, 50, 487^1; rationalization of apparatus, 50, 489*4.

Laue diagrams with largo diffraction angles, 50, 165/1.

powder and rotating crystal photographs, causo of broadening of lines, 50, 37*4.

x-ray analysis, spherical reflection method, 50, 445.4.

Crystal structure of—Alloys, containing transition elements,

50, 745.4 ; sensitive to air, prepn. of Debye-Scherrer diagr., 50, 432*4.

Aluminium-copper alloys, 50, 34.4. Aluminium-iron alloys, 50, 308/1, 362/1,

486-4.Antimony electro-deposits, effect of

temp., 50, 562/1.Antimony-cadmium alloys, 50, 440-4.

Index

Subject Index 823Crystal structure of—

Bismuth-antimony alloys, 50, 349.1. Borides, 50, 33/1. Carbides, 50, 33.4.Cobalt electro -deposits, effoct of H-ion

concn., 50, 031.4.Copper deposited in presence of gelatine,

50, 80.4.Films, 50, 237.1, 017.4. Gallium, 50, 610.1. Gold-antimony alloys, 50, 35.4. Gold-platinum alloys, 50, 80.4, 553.1. Gold-tin alloys, 50, 30.1. Manganese-iron alloys, 50, 79.1, 297.1,

732.4. Silver-antimony alloys, 50, 30.4. Silver-arsenie alloys, 50, 30.1. Silver-bismutli alloys, 50, 30.4. Silver-tin alloys, 50, 35.1. NaTl, 50, 303.1. Sodium-tungsten bronzes, 50, 740.4.Tin antimony alloys, B-solid solution,

50, 22/1.(3-Zirconium, 50, 440.4.

Crystalline metal, 50, 342/1. Crystalline state, tlioory, development, 50,

487.4.Crystalline substances, constitutional

formulae, 50, 38.4.Crystallites, proforred orientation producod

by cold-rolling, 50, 104.4. Crystallization,

primary, 50, 149.4. rhythmic, 50, 071/1. theory, 50, 149.4, 071.4. under pressures up to 20,000 atm., 50,

292/1.Crystallography,

book, 50, 525.1. investigations carried out in 1930 and

1931, 50, 238.1. Crystals,

anisotropic, relation botwoon specific heat and eoofT. o f expansion, 50,209.4.

cut and polishod, surfaco structure, 50, 552A.

electric moments, pormanont, 50, 75.4. films, structure, 50, 552.4. growth, fundamental principles, 50,

38.4 ; in motal vapour, 50, 38/i, 744/1. lattice constants. Soe Lattice constant magnetic moments, pormanont, 50, 75.4. mosaic structure, 50, 440/1, 071.!, 745/1. plasticity, dependence on temp., 50,

529/1, 531.4 ; temp. cooiT., 50, 37/1. secondary structure, 50, 440/1; theory,

50, 75.4.shape oi growth, 50, 420.4, 725.4. single-. See Single-crystals. spherical, in opaquo bodies, calculation

of number and size by means of circular soctions on piano soction, 50, 748/1.

structure, book, 50, 055/1 (review).Cupal, use for contact purposes, 50, 103.4. Cupolas, design, book, 50, 142/4 (review). Cupping tests. Seo Testing.Curie point, change o f resistance und

magnetization at, 50, 344.1.

Curling, external, for soamless boxes, 50, 575/1.

Cutting, 50, 201/1. capacity, 50, 769.1.compounds used in Ford machine shops,

50, 577/1.cooling and lubricating materials, choice,

50, 110/1.fluids, 50, 577.1; characteristics and

selection, 50, 118/1; replios toquestionnaire, 50, 704.4; roport of A.S.JI.E. cttee., 50, 704/1 ; selection, 50, 705.4 ; use in machino shop practice, 50, 261/1.

hack-saw, 50, 704.4. materials, 50, 261/4 (soo also under names

of cutting materials : Ramet, Widia, Tantalum carbide, Tungsten carbide, &c.).

oxy-acetylene, indust, oppns., 50, 115.4. speeds and feeds, 50, 118.4.

Cutting of— Aluminium alloys, 50, 496/1.Brass, spoods, 50, 767.4.Bronze, spoods, 50, 767.4.Magnesium alloys, 50, 490/1.

Cutting tools, carborundum, for fino surfaces, 50, 575/4. chromium-plating, 50, 704/1. tungsten carbide. Soo Tungsten carbide,

&c.Cyanides in metallurgy, 50, 249.4.

Dairy equipment, corrosion, 50, 357.1.Damping, 50, 308.4.

book, 50, 404/1 (review). capacity, 50, 216/1, 299.4. dependence on magnitude of rate of

deformation, book, 50, 524.4. in vibrating steel rods, 50, 92.4. variability, 50, 626/4.

Debye-Scherrer diagrams. See Crystal structure.

Decorative metal, plant, description, 50,109.4.

Defects, detoction. Soo Radiology.Deformable bodies, mechanics, book, 50,

783/1.Deformation,

efficiency of, 43, 338. elastic. Seo Elastic deformation. equations, 50, 420.1. local, methods of study, 50, 025.4. plastic. Soe Plastic deformation.

Deformation textures, 50, 37/1, 429.4,017.4 (seo also Rolling texture, i c . ) .

Deformed metals, softening, time law, 50, 0.4, 342/1.

Degreasing, 50, 505.4, 683/1, 768-4.^ for chromium plating, 50, 192-4, 768.4. lor enamelling, 50, 192/4. modern methods, 50, 120/4. trichlorethylene process, 50, l~OA,

192/1, 193.4, 328.4, 504.4. vapour, 50, 96.1.

Delta metal, centrifugal casting, 50, 7H A .Denitriding in salt baths and molten

aluminium, 50, 689/1.Density, efioct of torsion, 50, 659/1.

824 Subject IndexDensity o£—

Alumininm alloys, influence of treatment. with nitrogen and volatilo chlorides, 49, 305.

Copiier-cadmium alloys, 50, 152.-1. Copper-tin alloys, 50, ■(28 ,-1 . Silver-copper-nickel-zinc alloys, 50,

606/1.Dental alloys (see also Chrogo t/42),

corrosion, 50, 739-1.plates, cast and swaged, observations

on, 50, 662.fl. platinum metals in, 50, 476.1. survey, 50, 81.4. tensile properties, 50, 476.4.

Dental metallurgy, books, 50, 133.4, 654.4 (review).

Deoxidation of—Aluminium, 50, 708.1.Molten metal, 50, 506.4, 770,4.

Deoxidizers, 50, 194,4, 506/1. object and function, 50, 708.1. requirements, 50, 5UG.-I.

Deposition. Seo Galvanizing, Sherardiz- ing, Spraying o j metals, T inning, &c.

Deposition (electro-), addition agents, theory, 50, 760.1. adherence of coatings,’ 50, 034.4, 635.4. adhesion to cathode, prevention, 50,

760.4. advances, 50, 683.1.analysis of solutions, 50, 635.4 ; booklot,

50, 718.4. apparatus, 50, 451.-1. application to engineering, 50, 493.1. barrel, 50, 48.4.books, 50, 333/1, 409.-1 (review), 783.-1. control of quality and thickness, 50,682/1. education of platers, 50, 48.1, 250.4. electrical apparatus for taking current

direct from a.e. mains, 50, 760.-1. Fescol process, 50, 682-4. free cyanide, definition and detn. in

solns., 50, 249.4. from cyanide baths, 50, 249.-1. from non-aqueous solutions, 50, 451,1. from salt solutions in anhydrous am

monia, 50, 48.1. glacial acetic acid as solvent, 50, 314.1. handbook, 50, 281/1. history, 50, 316.4,hydrogen-ion concentration, measure

ment, 50, 248.4. hydrogen-ion control of solns., 50, 317/1. industry, 50, 48/1. microscopic study, 50, 634.1. on aluminium and its alloys, 50, 493.1,

683/1, 760.4 ; commercial, 50, 451.4 ; from cyanide solns., 50, 249.4, 451/1.

on glass, 50, 565.-1. on non-metallic articles, 50, 634.1. on porcelain, 50, 565.1, 634.4. on zinc-base die-castings, 50, 248/1. plant, organization, 50, 250.4. progress in 1931, 50, 250/1. repairs to Diesel engine by, 50, 58S.-1,

635/1.rise and early development, 50, 316/1. solutions, control, 50, 250.4; heating,

50, 760/4.

Deposition (electro-),tanks, lining, 50, 48.4 ; rubber-linod, 50,

683.4.theory, 50, 634,4.thickness of plate, 50, 493.1, 634.-1.throwing power of solutions, 50, 47.1,

48/1, 634.4.use of metallic (electronic) rectifiers, 50,

250/1.without external current, 50, 317.1.

Deposition of (electro-)—Alloys, roeont work, 50, 249.4 ; review,

50, 451A , 493.4.Aluminium, 50, 234.-1, 246.4, 305/1.Antimony from glacial acetic acid solns.,

X -ray study of structure of deposits, 50, 314.4.

Arsenic from glacial acetic acid solns. X -ray study of structure of deposits, 50, 314/1.

Beryllium, 49, 373.Bismuth from glacial acetic acid solns..

X -ray study of structure of doposits, 50, 314/1.

Brass, complex cyanides in solns., 50, 632/1 ; from cyanide solns., 50, 631.4 ; from thioeyanate solns., 50, 248/1.

E-Brass, 50, 671.4.Cadmium, 50, 95.-1, 370.-1 ; analysis of

solns., 50, 675.4; Cadalux process, 50, 247/1; “ Einsinken,” 50, 247/1 ; factors influencing efficiency for rust prevention, 50, 85.4 ; from cadmium sulphate solns., effect of p a , c.d., and tomp. on crystal sizo of deposit, current offlcioncy and oloctrodo efficiency ratios, 50, 562/1 ; on aluminium and Duralumin, 50, 669/1; on flat blanks beforo forming, 50, 563-1 ; on iron and steel castings, 50, 176/1,314.1 ; stability of cyanide solns., 50,247.4 ; stability of solns., 50, 314.-1.

Chromium, 50,450/1, 492/1,629/1, 630/1;advantages and limitations, 50, 371/1 ; analysis of solns., 50, 492/1, 630.4,631.4 ; anodes and auxiliary anodes, 50,448/1 ; at high c.d., 50, 177.1 ; automatic equipment, 50, 564/1 ; bibliography, 50, 759/1 ; books, 50, 406/1, 464.-1 {review), 526/1, 654.-1 (review), 714/1, 717.-1; bright plating ratio, 50, 314/4, 371/1; chem. and phys. actions in bath, 50, 629.1 ; chemistry of process, 50, 176.4 ; cooff. of metal distribution, 50, 314.1 ; cost calculations, 50, 681/1 ; deposits freo from fissures and pores, 50, 176.-1, 449.1.; dermatitis caused by uso of “ Chrompro- tekt ” coating on surface of batli, 50, 681/1; design of oquipmont, 50, 564/1; detn. of sulphuric acid in baths, 50,46.4, 631.4 ; difficulties, 50, 95/1;durable bright finish, 50, 370.-1 ; offoct of addns. to bath on hurdness of doposits, 50, 177/1 ; electrostatic distribution, 50, 371/1 ; oxperionces, 50, 45/1; Fescol process, 50, 682/1 ; for wear-resistance, 50, 449.4 ; fromaquoous chromic acid solns., theory, 50, 370--1 ; from chromic acid solns.,

Subject Index 825Deposition of (electro-)—

limits of rational current yield, 50, 448-4 ; from “ Kr ” bath, fissure- and pore-free deposits, 50, 449A ; from tervalent chromium salt solns., 50, 758/1; “ high a c id ” proccss, 50, 681.4; high c.d., problems, 50, 314.4,682.4 ; historical survey, 50, 95.1 ;hydrogen in deposits, 50, 629/1 ;hygienic advantages of “ Chrompro- tekt ” coating on surface of bath, 50, 681/1; improving durability of plate, 50, 45.4 ; in glass industry, 50, 629.4 ; influence of cathode metal, 50, 95/1 ; installation of equipmont, 50, 564.4 ; in U.S.A., 50, 95/1 ; lead and lead- antimony anodes, 50, 95/1, 758/1.; list of patents, 50, 46.4 ; magnesium sulphate nickel bath for undercoats, 50, 95/1 ; occupational risks, 50, 493.4 ; on aluminium and its alloys, 50, 96.4, 177/1, 449/1, 563/1, 681*4 ; on aluminium, Perma-Chromo process, 50, 492/1; on brass, 50, 361/1; on brass, tarnishing of deposits, 50, 177/1 ; on common motals and alloys, 50, 449.4 ; on elect, appliances, 50, 564.1 ; on gauges, 50, 492/1, 681*1 ; on glass moulds, 50, 563/1; on light motals, 50, 45.4; on rolled zinc and zinc die-castings, 50, 99/1; on silver, 50, 964, 177/1, 629/1; on steel dies, 50,563.4 ; on steel for woar-rosistanco, 50, 96.1, 449.4, 563/1, 758/1 ; on steel rolls, 50, 563/1 ; on zinc, 50, 371/1 ; on zinc sheet, 50, 563/1; porosity of deposits, 50, 32.1 ; possibility of use of chromium anodes, 50, 681/1; practice and theory, 50, 176/1 ; preliminary treatment, 50, 95/1 ; preparation of thick deposits free from fissures and pores, 50, 371.4.; propn. of work, 50,95.4, 564/1, 578/1; present position, 50, 96^1; production methods, 50, 563.1 ; production of good deposits, 50, 95*4; protective covering layer on surface of bath, 50, 449*4 ; removal of fumes from bath, 50, 449.1; skin diseases causod by uso of protective coatings on surface of bath, 50, 681/1 ; status, 50, 758/1 ; Stella soln., 50, 371/1 ; thick deposits, 50, 46/1; throwing power of baths, 50, 45/1, 448/1, 682/1.

Chromium-iron alloys, 50, 96*1.Cobalt, effect of H-ion concn. on crystal

structuro o f deposits, 50, 631/1. Cobalt-nickel alloys, 50, 176/1.Copper, control of cyanide solns., 50,

96/1, 247/1 ; detn. of copper in solns., 50, 99/1; detn. of thickness of deposits by nomograms, 50, 682.4 ; from cyanide solns., 50, 631*1; in form of shoet, 50, 631/1; in form of tubes, 50, 631/1 ; in presence of gum arabic, 50, 6S2/1 ; tensions of deposits, 50, 451/1 ; throwing power of solns., 50, 682/1.

Copper-cadmium-zinc alloys from cyanide baths, 50, 247.4.

Foils, 50, 565/1.

Deposition of (electro-)—Gold, 50, 249/1, 450/1; cyanides in rela

tion to, 50, 46/1, 98/1, 248/1 ; prepn. of baths, 50, 564*1.

Indium, 50, 594/1.Iron-copper-nickel alloys from cyanido

solns., 50, 2484.Lead, 50, 317*1 ; book, 50, 60/1; for

corrosion-resistance, 50, 371/1; practical hints, 50, 96/1.

Lead-bismuth alloys, 50, 632*4.Nickel, 50, 450*1 ; advantages of low pn,

50, 371*1 ; American and Continental practice, 50, 315*4, 682.1 ; at high c.d., 50, 177.1 ; calcium fluoridemethod for detn. of fluoride in baths, 50, 451/1 ; cathodic, from nickel sulphate solns., influonco of various factors, 50, 632.4 ; control of acidity in low p u baths, 50, 97/1 ; control of baths, 50, 315/1, 371*4, 564*4 ; dorma- titis, 50, 493*4 ; dotn. of nickel in bath by Moore’s method, 50, 98*4 ; detn. of thickness of doposits by nomograms, 50, 682*4 ; developments, 50, 450*4 ; offect of acidity of electrolyte on structure and hardness of deposits, 50, 178/1; effect of pn and of various buffering agents, 50, 178*4 ; effect of small amts. of chromic acid and of chromic sulphate, 50, 178*4 ; efficiency of nickol anodes, 50, 759/1 ; Fescol proccss, 50, 682*1; for resistance to corrosion, 50, 97.4 ; high c.d. problems, 50, 314.4, 682*4; highspeed, in England, 50, 97*1, 177/1 ; historical review, 50, 315*1; hot solns., progress, 50, 97*1 ; hot solns. and low Pr , 50, 564/1 ; low p u solns., 50, 97/1, 178/1 ; measurement of H-ion concn. of bath, 50, 248-1 ; nickel anodes for, 50, 46.4 ; on aluminium and its alloys, 50, 47*4, 248/1, 262.4, 450.4, 633*4, 759*1 ; on ulurninium die-castings, 50, 565.4 ; on rolled zinc and zinc die-castings, 50, 99*4 ; on worn Diesel engino parts, 50, 635.4 ; on zinc- base die-castings, 50, 248*4 ; Panzer process, 50, 97*1, 371*4 ; passive and dense deposits by Panzer process, 50, 97/1; pitting, 50, 564*1; prepn., advantages and disadvantages of nickel anodes, 50, 759/1; properties of low pjl baths, 50, 759/1; rapid, baths, 50, 97/1 ; rapid, comparison of practice in U.S.A. and Europe, 50, 564/1 ; “ stopping off ” materials, 50, 315/1; stripping baths, 50, 682.4 ; throwing powor of solns., 50, 682*4 ; ultra-rapid, 50, 493*4 ; uso of colorimeter for detn. of nickol content and p a of solns., 50, 48*4; using local a.c. or d.c. supply, 50, 759*4.

Nickel-copper-iron alloys, 50,96/1,682/1.Noble metals, limiting current density,

50, 99/1.Palladium, 50, 98.4.Platinum, 50, 98*1, 632/1.Rhodium, 50, 98*1 ; using Wilco solns.,

50, 178*4.

826 Subject IndexDeposition of (electro-)—

Silver, 50, 249/1; analysis o f solutions, 50, 464, 673/1, 760/1: bright, from oyanido baths, 50, 9S4 ; brigh toners, 50, 98/1; control of solns., 50, 450/1 ; cyanides in relation to, 50, 46/1, 98.1,248.4 ; dctn. of silvor in solns., 50,99.4 ; detn. of thickness of deposits by nomograms, 50, 682/1 ; faults, causo and prevention, 50, 450.4 ; from argentocyanido solns., 50, 178.4 ; from sulphate, nitrate, iluoborate and fluoride solns., 50, 98-4 ; on brass, matt surface, 50, 632.1 ; operation and control of baths, 50, 682/1 ; recovery of silver from old plating baths, 50,633.4 ; spotting, 50, 5654 ; study of solns., 50, 98.4 ; white spots on deposits, 50. 316/1.

Tellurium, 50, 636/1.Tin, 50, 178.4, 636/1, 760.4 ; on cast-iron

pistons, 50, 633/1, 760.1 ; pamphlet, 50, 3354.

Titanium on iron, 50, 5514.Tungsten, 50, 3 8 1 4 ; from aqueous

solns., 50, 994.Zinc, anodes for, 50, 7604 ; book, 50,

604 ; cathodic, from aqueous soln. of zinc sulphato, polarization potential, 50, 6334 ; detn. of zinc content of bath, 50, 565/1 ; discoloration o f deposits, 50, 5654 ; effect of mercury in oyanido solns., 50, 994, 24 94 ; layout of small plant, 50, 1784 ; on aluminium and Duralumin, 50, 6694 ; on steel, effect on endurance properties, 50, 4824, 670.1 ; tensions of deposits, 50, 4514 ; tcsting'of zinc salts, 50, 6654 ; throwing power of solns., 50, 474 , 6824.

Zinc-cadmium alloys, barrel, 50, 474 .Deposits,

adhesion to metals, detn., 50, 3594. corrosion-resistance to sea-water, 50,

7424.electro-, structure, 50, 6714. exposure tests, prepn. of specimens, 50,

6094. hardness, 50, 7604. porosity, detn., 50, 2504. protective, 50, 4834 ; effect- o f nature

and properties of basic materials, 50, 4814.

structure, 50, 3174. tensions, 50, 4514.

Detinning, 50, 2774, 4014, 521.1. Dezincification. Seo Corrosion.Diamagnetic metals, magnetic suscepti

bility, effect of plastic deformation, 50, 6604.

Diamagnetism of—Bismuth, anomalous, 50, 4174.Colloidal metals, 50, 2174.Free electrons in metal, 50, 3434.Metal crystals, 50, 2184. Solid solutions, 50, 6654.

Diaspore. See liefractory materials. Dictionaries (technical),

English-German, 50, 2834, 718.4. English-German-French, 50, 4154.

Dictionaries (technical), French-Gcrman-Italian, 50, 406.1. German-English, 50, 3344, 7824. German-English-French, 50, 282.1. German-French-Italian, 50, 2834.

Die-casting, 50, 2674, 712/1. alloys for, effect o f temp, on impact

strength, 50, 4774. costs, reduction, 50, 1224. developments, 50, 508.1. dies, automatic, design, 50, 2674, 391.1,

508.1, 7754 ; design, 50, 3914 ; material for, 50, 7124.

furnaces, use o f gas- or oil-fired, 50, 7764.

high-pressure, 50, 7124. machines, 50, 3314 : for aluminium, 50,

712.1; Madison-Kipp, 50, 508/1; reconditioning, 50, 7 1 2 4 ; Spark Plug Co’s., 50, 267.4 ; wear of dies, 50, 712/1.

practice, 50, 508.1.pressure, alloys for, 50, 2674 ; machines

and processes, 50, 3 3 1 4 ; of armatures, 50, 123.4; preparation ofmoulds, 50, 268.4 ; Spark Plug Co. machine, 50, 2674 ; steel for moulds, 50, 2674.

processes, advantages and disadvantages, 50, 3314.

report, of A.S.T.M. ctteo., 50, 323.4,581.1.

scope, 50, 123.4. technique, 50, 775.1.-

Dia-casting of—Aluminium elect, rotors, 50, 774.1 ;

utensil spouts by slush process, 50, 1234.

Aluminium-“ bronze,” 50, 1234. Tin-antimony alloy gas-meter valves, 50,

2614.Zinc-base alloys, 50, 267/1; high-

quality, use o f high-ęrade zinc essential, 50, 581/1 : recommended praetico (American), 50, 774/1.

Die-castings, aluminium-base. Sco Alum inium alloys. finishes, 50, 581/1. zinc-base. Seo Z inc alloys.

Die-pressing o f— Aluminium alloys, 50, 4964. Magnesium alloys, 50, 4964.

Dies, design, book, 50, 525/1.Diffusion, 50, 5.4.

coefficient, effect of temp., 50, 291.1. inter-, 50, 5974.with formation of intermetallic com

pound, 50, 470.1. Diffusion of—

Bismuth in lead, 50, 723.1.Cadmium into copper, 50, 4704.Copper into gold, 50, 339.1.Silver in load, 50, 7234.Solid metals, velocity, influenco o f temp.,

50, 6624.Thallium in load, 50, 7234.Tin in load, 50, 7234.Zinc into 3-brass, 50, 4704 ; into iron,

50, 4704.Dilatation. Seo Expansion. Dilatometers. Seo Laboratory apparatus.

Subject Index 827

Dilatometric analysis, 50, 228.1, 311.-1, 543.4.

Dimensions, infinitesimal, measurement, 50, 924.

Dinas bricks. See Refractory materials.Dissolution of metals in non-metallic

solvents, 50, 7254. Dognat, 50, 7354. Dr.-Ing. dissertations, German, index

(1923-1927), 50, 2884 (review). Dowmetal,

compositions, 50, 6044. properties, 50, 004.1, 0054. uses, 50, 0054 ; in trailer cars, 50, 6914.

Drawing,cold-, cooling and lubricating materials,

50, 1164.deep-, book, 50, 4094 (rev iew ); dies

for, 50, 7674 ; researches, 50, 564, 5744.

deformation and structure, 48, 327. deformation during, 48, 335. rates of change of shape, 50, 5024. tools, 50, 1184.

Drawing of— Aluminium alloys, 50, 4964. Elektron, 50, 1554. Magnesium alloys, 50, 4964.Wire. See Wire-drawing.Zinc, deep-, 50, 5044.

Drilling, continuous, 50, 7674. Drilling of—

Light alloys, small diam. drills, 50, 2604.

Drop-forging of— Aluminium alloys, 50, 5744.

Durability, 50, 27G4. Duralite, 50, 6614. Duralplat,

corrosion, in North Sea, 49, 135 (Paper). riveted joints, corrosion, 50, 7384. sheet, properties, 50, 4244, 7284.

Duralumin (see also A vional and under names of constituent metals),

age-hardening, 48, 200 ; 50, 3474 ;at room temp., X -ray study, 50,362.1 ; effect of cold-rolling, 50, 424/1 ; effect of magnetic treatment, 48, 212 ; 50, 6604 ; effect of stretching after quenching, 50, 104, 7284.

aircraft fuselage, construction, 50, 2544 ;disadvantages, 50, 6874.

aircraft spars and floats, construction, 50, 2544.

aircraft wings, manuf., 50, 1814. aluminium-coated, 50, 6694. See also

Duralplat, &e. annealing, 50, 7644 ; thermal effect,

dilatometric investigation, 50, 7274. beams, tests, 50, 3134. bending, 50, 5754. book, 50, 6514. cadmium-plated, resistance to sea-water,

50, 7424.cadmium-plating for protection, 50,

. 6694.columns o f equal angle section, com

pressive strength, 50, 4054, 6604. connecting rods, construction o f bearings,

50, 3204.

Duralumin,corrosion, accelerated tests for suwcepti-

bility to intercrystallino attack, 48, 167 : as affected by compn., 50, 1604, 2294 ; influence of hoat-troatment temperature, 48, 179; intercrystallino,48, 165 (P a p er ); methods of test, 50, 2334.

corrosion-embrittlement, weather ex posure tests, 50, 1604.

corrosion-fatigue, 50, 424. creep, 50, 4774.cylinders, thin walled, strength tests in

torsion, pamphlet, 50, 7834. dynamic strength properties, 50, 6004. effect of iron, 50, 604 , 2214, 4714. elastic properties, effect o f temp., 48, 255. equilibrium relations, 50, 2224. factors of safety, 50, 2244. fatigue, 50, 7534 ; effect o f lanoline

coating, 49, 103; tests in shoar, 50, 2114.

forging, 50, 1 1 04 ; furnaccs andhammers for, 50, 7034.

hardness, change caused by bonding, 50, 6594.

heat-treatment, 50, 1104. improvement, recent work, 50, 124. mechanical properties, alteration as

function of working and subsequent heat-treatment, 50, 7454 ; effect of iron, 50, 4714.

notch-toughness, effoct o f temp., 50, 4244.

properties at high temps., 50, 4774. protection by Schoop inetal spray

process, 50, 7424. protective coatings, evaluation, 50, 3044. résumé o f present knowledge, 50, 2224. retarding of structural change by low-

temp, treatment, 50, 3534. rigidity, temp. coefT,, 50, 824, 1584. riveting, countersunk, 50, 3824. rivets, investigation on, 50, 208/1, 5704 ;

use in aircraft, 50, 534. sheet, alteration o f mech. properties

after corrosion by sea-water, 50, 7384 ; bonding, elastic and plastic deformation during, 50, 5354.

stress-corrosion cracks, 50, 7384. stress-endurance curves, 49, 27. tempering, effoct, 50, 3474. tensile properties at high W nps.,50, 1774* tensile testing o f thin sheet, influence

o f shape o f test specimen, 50, 0704. texture, alteration as function o f working

and subsequent heat-treatment, 50, 7454.

uses, 50, 2554 ; in aircraft construction, 50, 1814, 5674, 5684 ; in French all-metal fighter, 50, 5674 ; in loatlior industry, 50» 3734 ; in mine skins, 50, 6874 ; in ship construction, 50, 3204.

welding, 50, 112A . 0904, 6 9 7 4 ; in aircraft, research at IJ.8. Naval Aircraft Factory, 50, 1864.

wire, investigation on, 60, 208/1, 702/1 ;rnanuf., methods reviewed, 50, 702/1,

zinc-plating for protection, 50, 6694.

828 Subject IndexDuriraet, 50, 669/4.Duriron, corrosion by iodine, 50, 303.4. Dvi-manganese. See Rhénium.

Elastic after-effect, 50, 408.1.Elastic constants of—

Magnesium single crystals, 50, 212.4.Elastic deformation, thermal efforts, 50,

468/1, 658.1.Elastic hysteresis, 50, 468.4.Elastic limit, 50, 558.1.

importance in design, 50, 752.4. use of term, 48, 269.

Elastic limit o f—A .P. 33 alloy, 50, 425.4.Duralplat, 50, 424.4, 728.4.Gold-copper alloys, 50, 474.4.Metals exposed to tri-axial stress, 50,

658/1.Nickel-iron alloys, magneto-elastic

phenomena in relation to, 50, 350/1. Silver-copper alloys, 50, 351.1.

Elastic properties of—Wrought light metal alloys, effect of

temp., 48, 255.Elastic strains, X -ray analysis, 50, 445.4.Elastic stresses, investigation, modification

of photo-elastic method, 50, 753.4.Elastic tests. See Testing.Elasticity,

and strength, 50, 7.4. at small stresses, 50, 245.1. law, for isotropic and quasi-isotropic

substances by finite deformations, 50, 291.1.

Young’s modulus, detn., piezo-eloctric oscillators for, 50, 312/1.

Elasticity of—Duralplat, 50, 424.4, 72S.4.Magnesium, 50, 2.4.Nickel, modulus, effect o f magnetization,

50, 147.4, 419.1.Rods, modulus, detn. by means of

bending vibrations, 50, 174/1, 447.4.Elasticometer, 50, 93/1, 490.4.Election of—

Auditors, 48, 19.Members, 48, 18, 315; 49, 15.Officers, 46, 17.Student Members, 48, 18, 315; 49,

15.Electric filament lamp, manufacture, 50,

108/1.Electric furnaces. See Furnaces.Electric heating materials, roport of

A.S.T.M. cttee., 50, 693.4.Electric susceptibility, theory, book, 50,

719.4.Electric welding. Seo Welding.Electrical conductivity (seo also Electrical

resistance), and thermal conductivity, constant ratio,

50, 598.4.constant ratio between thermal con

ductivity and, 50, 217/1. mathematical explanation, 50, 72.1. part played by protons, 50, 9/1. theory, 50, 8-4, 9.4, 598.1 ; modern,

50, 217.1.

Electrical conductivity of—•Aldrey wire, offoct of raech. and thermal

treatment, 50, 294/1.Alkali metal amalgams (liquid), 50, 733.4.Aluminium, 50, 10.1, 425.1 ; conductors,

etfccfc of annealing, 50, 65/1 ; effect of iron, 50, 66/1 ; offoct of vanadium, 50, 472.4 ; increase by thermal treatment, 50, 65.1 ; wire, offoct of moch. and thermal treatment, 50, 294.4, 417/1.

Aluminium-copper alloys, 50, 10.4 ;wire, effect of moch. and thermal treatment, 50, 294.4.

Alumiuium-copper-silicon alloy wire, effect o f meeh. and thermul treatment, 50, 294/1.

Aluminium-magnesium alloys, 50, 10.4.Aluminium- silicon alloys, 50, 10.4 ;

wire, offeet of moch. and thermal treatment, 50, 294/1.

Bismuth (molten), effect of solution of bismuth chloride, 50, 66/1.

Cadmium, singlo crystals, 50, 596/1.Copper, 50, 658.4.Ferromagnetic materials, changes in

magnetic fields, 50, 534/1.Gold-nickel alloys, 50, 16.-1.Gold-silver alloys, 50, 474.-1.K.S. -Seewasser, 50, 10.-1.Magnesium, 50, 10.4.Magnesium alloys, 50, 732.-1.Magnesium - aluminium-silicon alloys,

50, 10.1.Magnesium-cadmium alloys, 50, 10/1.Magnesium-cerium alloys, 50, 10.4.Magnesium-copper alloys, 50, 10.-1.Magnesium-manganese alloys, 50, 10.4.Magnesium-silicon alloys, 50, 10.4.Magnesium-zinc alloys, 50, 10/4.Molten metals, change in magnotic

field, 50, 432.1.Pressed metal powders, 50, 217.4.Ruthenium, 50, 419.4.Ruthenium carbide, 50, 419/1.Silicon (molten), 50, 521.-1.Silver-copper alloys, 50, 351/1.Telcktal, wiro, cfTcct of moch. and

thermal treatment, 50, 294/1.Tungsten carbide, 50, 419.4.“ Y ” alloy, 50, 10 . 1 .Zinc, singlo crystals, 50, 596.1.

Electrical properties of—Contacts between metal and semi

conductor, 50, 293.-1.Copper films, 50, 343.4.Nickel films, 50, 343.4.Platinum films, 50, 343/1.Silver films, 50, 343.1.Zinc singlo crystals, spectroscopically

pure, 50, 3.4.Electrical resistance (soo also Electrical

conductivity),British Association standards, 1865-

1932, 50, 659.4.change at Curie point, 50, 344.-1.change caused by cold-working, theory,

50, 726.4.change produced by hydrostatic pressure,

theory, 50, 422.4.

Subject Index 829

Electrical resistance, dispersion theory applied to, 50, 599/1. effect of torsion, 50, 659/1. relation to temperature coefficient, 50,

598/1.specific, and its tomp. cooff., definition,

50, 217/i.theory, 50, 599/1.very high values, measurement, 50, 677/1.

Electrical resistance of—Aluminium, effect of cold-work, 50,

337/1.Aluminium-silicon alloys, effect of

hcat-treatment, 50, 347/1.Barium at low temps., 50, 593/1.Brass (molten), 50, 152/1.Bronze (molten), 50, 152/1.Cadmium, for temps, below 90° IC., 50,

72G/1.Constantan, A.S.T.M. test for detg.

clmngo with temp., 50, 91/1.Copper, crystals at temps, below 90° K.»

50, 72G/1 ; (molten), 50, 152/1.Copper-cadmium alloys, 50, 152/1.Ferromagnetic materials, change in

magnetic field, 50, 72/1.Films, 50, 596/1 ; prepared by cathodic

projection, 50, 72/1.Germanium, effoct o f temp., 50, 8/1.Gold, for temps, bolow 90° IC., 50, 726-4.Gold alloys, 50, 15A . Gold-silver alloys, 50, 474/1.Graphite at low temps., 50, 593/1.Heusler’s alloys, change in magnetic

field, 50, 152/1.Indium at low temps., 50, 593.4 ; for

temps, below 90° K „ 50, 720/1.Iron, change in magnetic field, 50, 152.4.Lead, for temps, below 90° K ., 50, 726/1 ;

in magnetic field at temps, bolow superconducting point, 50, 594/1.

Magnetostrictive metals, change in magnetic field, 50, 340/1.

Manganin, A.S.T.M. test for detg. .change with temp., 50, 91/1.

Molten metals, detn., 50, 152/1.Nickel, at Curie point, 50, 344/1 ; change

. in magnetic field, 50, 340/1 ; temp. coefT., 49, 288.

Platinum, for temps, bolow 90° Iv., 50, 726/1 ; thin films, variation with temp., effoct of nature of support, 50,213/1.

Platinum-iron alloys, 50, 299.4.Powdered metals under pressure, 50,

5/1. .Silicon, effect o f temp., 50, 8/1.Silver films, 50, 596/1.Silver-copper alloys, temp, coeff., 50,

351/1. Tantalum, 50, 420/1.Tellurium single crystals, effoct of an

nealing, 50, 213/4.Thallium at low temps., 50, 593/1.Thorium, for temps, below 90° K ., 50,

726.4.Tin single crystals at temps, below 90°

K ., 50, 726/1.Titanium at low temps., 50, 593/1 ; effect

o f temp., 50, 8.4.

Electrical resistance of— Tungsten films, 50, 596/1.Zinc, for temps, below 90° K., 50, 726.4 ;

(molton), 50, 152/1.Electricity, industrial, hand-book, 50,

135/1.Electrochemical industry,

progress, 50, 683/1.Swedish, 50, 100/1.

Electrochemical periodicities, 50, 684.4. Electrochemistry,

books, 50, 133/1, 283/1. industrial, books, 280/1, 285/1 (review),

404A.metals in, 50, 100/1, 453/1. report of cttco. of A.I.E.E., 50, 252/1,

317/1.Electro-deposition. See Deposition. Electro-deposits. See Deposits. Electrode potential,

equilibrium distribution, 50, 72/1. periodic changes, 50, 452/1.

Electrode potential of—Cobalt, 50, 684/1.Ferro-chromium anodes at different c.d.

and hydrate concns., 50, 637/1. Ferro-manganese anodes at different c.d.

and hydrate concns., 50, 637/4.Lead, 50, 452.1.Manganese, 50, 79/1.Manganese-iron alloys, 50, 605.4. Manganese-silver alloys, 50, 79.1. Molybdenum in potassium hydroxide

solns., 50, 637.4.Zinc, 50, 50-4 ; single crystals, 50, 452.4.

Electrodes, overvoltage. See Overvoltage. passivity. Seo Passivity. quinhydrone, prepn. and reproducibility,

50, 239.4.Soderberg, 50, 332.1.

Electrolysis— in melts of phosphates, 50, <61-4. in residual current range, effect of

applied voltage, 50, 684.4. Electrolysis of—

Alloys, molten and solid, 50, 605/1. Molten salts, book, 50, 280/1.

Electrolytes, conductivity, bridge for measurement, 50, 684.4,

Electrolytic analysis. Seo Analysis. Electrolytic deposition. Seo Deposition. Electrolytic refining. Seo Refining. Electrolytic valve action,

50, 216/1, 684.4. theory, 50, 101/1; 453/1.

Electromagnets. See Laboratory apparatus. Electrometallurgical industry, progress, 50,

683.1.Electrometallurgy,

r ep oV oi tttec. of A.I.E .E., 50, 252.4,317.1.

Electromotive force of—Alloys, variations, in formation by wot

method, 50, 494^1.Gold- silver alloys, 50, 474.4.

Electromotive forces, oxistence in d o «* ! metallic circuits of uniform temp., 5U, 351.1..

830 Subject IndexElectron (alloy). See Elektron.Electron emitting alloy, 50, 79/1.Electron theory o f motals, 50, 440.4. Electronic energy levels, connection with

sizes and olectronic states of atoms in motallic crystals, 50, 421/4.

Electrons,book, 50, 457.-1.deflection by adsorbed gaseous layers

on motallic surfaces, 50, 747.4. diffraction l>y metal surfaces, 50, 747.4. surface, 50, 440.4.

Elektron (see also M agnesium alloys), casting, 50, 154.4, 507/4 ; removal of

noxious gasos, suction apparatus, 50,508.4.

castings, porosity, 50, 007.1. characteristics, 50. 78.1. compression strength, 50, 154.4. corrosion-fatigue, 50, 42.1. drawing, 50, 155.1.dynamic strength properties, 50, 600.4. elastic properties, effect of temp., 48,

255.endurance, 50, 285.4, 558.4. endurance bending strength, 50, 154/1. extrusion, 50, 155.4.hardness, 50, 154.4 ; effoct o f porosity,

50, 6074. inflammability, 50, 17.4. machining, 50, 154.4. mechanical properties, 50, 17.1, 154.4,

430.4. melting, 50, 507.4. melting point, 50, 154.4.physical properties, 50, 17.4, 154.4, 430.4. protection by solenium and other coating

processes, 48, 147. review of data, 50, 732/1. rolling, 50, 155/1, 507.4. sand-castings, strcss-elonçation, stress-

bonding, and stress-slip diagr., 50, 726/1 ; vibration strength, 50, 726.4.

sawing, 50, 118.4. stress-corrosion cracks, 50, 738.4. tensile properties, 50, 154/1. tensile testing o f thin sheet, influonco of

shapo of test specimen, 50, 679-4. turning, tools, 50, 260.4, ultimate stress, 50, 17.4. uses, 50, 106/4, 154.4 ; in aircraft and

automobiles, 50, 17.4; in automobiles, 50, 78.4 ; in oil industry, aero and nutomobilo, and textile industries, 50,17.4.

welding, 50, 155.4 ; danger, 50, 53.4 ; o f crankcases, 50, 698/1.

Elements. See under names o f elemonts, properties, &c.

Elinvar,hairsprings for watches, 50, 381,1. review of recent work, 50, 664.4.

Elkonite, uso in glass machinery, 50, 693.1. Elongation (seo also Tensile properties,

&c. ),measurements, value in practice, 50,

150/1.small, apparatus for measurement, 50,

171.4.Eloxal process, 50, 30/1, 567/1, 669/1.

Enamelling, book, 50, 333/1.Enamelling of—

Copper wire, 50, 236.4, 702.4. Endurance. Seo Fatigue.Endurance limits of—

Magnesium alloys, 50, 474/1.Endurance properties of—

Monel metal at low temps., 50, 79.4. Endurance strength of—

Threaded rods, increase, by surface pressures, 50, 14.4.

Endurance testing. See Testing.Enduro A, corrosion by milk, 50, 302.4. Engineering,

directory, 50, 717.4. handbook, 50, 459.4. research, 50, 779.4. who’s who in, book, 50, 139.4.

Engraving blocks, correcting, by projected olectrolyte, 50, 250/1.

Entropies of inorganic substances, book, 50, 588/1.

Equilibrium diagrams,liquidus curve, does a mean horizontal

portion exist botween two eutectic points?, 50, 543/1.

ternary, 50, 665.4. x-ray study, 50, 36/1.

Erayde, 50, 665.4.Erichsen testing. Seo Testing.Erichsen value of—

Aluminium, effect of rolling, 50, 69.-1. Copper, effect of rolling, 50, 69/1.Silver, effoct of rolling, 50, 69.-1. Silver-copper alloys, effect of rolling, 50,

69.-1.Erosion of—

Turbine blades, 50, 230/1; efficiency effect on radial flow turbine, 50, 739.4.

Error, probablo, 50, 208/1, 280/1. Estimation. Seo Analysis.Etching,

crystal faces developed by, increase of surfaco area duo to, 50, 7.4.

Etching (metallographic), handbook, 50, 140.-1 (review).

Etching reagents for—Lead and its alloys, 50, 485.4, 744.4.

Eutectal, heat-treatment, 50, 224/1. Eutectics (SCO also A lloys),

binary, thermodynamics, 50, 353/1. Eutectoid alloys, tempering and annealing,

50, 256.4.Everdur,

composition, 50, 321/1. corrosion-resistance, 50, 295.4. mechanical properties, 50, 295.4. uses, 50, 321.4.welding, 50, 572.4 ; o f largo vessels, 50,

1 1 2 /1 .Expansion (seo also Volume changes), 50,

533.1.Expansion of—

Aluminium alloys, 50, 76.-1, 726.4. Bismuth single crystals, X -ray studies,

50, 593/1.Chromium (electrolytic), 50, 146/1. Copper-tin-lead alloys, 50, 729.-1. Copper-tin-zinc-lead alloys, 50, 729/1. Gold-silver alloys, 50, 474/1.

Subject Index 831Expansion of—

Heat-resisting alloys, 50, inn.!. Iron-chromium alloys, 50, 155.-1.Lead, .thermal, 50, 290.-1.Magnesium, 50, 2 .1 ; singlo crystals, 50,

212.1.Magnesium alloys, 50, 726.4. Nickel-chromium alloys, 50, 155.-1. Nickel-chromium-iron alloys, 50, 155.4. Non-cubic metals, dctn., 50, 4SO.!. Palladium, 50, 69.-1.Rhodium, 50, 00.-I.Rods, fused quartz extensometer to

measure, 50, .'112.-1.Zinc, 50, 725.-1.

Extensometers. Seo Testing machines. Extrusion, 50, 327.4, 387/1, 504.4.

defects. 50, 326.1, 327.4. deformation in, 48, 330. early experiments, 50, 320.-1. flow in, mechanism, 50, 58.4, 387-4. Hooker process, 50, 703.-1. laboratory investigations, value, 50, 5S.4. plant, 50, 326.1.power requirements, 50, 56.1, 58.-1, 387.4. presses, designs, 5 0 ,191.-1 ; hydraulic, 50,

326.4 ; improved, 50, 387.-1 ; Judgo, 50, 703.4; modern, 50, 117.1.

pressure at different temps., 50, 573.4. processes, comparison, 50, 326.-1.

Extrusion of—Aluminium, 50, 703.-1 ; oleetrolytic con

ductors, 50, 703.4.Aluminium alloys, 50, 496.1.Brass, bars, section and tubes, 50, 504.4 ;

variations in microstructure, 50,503.4, 703,1.

Elektron, 50, 155.4.Hollow sections, 50, 326A .Lead, cablo sheath, 50, 573.-1 ; cablo-

plioath, Judgo press, 50, 703/1 ; power consumption, 50, 58.1.

Magnesium alloys, 50, 496.-1.Non-ferrous metals, development, 50,

191.4.Tin, power consumption, 50, 5S.4.

Eye-protection glasses with metal coatings, 50, 094.-1.

Factor of safety, 50, 7.-1.Faraday effect in ferromagnetics, 50,

218.4.Fatigue,

atmospheric action as factor, 49, 93(Paper).

corrosion-. Seo Corrosion -fatigue. determination under alternating stresses,

50, 530.-1. discussion, 50, 291.1. effect of lanoline grease, 49, 1 0 2 . elementary discussion, 50, 469.1. historical, 50, 058.1. misconceptions, 50, 312.1. oxygen as factor, 49, 62. repeated bending during rotation, change

in mech, properties under test for, 50,468,1.

report of A.S.T.M. ctteo., 50, 290-4, 469/1,

Fatigue,review of present position, 50, 174.4. summary of present knowledge, 50,

469.4.test results, significance and limitations,

50, 469.1. testing. See Testing. testing machines, Seo Testing machines. theory, 50, 149.4, 421.4, 597,1.

Fatigue cracking, 48, 244.Fatigue fracture regularities, 50, 342.1,

725/1.Fatigue limit, determination, special

mothods, 50, 43A .Fatigue of—

Aircraft materials, 49, 102.Aluminium, 50, 530.1.Aluminium alloys, 50, 530/1.Brass, 49, 107; 50, 211.4, 753.1. Cold-drawn wires, torsional, 50, 174.1. Copper, 49, 107; 50, 211.4.Duralumin, 50, 211.4, 753/1 ; effect of

lanoline coating, 49, 103.Iron, 50, 753.1.Magnesium alloys, 50, 530.4.Magnesium-aluminium alloy, effect of

lanoline coating, 49, 103.Monel metal, 50, 753.4.Steels, 49, 107; 50, 530.4 ; effect of

lanoline coating, 49, 103.Telephone cable sheath alloys, 50, 539.4.

Fatigue strength, increasing. 50, 216/1.Feed-water, effects of impurities, 50, 83.1.Ferro-alloys,

book, 50, 784/1.report of A.S.T.M. cttee., 50, 498/1.

Ferro chromium (seo also Iron-chromium alloys),

electrode potentials of anodes nt different c.d. and hydrate concns., 50, 637--1.

Ferromagnetic materials, book, 50, 526.1. developments, 50, 605/1, 733.4. effect shown in alternating electro-mag

netic fields, 50, 218/1. elastic properties in region of Curio point,

5 0 .4 1 0 .4 .electrical conductivity, clianges in mag

netic fields, 50, 534/1. electrical resistance, change in magnetic

field, 50, 72.4. .inhomogeneities in magnetization, 50,

7 5*4.isotropic, theory of magnetization curves

in medium and strong fields, 50, 3-46.4. . . ,

magnetic permeability in high-frequency electromagnetic fields, 50, 2.4, 3-4.

magnetization, and magneto-caloric elTect, 50, 9.1 ; intrinsic, relation to other properties, 50, 10/1.

magnetostriction, 50, 73*1. regions of different ferromagnetic con

dition, method of rendering visible, 50 219/1.

remanance phenomena, theory, 50,346/1. thermoelectric properties, 50, 228.-1.

Ferromagnetic saturation of elements other than iron, nickel, and cobalt, 50,74.4.

832 Subject IndexFerromagnetism,

and electrical properties, 50, 218.4. Faraday effect, 50, 218/1. new experimental methods, 50, 312/1. part played by conduction electrons, 50,

344.4.phenomena, interpretation, 50, 345.4. theory, 50, 75.4.

Ferromagnetism of—Manganese-boron alloys, 50, 220.4. Manganese-nitrogen alloys, 50, 226/1. Nickel, associated with conducting elec

trons, 50, 346.4.Niekel-chromium alloys, 50, 733/1. Nickel-manganese alloys, and phase con

figuration, 50, 20/1, 430/1.Ferro-manganese, electrode potentials of

anodes at different c.d. and hydrate conens., 50, 637/1.

Ferro-molybdenum, A.S.T.M. tentativo specifications, 50, 322/1. **

Ferro-tungsten, estimation of tin, 50,670/1.Fescolizing, 50, 682.4.Filaments (sco also T-ungsten, &c.),

heated in vacuo, burning-out, 50, 3.4. hot, reactions at surface, 50, 340/i, 341.4. oxide-coated, electrolytic phenomena, 50,

70.4 ; origin of enhanced emission, 50, 220/1, 634/4.

tenacity, piezo-electric detn., 50, 446/1.Films,

adhesion to metals, detn., 50, 359.4. crystalline structure, 50, 237.4, 552.4,

617/1,effect of aeid vapours, 50, 292/1. electrical properties, 50, 343.4. electrical resistance, 50, 596.1. electrodeposition, 50, 565.4. magnetic properties, 50, 599/1. mounting under tension, 50, 624.1. registration of cathode rays, 50, 292/1. sputtered. See Sputtered film s. structure, apparatus for examination,

50, 16.1.thin, connection between olcct. conduct*

ivity and structure^ 50, 37/1 ; functional relations between sp. resistance and thickness, 50, 37/1 ; importance o f study, 50, 37/1 ; prepared by cathodic projection, elect, properties, 50, 72/1 ; prodn. by cathodic sputtering, 50, 71.4 ; sp. resistance and structure as functions o f temp., 50, 37/1.

Finishing. See Colouring, Deposition, &c.Firebox. Seo Locomotive#.Firebrick. See Refractory materials.Fireclay. Seo Refractory materials.Fissures, physical natures and significance,

50, 71/1.Flaws, detection, 50, 625.1.Flow lines, 48, 319.Flow of—

Solid metal aggregates, 50, 659.1.Flow pressure at low temps., 50, 291/1.Flow surfaces,

arrangement, in rolling, 48, 322. formed during transverse compression of

cylinders, 48, 323. theoretical course, 4S, 321.

Flowability. See Castubility.

Flue gases, corrosion o f sprayed metal coatings, 50, 230/1.

Fluidity, compression, 48, 48, 59. pressure Of, and Bridgman’s hydrostatic

coilapso pressures, 48, 57 ; Stead's tonsiio value “ a ” and, 48, 58 ; wiredrawing and, 48, 63.

Fluidity of—Annealed metals, pressure of, 48, 47

(Paper).Fluxes, 50, 194.1.

requirements, 50, 506/1.Fluxes for—

Aluminium, 50, 263/1.Magnesium alloys, comparison, 50,

266/1.Precious metal drosses, 50, 266/1, 331/1.

Fogging of—Nickel, 48, 121 (Paper).

Foils (seo also Alum inium , had , tin , &e.), cold-cutting, -punching and -stamping,

development. 50, 191/1. deposition, 50, 565/1. manufacture, 50, 185/1. uses, 50, 185.1.

Food containers, tinplate. Sco Tinplate. Foods, coatings resistant to, 50, 234.4. Forging of—

Aluminium alloys, 50, 110/1, 192/1. Brass, variations in microstructurc, 50,

503/1, 703/1.Duralumin, 50, 110/1.Hiduminium E.E. alloys, 50, 110/1. Magnesium alloys, 50, 192.4.“ Y ” alloy, 50, 110/1.

Farming,die, for radiator fins, 50, 574/1, 767/1. tools, 50, 118/1.

43 alloy. Sco Alum inium alloys.Foundry,

calculations, 50, 268/1. congress, Milan, 1931, report, 50, 717/1 ;

Paris, 1931, resumé of papers, 50,708.4.

costs, control, 50, 770/1. defects, 50, 770.1. economies, 50, 122.1. equipment, 50, 1 2 2 .-1 . large and small, 50, 122/1. metallurgist, duties, 50, 769/1. practice, book, 50, 141.1 (review), 404/1,

525/1, 591/1 (review ); brass, seo B ra ss ; developments, 50, 122.4;ferrous and non-ferrous compared, 50, 769/1 ; non-ferrous, recent developments, 50, 194/1.

. railway, G.I.P., 50, 769/1.Fracture,

complete, structural variations, 50,342.4.

fatigue-. See Fatigue. under repeated stress. See Fatigue.

France,Chambon-Feugerolles, history of metal-

lurgy at, book, 50, 404/1.Frary metal, 50, 1 0 2 /1 , 510/1.Frazing machine, 49, 395.Freezing point of—

Platinum, 50, 68/1.

Subject Index 833Fruit juices, action on chromium-plating,

50, 3764.Fruit preserves, corrosion by, 50, 4354.Fuels (soo also Coal, Coke, &c.),

consumption in metallurgical works, 50, 3934, 3944.

for copper-refining furnaces, comparison, 50, 3934.

for iron and steel industry, 50, 5134. heat of combustion, 50, 2714. review of work dono in 1931, 50, 3944. solid, mechanism of combustion of

individual particles, 50, 3944. technical data, book, 50, 7834. testing, 50, 5204.

Furnaces, adaption of mirrors, 50, 1294. aluminium melting, olect., 50, 1974. annealing, heat balance, calculation, 50,

58 24 ; hoat-transfor to non-ferrous metals, 50, 4504.

automatic control, 50, 7704.Brandt, 50, 1304.brass melting, use of iron and steel in,

50, 3314.brazing, 50, 18G4; with controlled

atmosphere, 50, 1314. coal dust-fired melting, without crucibles,

50, 5114.copper melting, uso of iron and steel in,

50, 3314.copper-refining, comparison of fuels, 50,

3934.core-baking, gas-fired, 50, 1304. decentralization, in continuous produc

tion plant, 50, 4504. design, 50, 5114.electric, 50, 7704 ; advances, 50, 1304 ;

Ajax—W yatt, for molting Muntz metal, material and heat balance, 50, 5114 ; atmosphere control by eloctroleno producer, 50, 1 3 14 ; Ajax-VVyatt, soamless refractory shells for, 50, 5 8 3 4 ; stopping and restarting, 50, 5834; Birloc continuous conveyor, 50, 5 1 2 4 ; designs, 50, 1974;development of industries based on, role of Moissan, 50, 0424; for wire galvanizing, 50, 324 ; indust, appns., 50, 2 7 0 4 ; Miguet uni-phase, 50, 0 4 24 ; patent classifications in U.S. Patent Office, 50, 1984, 7774 ; principles o f design, 50, 3324 ; regulation by tension variation, 50, 7774 ; rhodium alloys for windings, 50, 6 4 34 ; Russ, 50, 1984, 7774 ; tungsten wire, for very liigh temps., 50, 2 7 04 ; Wild-Barfield, improvements, 50, 6434.

electric annealing, 50, 2714, 5124, 5834, 7774 ; (bright-), for copper sheet, 50, 0 9 44 ; continuous, for metal bands, 50, 2 7 1 4 ; continuous, for strip, 50, 7 0 54 ; economy and thermal efficiency, 50, 3 3 24 ; for aluminium, 50, 1854, 3924, 58 34 ; for brass strip, 50, 2 7 1 4 ; for copper coils, 50, 5114 ; for strip, 50, 5 7 04 ; large, 50, 2704.

electric arc, automatic control, 50, 3324 ; VOL. L.

Furnaces,rocking, appns., 50, 5834, 7774; rôle play od by self-induction, 50, 3934.

electric heat-treatment, 50, 3934, 6424 ; conveyor-type, 50, 3934 ; for aluminium sheets, 50, 5114; types, 50, 5124.

electric induction, corôless, 50, 3934; for crucible melting, 50, 7764 ; high- frequency, 50, 3934 ; high-frequency, for molting silver, 50, 5834 ; high* froquoncy ironless, development, 50, 2704 ; installed at French works, 50, 5 1 14 ; low-frequency, development, 50, 1314 ; metallurgical characteristics, 50, 51 14 ; with ferromagnetic muffle and automatic temp, regular, 50, 2704, 3934.

electric melting, 50, 6424, 6434 ; for aluminium, 50, 1974, 3924, 3934; for brass, experiences, 50, 1314 ; for copper, experiences, 50, 1314 ; for copper and its alloys, experiences, 50, 1314.

electric resistance, calculations, 50, 51 14 ; for high temps., tests on resistance materials, 50, 3934 ; improved, 50, 1314 ; with Nichrome lieating elements, 50, 6434.

fuel-fired, comparative values of heat of coal, oil, and gas, 50, 6424.

galvanizing, olect., 50, 324, 1304,3314, 3924.

gas-fired, advantages over oil and electricity, 50, 5124 ; burner design, 50, 1304 ; controlling devices, 50, 2704; developments, 50, 5104;developments in burners, 50, 5124 ; for core-baking, 50, 1304 ; for high temps., 50, 2704 ; for molting brass, 50, 1304 ; gas pressure regulation, 50, 1304; industrial, 50, 1304;investigation and calculation of burners, 50, 5824 ; Novopress, 50, 5104 ; ro-cireulation system, 50, 3924 ; single-point control, 50, 5104 ; temp, control, 50, 1304.

gas-fired annealing, 50, 7764; for aluminium, 50, 7764.

gas-fired bright-annealing for copper wire, 50, 5824, 7704.

gas-fired heat-treatment for wire, 50, 5834.

gas-fired melting, 50, 5824. hardening, temp, control, 50, 7774. heat balance, 50, 5824. heat transfer, 50, 1294. heat-treatment at Koltchugalumin works

(CJ.S.S.K.), 50, 51 24 ; electric, see F u rn a ces , electric heat-treatm ent ;modem, 50, 3924.

heating elements, chromnim-mckel, reduction of deterioration, 50, 7764.

Helberger, universal melting, 50, 5824. industrial, book, 50, 4604. inspection window, 50, 1294. laboratory. See L aboratory appara tus. melting for aluminium, stationary-

hearth, 50, 7764 ; so mi-rotary, for4a

834 Subject IndexFurnaces,

gun-metal, 50, 582-1 ; small, relative merits o f gas and oil as fuel, 50, 776A .

metallurgical, book, 50, 207/1;mechanical stokers, 50, 642/1.

normalizing, Kathner, 50, 511/1. oil-fired, advantages, 50, 642/1 ; ellip

soid, 50, 130/1, 392.4; for brass molting, 50, '392/1; types, 50, 642/1.

oil-fired tieat-treatinent for wire, 50,583-1. open-hearth, fundamentals of design,

50, 643.4. recent types, 50, 129-4. reverberatory, for molting brass scrap,

50, 390/1, 773-4 ; pulverized fuel installations, 50, 269.4.

soldering, Amiantha, 50, 129.4. temperature distribution, 50, 331/1. thermal efficiency, 50, 129.4. wall losses, calculation, 50, 331/1.

Furniture,metal, possibilities and design, 50, 323.4

(see also Alum inium , &c.).Fusible alloys,

properties, 50, 640/1. uses, 50, 640-4.

Fusible metal,plugs, failure, 50, 229/1, 692/1 ; for

boilers, 100 examined, 50, 426/1 ; in colliery boiler plant, 50, 692-4.

Fusion, latent heat of. See Latent heat o f f usion.

Gallium, bibliography, pamphlet, 50, 137/1. crystal structure, 50, 616/1. dealers and importers, pamphlet, 50,

137/1.estimation, electrolytic, 50, 442/1 ;

quant., 50, 240/1. history, pamphlet, 50, 137-4. markets and prices, pamphlet, 50, 137/1. metallurgy, pamphlet, 50, 137/1. occurrence, pamphlet, 50, 137/1. production, pamphlet, 50, 137.1. properties, pamphlet, 50, 137/1. separation, 50, 88/1.

Galvanic circuit, theory, 50, 101/1.Galvanized iron and steel,

adherence of coatings, 50, 163/1. brittleness, 50, 361.4, 482/1, 612/1. embrittlement, 50, 743.1, 714.4 ; report

of A.S.T.M. sub-cttee., 50, 550.4. field tests, report of A.S.T.M. sub-cttee.,

50, 550/1. painting, 50, 743/1.Preece test for coatings, factors affecting,

50, 481-4, 670/1. quality of zinc coating, detn., 50, 611.4. report of A.S.T.M. cttee., 50, 306/1,

549/1.testing of coatings, cliom. methods, 50,

30.4.welding, 50, 765/1 : of sheet, 50, 188.1. “ white rust,” 50, 609/1 ; prevention,

50, 235/1.Galvanizing,

baths, cause o f blue scum, 50, 31.4 ; use o f tin, 50, 31/1.

Galvanizing, continental practice, 50, 612.4. corrosion between pickling and, 50, 482.4,

483.1. developments, 50, 31.1. effect on endurance properties of steel,

50, 482.4, 670/1. electro-, advantages, 50, 163.1 ; struc

ture of coatings, 50, 163/1. flux conditioners, 50, 670/1. fluxing, theory of mechanism, 49, 176. furnaces, olectric, 50, 331/1 ; electric, for

wire, 50, 130/1.“ hard zinc ” formation, 50, Gll/1. hot-, cadmium-zinc baths, 50, 360/1 ;

effect on cold-worked stool, 50, 670.4 ; mechanical aids, 50, 482/1 ; now method of heating, 50, 612.4 ; reactions occurring in, 49, 169 (P aper) ; scum caused by aluminium, 50, 31-4 ; versus electro-, 50, 30.4, 31/1, 235/1,306.4, 743.4; versus slierardizing, 50, 163/1.

mechanism of process, 50, 611/1. modern, 50, 84.4. muriatic acid dip, 50, 482/1. pickling, improved method, 50, 612/1. problems, 50, 163/1.removal of iron salts derived from

pickling bath, 50, 611.4. report of A.S.T.M. cttee., 50, 306.1,482/1. sal-ammoniac for, 50, 670.4. skimmer, 50, 438-1, 743-1. sulphuric acid pickle, 50, 483/1. weight of zinc deposited, effect of water

soaking steel, 50, 611/1. wire, 50, 235/1.zinc used, suitability, 50, 743/1.

Galvanizing of—Structural steel, embrittlement, selected

bibliography, 50, 235/1.Wire, elect, furnnco for, 50, 32.4 ;

hot- versus electro-process, 50, 30/1, 31/1, 235-1, 306/1, 612/1, 743/1 ;new' flux, 50, 306/1.

Galvanometers. See Laboratory apparatus.Galvanotex process, 50, 317/1.Gas(es) (see also under names of gases),

absorption by hot metals, 50, 470/1. adsorbed, diffusion, 50, 343/1. adsorption by solids, general discussion,

50, 457/1 ; use of. thcrmionics in study, pamphlet, 50, 524/1.

combustion, book. 50, 649.1. corrosion by, 50, 436.1. dissolved, “ internal pressure,” 49, 317,

341, 344. estimation in metals, 50, 674/1. evolution from metals during heating,

50, 343/1.heating value, calcn. from analysis, 50,

271/1.in metals and alloys, 50, 736.1 ; sum

mary o f literature, 50, 149-4 ; theories, 50, 470/1.

influence on metals, 50, 215.4. liberation from metals, effect o f pressure,

49, 317 (Paper).occluded, effect on mech. properties,

50, 725.4.

Subject Index 835

Gas(es),occlusion by metals, summary of litera

ture, 50, 1494. removal, from aluminium alloys by

mixtures of nitrogen and volatile chlorides,49,301 (P aper) ; fromalumin- ium and its alloys, 50, 209.4, 4174, C574 ; from metals and alloys, 50, 3434, 4704.

solubility in metals, 50, 4704. sorption by solids, book, 50, 13G4, 206/1. town’s, appn. in motor-cyclo industry,

50, 5124 ; appn. in tinplato works, 50, 5124 ; for annealing of brass, 50, 534 ; indust, uses, 50, 2714, G424.

use in non-forrous melting, 50, 3944.Gas-fired furnaces. Seo Furnaces.German language, chemical terms, book,

50, 2884 [review).German silver. Seo N ickel-brass.Germanic sulphide, quantitative conversion

to oxide by hydrolysis, 50, 3094.Germanium,

bibliography, pamphlot, 50, 137.4. dealers and importers, pamphlot, 50,

137/1. electrical resistance, effect o f temp., 50,

8.1.history, pamphlot, 50, 1374. markets and priccs, pamphlot, 50, 1374. metallurgy, pamphlet, 50, 1374. occurrence, 50, 1374, 2904. preparation, 50, 2904. production, pamphlet, 50, 1374. properties, 50, 1374, 2904. separation from nrsonic, quant., 50,

2404.Germany,

aluminium industry, laboratories, 50, 5194.

Deutsche Bunsen-Gesellschaft, report of 30th meeting, 50, 1414.

Deutsche Versuchsanstalt für Luftfahrt, report, 50, 5924 (review).

Dr.-Ing dissertations, index for 1923- 1927, 50, 2884 (review).

Finow Brass Foundry, Ebcrswalde, 50, 5194.

Forschungsinstitut für Edelmetalle, Schwäbische-Gmund, 50, 047,4.

Kaiser Wilhelm Institut für Metallforschung, importance of work, 50, 3984 ; origin and development, 50, 398/1. ̂

Mctallgesellschai't, rcsoareh laboratories, 50, 5184.

Osnabrück Copper and Wire Works, history, 50, 5194.

Technische Hochschule, Breslau, metallography and general phys.-chom. metallurgy at, 50, 518/1.

Gittcrmetall, 50, 7314.Glasses, eye-protection, with metal coat

ings, 50, 0944.Glucinum. See Beryllium .Glyptal, 50, 0704. Gold,

action of nitric acid, 7394. action of sulphuric acid, 50, 7394. assay, effect of platinum group metals,

50, 4884 ; o f bullion, effect o f anneal-

Gold,ing on surchargo, 50, 2384 ; vol.. 50, 3654.

assay beads, surface effects caused by platinum metals, 50, 441.4.

atomic heat, 50, 2164. bullion, assay, effect of annealing on

surchargo, 50, 2384 ; dio-sampling at Sons of Gwalia Gold Mine, 50, 874.

colouring, 50, 5044. crystal structure and rolling, 50, 1894. deposition, 50, 2494 , 45 04 ; by salt

water method, 50, 504.1 ; cyanides in rolation to, 50, 404, 984, 248/1 ; propn. of baths, 50, 5644.

deposits, arrangement of micro-crystals, 50, 6164.

diffraction patterns, 50, 7474. diffusion of copper, rate, 50, 3394. 18-carat. See Gold alloys. electrical resistance, change under hydro

static pressure, 50, 422/1; for temps, below 90° K ., 50, 7264.

estimation, potcntiomotric, with cuprous chloride soln.. 50, 620/1 ; quant., by hydrazine hydrochloride, 50, 168/1.

films, crystallino structure, 50, 2374 ;elcctrodeposition, 50, 5654.

fine, supplementary plate, 50, 204/1. (low-pressure, at low temps., 50, 2914. 14-carat. Seo Gold alloys. lattice parameters, 50, 3624. metallurgy, book, 50, 524.-1 ; develop

ments, 50, 3794.micro-crystals,olectrodoposi tod,arrange

ment, 50, 616/1. mineral resources, of California and

Oregon, U.S.A., 50, 1344 ; of Canada, 50, 6524 ; of eastern states of U.S.A., 50, 134/1; of Idaho and Washington, U.S.A., 50, 1344 ; of Nevada, U.S.A., 50, 134/1, 5884 ; of U.S.A., 50, 1344 ; of Utah, U.S.A., 50, 1344.

photoelectric properties, 50, 2134» -1 9 4 ;of thin unbacked films, 50, 147/1.

plates, hardness, 50, 5944. ̂ production, statistics, 50, 3794. recovery from tin slimes, 50, 5204. refining, book, 50, 4574 ; electro-, 50,

494 ; electro-, in Japan, 50, 49/1. reflection of long X-rays, 50, *64. residues, recovery, 50, 648.4. rolling, crystal structure and, 50, i»J /i. surface tension, 50, 3394. tensile properties of whole and soldered

wires, 50, 594/L uses, history, 50, 763/1.“ white.” Seo White gold. wires, whole and soldered, tensile tests,

50,594.1.Gold alloys (seo also White gotId),

assay, correct sampling, 50, loJA . coinage, use of carborundum for melting

in'olect. furnace, 50, 1994. dilute solid solutions, elect, properties,

50, 154. . ,18-carat dental plates, cast and swaged,

observations on, 50, 6624.14-carat, history, compn. and proper

ties, 50, 6624.

S36 Subject Index

Gold alloys,for electrical contacts, 50, 6044. thermoelectric force down to very low

temps., 50, 4224.Gold-antimony alloys,

constitution, X -ray study, 50, 354. crystal structure, 50, 354.

Gold-bismutk alloys, super-conductivity, 50, 164.

Gold-cadmium alloys, constitution, electro- chera. study, 50, 7284.

Gold -copper alloys, action of nitric acid, 50, 7394. action of sulphuric acid, 50, 7394. atomic susceptibility curves, deviation

from theoretical curves, 50, 374. constitution, 50, 7294 , 7304 ; thermo

dynamic study, 50, 7294.£ elastic limit, 50, 4744.

equilibrium diagram, 50, 476/1. films, lattice parameter, 50, 164. hardness, 50, 4744.

■ improvement, recent work, 50, 124.2 lattice constants, 50, 164.L phase equilibrium conditions, equations,

50, 3534.r single crystals, action of reagents, X -raj'n study, 50, 3554, 4804.

solid solutions, phvsico-chemical study,48, 312.

transformations in solid state, 50,7304.

Gold-iron alloys, magnetic properties, 50, 1534.

Gold-lanthanum alloys, constitution, 50, 1534.

Gold-lead alloys, galvanic potentials, 50, 3504.

Gold-mercury alloys, constitution, 50, 4284. solubility of gold, 50, 6634.

Gold-nickel alloys, electrical conductivity, 50, 164. phase equilibrium conditions, equations,

50, 3534.Gold-palladium alloys,

atomic susceptibility curves, deviation from theoretical curves, 50, 374.

equilibrium diagram, 50, 4764. hydrogenized, photoelectric and thermo

electric effects, 50, 5424. lattice constants, 50, 864, 5534 ; of

solid solus., 50, 4864. phase equilibrium conditions, equations,

50, 3534.Gold-phosphide, density, dissociation pres

sure and heats of formation, 50, lti4 .

Gold-platinum alloys, age-hardening by small addns. of iron,

50, 774.atomic susceptibility curves, deviation

from theoretical curves, 50, 374. constitution, 50, 864. crystal structure, 50, 864, 5534. equilibrium diagram, 50, 4764. lattice constants of solid solns., 50, 4864.

Gold-silver alloys, action of nitric acid, 50, 7394. action of sulphuric acid, 50, 7394.

Gold-silver alloys, atomic susceptibility curves, doviation

from theoretical curves, 50, 374. constitution, 50, 214. diffusion coefficient, influence of temps.,

50, 2914. electrical conductivity, 50, 4744. electrical resistance, 50, 4744. electromotive force, 50, 4744. equilibrium diagram, 50, 4764.Hall effect, 50, 296/1; relation to lattice

constant, 50, 354. lattice constants, relation to Hall

effect, 50, 354. potential measurements, 50, 214. properties, as functions o f compn., 50,

4744.solid solutions, method of study, 50,4744. tensile properties, 50, 4744. thermal expansion, 50, 474*4. thermoelectric effect, 50, 4744. thermoelectric force down to very low

temps., 50, 4224.Gold-silver-copper alloys, equilibrium

diagram, 50, 4764.Gold-tin alloys, crystal structure, 50,

364.Grain-boundary material, properties, 50,

2444.Gramophone records, manuf., 50, 4514.Graphite,

bricks. See Refractory materials. electrical resistance at low temps., 50,

5934.Gravimetric analysis. See A nalysis .Gravity casting. See Die-casting.Great Britain,

British Engineers’ Association, handbook, 50, 5254.

British Non-Ferrous Metals Research Association, tentativo proposals for researches o f basic character, 50, 5214.

British Standards Institution, 50, 4024; index of standard specifications, 50, 1334.

chemical industry, history, book, 50, 2874 (review).

Department of Overseas Trade, guide to services of, 50, 2064.

Department of Scientific and Industrial Research, report, 50, 1344.

Federation of British Industries, register, 50, 5254.

National Physical Laboratory, report, 50, 4054 ; report of Dept, of Metallurgy and Metallurgical Chemistry, 50, 5224 ; report of Electricity Dept., 50, 5234 ; report of Engineering Dept., 50, 5224 ; report of Metrology D ep t, 50, 5244 ; report of Physics Dept., 50, 5234.

Royal Mint, report, 50, 014. scientific and learned societies, year

book, 50, 024, 7834.Grinding,

allowances, 50, 7074. practice, in automobile industry, 50,

1934. solutions, 50, 5794.

Subject Index 837Grinding of—

Aluminium alloys, 50, 121/1, 707.1 ;pistons, 50, 579/1.

Chromium-plated gauges, 50, 579/1. Magnesium alloys, 50, 707/1.Monel metal balls, contreloss, 50, 707.-1. Vee tools, 50, 121/1, 262/1.

Grinding wheels, breakage, caused by unovon heating,

50, 579/1. manufacture, 50, 121/1. smooth finish, 50, 193/1.

Gun-metal (soo also Bronzes and under names of constituent metals),

brittle constituent, 50, 225.4. melting furnace, semi-rotary, 50, 582.-1.

Hafnium, occurrence, 50, 290/1. pamphlet on properties, prodn., &c., 50,

138/1.preparation, 50, 290/1. properties, 50, 138/1, 290-4, 418.4. sources, 50, 418/1. uses, 50, 418/1.

Hall effect, law of change in magnetic field, 50,

344.4.thermodynamic study, 50, 423/1. with audio-frequency currents, 50, 596.1.

Hall effect in—Antimony, inducod effect, 50, 145.4. Beryllium, 50, 594A .Bismuth, inducod effect, 50, 1*45.1. Copper-cadmium alloys, 50, 152/1. Gold-silver alloys, 50, 296.1; relation to

lattice constant, 50, 35/1.Mercury (solid), 50, 212.4, 418.4.Molten metals, 50, 9/1.Tellurium, reversals, 50, 724.1 ; with

audio-frequency currents, 50, 596.4. Tellurium amalgams, 50, 227/1.

Hardening, by rotating magnetic fields, 50, 216.1,

470A , 597/1, 660/1. strain-. See Strain-Jiardcning.

Hardening of—Non-ferrous metals, 50, 323.4.

Hardness, change caused by bending, 50, 659/1. influence of magnetic fields, 50, 6.4. relation to effective flow tension, 50,

447/1.relation to tensile strength, 50, 754/1. sclerometric, decrease, duo to adsorption

of active substances at surface of contact, 50, 5A .

testing. See Testing. testing machines. See Testing machines.

Hardness of—Aluminium, change caused by bending,

50, 659/1; offect of rolling, 50, 69/1. Aluminium alloys, at various temps.,

50, 726/1.Aluminium-“ bronzes,” 50, 601-4.Armco iron, effoct of cold-rolling, 50,

6 / 1 .Brass, change caused by bonding, 50,

659/1 ; offcct of cold-rolling, 50,

Hardness of—6.1 ; offoct of difforent elements, 49, 257 ; offoct of porosity, 50, 607.4.

Bronze, effoct of casting conditions, 50, 607/1.

Chromium, 50, 67/1 ; as determined by Vickors-Brinoll, Biorbaum and Mohs methods, 50, 338/1, 722.4.

Copper, (annealed), 50, 211/1; at high temps., 49, 24 4 ; change caused by bending, 50, 659/1 ; effoct of cold- rolling, 50, 6/1 ; offoct of rolling, 50, 69/1.

Copper-tin alloys, 50, 426.4.Duralumin, change caused by bending,

50, 659.4.Electro deposits, 50, 760/1.Electrolytic metals, 50, 725.4.Elektron, 50, 154A ; offoct of porosity,

50, 607.1.Gold-copper alloys, 50, 474.4.Iron alloys, effoct of dispersion harden

ing, 50, 731.4.Magnesium, change caused by bending,

50, 659/1.Magnesium alloys, at various temps.,

50, 726/1.Monel metal at low temps., 50, 79.4 ;

effoct of cold-rolling, 50, 6/1. Palladium, 50, 3.4.Palladium-rhodium alloys, 50, 80-4. Platinum-iron alloys, 50, 299.4. Platinum-palladium alloys, offoct of

hoat-treatmont, 50, 80/1.P.M.G. alloy, 50, 295.1.Silumin, effect of porosity, 50, 607.1. Silver, effect of rolling, 50, 69/1. Silver-copper alloys, 50, 351-1; effect

of rolling, 50, 69-4.Single crystals, sclerometric, decrease

duo to adsorption of active substances at surface of contact, 50, 5-4.

Steels, effoct of cold-rolling, 50, 6.4. Strontium-cadmium alloys, 50, 157.4.

Hardness testing. Soo Testing.Haveg, 50, 48A .Heat emission, measurement, now ap

paratus, 50, 94-4.Heat-resistant materials (soo also undor

names o f various inotals and alloys), 50, 70.4, 83.1, 298/1, 605-1, 741.4.

compositions and manufacturers, 50, 29-4.

requirements, 50, 227/1. survey of literature, 50, 227A . thermal expansion, 50, 155-1.

Heat-treatment (see also Age-hardening, Annealing, &c.),

at Citroën works, 50, 695-1. books, 50, 524-4, 587.4. furnaces. See Furnaces. recent progress, 50, 185.1. scale resulting from, removal, 50, ot 8-1.

Heat-treatment of—Aluminium, 50, 382.1, 694.4 ; book,

50, 653/1 (review); by immersion procoss, 50, 382-4, 499-4.

Aluminium alloys, 50, 110/1, 2-4^4, 382/1, 694.4 ; aircraft parts, 50,382-4, 499.4 ; book, 50, 653A (review).

838 Subject IndexHeat-treatment ol—

Aluminium copper silicon alloys, SO,222.4.

Brass, 50, 382.-1, 499.-1 ; strip in continuous annealing furnace, 50, 094.-1.

Duralumin, 50, 110.4.Hiduminium RR alloys, 50, 110.1.Light alloys, 50, 110.1.Magnesium alloys, 50, 004.-1. Silver-copper alloys, effect on mech.

properties, 50, 351.1.Strip in continuous annoaling furnace,

50, 094.4.“ Y ” alloy, 50, 110.4.Zinc alloy dio-castings, 50, 53.-1.

Herbert pendulum hardness testing machine. Seo Testing machines, hard-

Herculoy, 50, 003.4.Herolith, 50, 30.-1.Heusler’s alloys, electrical resistance,

change in magnetic field, 50, 152.1.Hibbo, properties, 50, 14.1.Hiduminium (see also Alum inium alloys,

“ Jilt.50 ” ), forging, 50, 110.4. heat-treatment, 50, 110.1. production methods, 50, 389.4. properties, 50, 001.1.

High-temperatures, characteristics of metals revealed by

bonding, 50, 243.4. eliect on properties of metals, 50, 470.4,

471.4 ; bibliography, 50, 534.-1 ; symposium, 50, 531.4-534.4.

mechanical properties of metals at, 50,533.4.

properties of alloys at, 50, 159.4, 737.4. properties of materials at, 50,459.1,477.4. requirements for metal, in automobilo

industry, 50, 532.1 ; in ceramic industry, 50, 532.-1 ; in chemical industry, 50, 531.1 ; in non-ferrous roasting, smelting and refining industries, 50, 532.1 ; in oil industry, 50, 531.-1 ; in oil-refining industries, 50, 343-4 ; in power plant industry, 50, 531.-1 ; in steam piping, 50, 531.-1.

use of metals at, trend o f progress in Great Britain, 50, 532.-1.

High-voltage research laboratory, 50,402.4.Hipernik,

improvement by heat-treatment, 50, 000,1.

magnetic permeability, 50, 733.4.Honorary Treasurer, report, 48, 13.Hot-forging. See Forging.Hot-galvanizing. Seo Galvanizing.Hot-pressing. Soo Pressing.Hot-rolling. See Rolling.Hungary, scientific work, bibliography, 50,

281.-1.Hyblum,

advantages, 50, 223.1. corrosion-resistance to milk, 50, 303.-1.

Hydrochloric acid, corrosion by. Seo Corrosion,

Hydrogen, absorption by platinum black at 0° C.,

50, 08-4.

Hydrogen,adsorption by platinum black, 50, 09.4 ;

by platinum metals, 50, 530.4. ions, book, 50, 20G.-1. occlusion by metals, 50, 343.1. overvoltage. Seo Overvoltage.

Hydrogen peroxide solutions, behaviour of aluminium and its alloys in, 50, 433.4.

Ice, adhesion to metals, 50, 401.4.Impact strength of—

Die-casting alloys, effect of temp., 50,477.4.

Monel metal at low temps., 50, 79.4. P.M.G. alloy, 50, 295.4.

Impact testing. See Testing.Impurities, effects of, 50, 4.4, 5.4, 420.4. Inco, 50, 004.-1.Indium,

bibliography, pamphlet, 50, 137,1. chemical properties, 50, 594.4. dealers and importers, pamphlot, 50,

137.4. deposition, 50, 594.4.electrical resistance at low temps., 50,

593^1.history, pamphlet, 50, 137.4. markets and prices, pamphlet, 50, 137.4. metallurgy, pamphlet, 50, 137,4. occurrence, 50, 2.4, 137.4. physical properties, 50, 594.-1. production, pamphlet, 50, 137.4. properties, 50, 2.1, 137.-1. thermal conductivity at low temps., 50,

-4G0.-1. uses, 50, 594,4.

Industrial management, book, 50, 132.4. Ingots, cooling, in ehill-raoulds, 50, 772.4. Insects, attack of metals by, 50, 343.4. Inspection of metals, 50, 079.4. Intermetallic compounds,

binary, attempt to produce single-crystals, 50, 308.-1.

diffusion of components, 50, 38.4. law of additive atomic heat not valid

for, 50, 478.4. structure analogies and anomalies, 50,

352,1, 477.-1. x-ray spectra, 50, 34.4.

Internal friction, measurement, 50, 42.-1. Internal stress (seo also Season-crocking),

determination by X-rays, 50, 43.4. effect on magnetic susceptibility, 50, 75.4. magnetic analysis, 50, 597.1.

Internal stress in—•Brass tubes, 50, 14.4.Cold-rolled plates, 50, 729.4.Solids in absonco of external forces, 50,

737.4.Invar,

magnetic properties at high temps., 50, 595.-1.

review of rccont work, 50, 004.4. Inventor, psychology, book, 50, 137.4. Inverse segregation in—

Aluminium copper alloys, 50, 471.4. Bronze, 50, 600.4.Silver-copper alloys, 49, 347 (P a p er);

50, 299A .

Subject Index 839Iodine,

action on platinum and tungsten, 50, 684.

corrosion of metals, 50, 3034.Ionization potentials, IIume-Rothery rela

tionship between atomic numbers and, 50, 421.-1.

Iridium (seo also Platinum metals),electrical resistance for temps, bolow

90° K „ 50, 7204. estimation, 50, 3094 ; gravimetric, 50,

7494.lattice parameters, 50, 3624. melting point, 50, 2894. properties, 50, 204.separation, from platinum and other

metal si 50, 3094. separation of rhodium, 50, 7494. specific heat, between 0° and 1604° C.,

50, 4184 ; dependence on temp., 50, 7264.

uses, 50, 204.Iridium arsenide, preparation, 50, 204.Iridium-platinum alloys,

constitution, 50, 2994. ferromagnetic, 50, 5424. filaments, reactions at surface, 50, 3404. lattice constants o f solid solns., 50, 4864. properties, 50, 204, 3514. substitutes, 50, 3514. uses, 50, 204.wires for uso in Eotvos torsion balance»

effect of heat-troatmont, 50, 3424.Iridosmine, pamphlet, 50, 1384.Iron,

action of beer, 50, 6094. action of coffee, 50, 7404. action of tea, 50, 7404. aluminium coatings by spraying process»

50, 3064. aluminium-plated, 50, 2344. analysis, book, 50, 6564 (review).Armco. See Arm co iron.Barkhausen effect, transverse, 50, 744. cadmium plating of castings* 50, 1764,

3144.cast, use in non-ferrous industry, 50,

2754.cementation by chromium, 50, 6144. characteristic frequency, 50, 714. chemistry, book, 50, 5264. cold-rolled plates, internal stress, 50,

7294.cold-worked, lattice arrangement, 48,

329.colouring, 50, 5044.corrosion, 50, 2 7 4 ; by bloaching

liquors in textile industry, 50, 4354 ; by citric acid, 50, 1614; by distilled water and salt solns., prevention by addn. of sodium dichromate, 50, 3584 ; by hot vapours of cracked petrol, 50, 2304 ; by phosphoric acid, 50, 4364 ; field tests of metallic coatings, report of A.S.T.M. sub- cttee», 50, 3 0 44 ; in Duffek’s apparatus, 50, 2294 ; report of A.S.T.M. cttee., 50, 5494.

creep, 50, 5584.density, efloct o f torsion, 50, 6594.

Iron,diffusion of tin, 50, 224, 3524. diffusion of zinc, 50, 4704. electrical resistance, change in magnetic

field, 50, 152.1 ; chango under hydrostatic pressure, 50, 4224 ; effect of torsion, 50, 6594.

estimation, by means of basic mercuric bromate, 50, 2404 ; (small amts.) in copper. 50, 6754.

fatigue, 50, 7534. fibre structures, prodn., 50, 764. films, rnagnotic properties, 50, 5994. fluidity, pressuro of, 48, 53. foundry, handbook, 50, 1424 (review). galvanized. Seo Galvanized iron and

steel.hardening by hammering, 50, 1104. literature, review for 1931. 50, 2824. magnetic permeability, dependence on

field at high-frequency, 50, 3444 ; in H.-F. electromagnetic fields, 50, 24 , 34.

magnetic properties, at high temps., 50, 5954 ; of films, 50, 5994.

malleable castings, symposium, 50, 2054.

patent literature, book, 50, 7824. protection against corrosion by galvaniz

ing, 50, 2354. rigidity, modulus, chango due to cold-

working, 50, 2164. specific heat, depcndonco on temp., 50,

7264.stainless, book, 50, 5284 (review). tensile stresses in, dependence on rate

of strain, 50, 2914. thermomagnetic effects, 50, 3404. titanium coatings, 50, 5514. torsion, effect on density, dimensions

and elect, resistance, 50, 6594. valence, book, 50, 6524. veining or sub-boundary structures, 50,

6144.wire, elastic extension undor longi

tudinal stress, 50, 704 ; magnetic permeability in Il.-F . weak fields, 50, 3444.

Iron alloys, dispersion hardening, effect on magnetic properties and hardness, 50, 7314.

Iron-aluminium alloys, 50». 114. crystal lattice, 50, 3084, 4864. oxidation-resistance, at high temps., 50,

2224.superlattice, formation, 50, 3624.

Iron-aluminium-chromium alloys, constitution, 50, 6004.

Iron-aluminium-silicon alloys, aluminium- rich, constitution, 50, 114, 2234.

Iron amalgams, 50, 3504. colloidal nature, 50, 2274.

Iron and Steel Institute, Joint Autumn Meeting with, 49, 13.

Iron-bery Ilium alloys, properties, 50, 2954.

Iron-carbon-chromium alloys, constitution, 50, 7284.

Iron-carbon-vanadium alloys, constitution, 50, 6064 , 7354.

840 Subject IndexIron-chromium alloys (seo also i ’crro -

chromium), constitution, 50, 13.4, 349.1, 536.4. deposition, 50, 96.4. lattice constants, 50, 165.4. mechanical properties, 50, 349/1. report o£ A.S.T.M. cttee., 50, 295.4,

475.4.thermal expansion, 50, 155.4. x-ray investigation, 50, 13.4, 164.1,

349/1.Iron-chromium-nickel alloys,

constitution, 50, 18/1. corrosion by milk, offects of operating

conditions in variouR parts of pasteurizing equipment, 50, 435/1.

dilatometric study, 50, 13.1, 349/1. electrical resistors for high temp.

■service, 50, 606/1. for electrical heating elements, drawn or

rolled, A.S.T.M. tentative specifications, 50, 107/1, 422/1.

properties, 50, 298/1, 475/1 ; effect of temp., 50, 540.1, 541.4.

report of A.S.T.M. cttee., 50, 295.1, 475/1.

thermal expansion, 50, 155/1. uses, 50, 298/1.

Iron-chromium-nickel-carbon alloys, constitution, 50, 77/1, 295/1.

Iron-cobalt alloys,equilibrium diagram, 50, 224/1.Joule magnetostrictive effect in rods,

50, 729/1.magnetic properties at high temps.,

50, 595/1.Iron-copper alloys, thermoelectric force

down to very low temps., 50, 422.4.Iron-copper-nickel alloys,

deposition, 50, 96/1, 682/1 ; from cyanido soins., 50, 248/1.

Iron-gold alloys, magnetic properties, 50, 153/1.

Iron-manganese alloys, constitution, 50, 78/1, 79.1, 297/1, 732.4,

733/1.crystal structure, 50, 79/1, 732.4. dilatometric study, 50, 297.4. electrode potentials, 50, 604/1. transformation characteristics, 50, 226/1. x-ray study, 50, 297/1.

Iron-manganese-carbon alloys, equilibrium diagram, 50, 226.4. preparation, 50, 78.4, 296/1, 732.4.

Iron-mercury alloys, solubility of iron, 50, 298/1.

Iron-molybdenum-carbon alloys, equilibrium diagram, 50, 297.4.

Iron-nickel alloys (seo also Perm alloy, &c.)f a r z z y transformation, 50, 19/1. core loss current, measurement by means

of o.c. potentiometer, 50, 605/1. elastic limit, magneto-elastic phenomena

in relation to, 50, 350/1. fibre structures, prodn., 50, 76/1. hydrogen-overvoltage, 50, 252/1. improvement by licat-treatment, 50,

605/1.magnetizing current, measurement by

means of a.e. potentiometer, 50, 605/1.

Iron-nickel alloys,magneto-elastic phenomena in relation

to elastic limit, 50, 350/1. magnetostriction, 50, 156.1. oxygen-overvoltage, 50, 252.4. phase equilibrium conditions, equations,

50, 353.4.strain and magnetic orientation, 50,

664/1.use in moter and instrument design, 50,

311/1.Iron-nickel-arsenic alloys, constitution,

50, 298/1.Iron-nickel-cobalt alloys, mechanical pro

perties at high temps., 50, 18.4,79/1.

Iron-nickel-manganese alloys, as rheostat materials, 50, 227.4.

Iron-nickel-sulphur alloys, constitution, 50, 298/1.

Iron nickel-tungsten alloys, hot structural hardening, 50, 430/1.

Iron pentacarbonyl, offect of addn. to mercury, 50, 350/1.

Iron-platinum alloys, electrical resistance, 50, 299/1. hardness, 50, 299/1. microstructure, 50, 299/1.

Iron sulphides, tbormocliomistry, 50,661.4.

Iron-tin alloys, constitution, 50, 22/1, 352/1.

Iron-tungsten alloys, a -y loop, compn. limits, 50, 227/1,

Iron-tungsten-carbon alloys, constitution, 50, 23.4.

Iron-vanadium-oxygen system, constitution, 50, 735.4.

Isotopic constitution of somo metals, 50, 66 / 1 .

Japan, National Research Council, report, 50, 651.4.

Jirotka process, protection o f magnesium alloys, 48, 152.

Kanthal resistances for higli-temp. elect, furnaces, 50, 393/1.

Kaolin. See Refractory materials.Kester, 50, 696.4.Koltchugalumin, paints for, investigation,

50, 484.4.Konel

filaments, oxide-coated, emission of oloctrons, 50, 220/1.

mechanical properties at high tomps., 50, 18.-1.

properties, 50, 108.1.K.S.-Seewasser,

corrosion, 50, 479/1. corrosion-fatigue, 50, 42/1. corrosion-resistance, 50, 348/1 ; effect of

heat-treatment, 50, 30-L4. electrical conductivity, 50, 10/1. endurance, 50, 285/1.Lorenz number, 50, 10/1. mechanical properties, 50, 348/1. properties, 50, 601/1.

Subject Index 841K.S.-Seewasser,

sand-castings, stress-olonjjation, stress- bonding, and stress-shp diagr., 50, 720/1 ; vibration strength, 50, 720.4.

thermal conductivity, 50, 10.1. uses, 50, CO 1/1; in mines, 50, 500.1.

Kuprit, 50, 048-4.

Laboratories,foundry, organization, equipment and

operation, 50, 049/1.industrial research, of U.S.A., reference

book, 50, 334/1.planning and fittings, book, 50, 415.1

(review).

LABORATORY APPARATUS—Appliances, plating to resist corrosion,

50, 077/1.Balance, assay, permitting 100 weigh

ings in £ lir., 50, 557/1 ; for measuring magnetic susceptibilities, 50, 40/1.

Calorimeter, vacuum, for high temps., 50, 022/1.

Carbon dioxide indicators, 50, 445/1. Catalyst chamber, 50, 312/1.Cathode-ray oscillographs, glass or metal

discharge tubes, 50, 173/1 ; improvements in tub© design, 50, 173/1 ; recording of non-periodic phenomena with, 50, 172/1.

Cathode-ray tubes, high-voltage, 50, 91/1.Constant-level device, automatic, for

liquid air, 50, 022/1.Constant-temperature cells for micro

scopic observations, 50, 023/1.Constant temperature device, improved,

50, 242/1.Crucibles, rhodium, 50, 022/1.Crystal analysis, self-contained appar

atus, 50, 242/1.CrystaUograph, X -ray, Hilger, 50, 41/1.Cubic-crystal analyzer, 50, 41/1.Debye camera for high temp, observa

tions, 50, 75G/1.Dilatometers, Chovenard, modification,

50, 489/1 ; isothermal, 50, 077/1 ; now form, 50, 445/1.

Displacement measurer, 50, 023.4.Electrical apparatus for moasuromont of

small displacements, 50, 40/1.Electrical gauge for moasuring infinitesi

mal dimensions, 50, 92/1.Electrical instruments, absolute repeat

ability, dotn., 50, 172/1.Electrolysis stand, 50, 024.4.Electromagnets, dotn. of wire sizos for,

50, 172/1.Electronic devices, improvements, 50,

078/1.Elongation marker, glass-scratch, meas

urements with, 50, 171/1.Elongation measurer, 50, 171/1.Evaporation apparatus for high vacua,

50, 022/1.Exhibition, 50, 750-4.Furnaces, oiloct o f nature and mode of

wiring on non-uniformity of temp., 50, 171/1 ; elect., for high temps., 50,

Laboratory Apparatus—307/1 ; electric, for tensile tests at high temps., 50, 40/1 ; oloct,, rhodium wire for, 50, 489/1 ; electric, voltage regulator, 50, 171/1; H.-F. oloctric, Lorenz, experiments with, 50, 170/1 ; H .-F. oloctric, Ribaud, oxporiments with, 50, 170/1 ; tubular, olect. mothod of thermal regulation, 50, 489.4.

Galvanometers, fino motallic suspensions, effect o f hoat-troatment, 50, 342/1 ; Julius suspensions, 50, 078/1.

Gauges, 50, 023/1.Geometrical design, 50, 445.4. Hydrogen sulphide generators, ,50, 173.4.Illuminators, microscope, Reichert

opaquo, 50, 40/1 ; photomicrographic, Busch “ Univortor,” 50, 170/1.

Lattice projecting ruler and chart, 50,024.4.

Laue camera, improved, 50, 078.1.Load-deformation, 50, 244.4.Marten’s mirror apparatus, simplifica

tion, 50, 750/1.Mercury vapour lamps, 50, 078.1. Metallographic polishing machines, auto

matic, 50, 170/1.Metaphot pliotomicrographic apparatus,

50, 170/1.Micrometer microscopes, 50, 171-4.Micrometers, Magister, 50, 307/1.Microscope illuminator, dark field, 50,

550.1.Microscope objectives, apochromatic, Jat-

oral chromatic aberration, 50, 550-4.Microscopes, exhibition, 50, 750/1 ; his

tory, book, 50, 715/1 ; measuring; 50, 023-4 ; metallurgical, 50, 749-4 ; meta- lurgical, with camera attachmont, 50, 023-4 ; polarization, 50, 91.4 ; polarization, appn. in study of copper alloys, 50, 439/1 ; small invert©«, 50, 40.4 ; universal objoct table, 50, 023/1 ; Vickers projection, 50, 550.4.

Optical instruments for examining and analyzing motals, book, 50, 403/1.

Pantograph for enlarging X-ray photographs, 50, 024/1.

Photoelectric cell, uso in hoat-treatment, 50, 307/1.

Photomicrographic, Metaphot, 50, 1/0/1.Polishing machine, metallographic, 50,

40/1.Potentiometers, Feussner typo, improved,

50, G22.4 ; recording, Brown, 50,621A ; Wennor, 50, 022/1.

Precision gauge, electric, of groat accuracy, 50, 242/1, 078/1.

Pyrometers. See Pyrometers.Quartz mercury lamp, for lab. and tech.

use, 50, 312.1.Rheostat, Dodge, theory, 50, 022/1.Tantalum as material for, 50, 445-1.Temperature and humidity recorder, com

bined, 50, 242-4.Temperature regulators, 50, 94-4, n i A ,

175/1, 445/1 ; for elect, resistance furnaces, 50, 021-4; Pro tos vacuum switch for, 50, 171-4 ; recording automatic, 50, 028/1.

842 Subject IndexLaboratory Apparatus-

Testing machines. Soo Testing machine*. Thermal appliances, exhibition, 50,

757/1.Thermocouples. Sco Thermocouples. Thcrmomagnetometer, registering, 50,

6 7 7 .4 .Thermometers, mercury, 50, 680.1; mer

cury, pamphlet, 50, 133.-1 ; time lag, 50, 628.-1.

Thermopiles, radiation, 50, 561.1. Thermoregulators, potontiomotric, 50,

489.-1.Thermostat regulator, 50, 557.1. Thermostats, air, for corrosion resoarch,

50, 28.-1 ; aperiodic, 50, 677.-1 ; new types, 50, 171.-1; precision, for temps, from —26° C. to 500° C., 50, 621.-1 ; sensitive flexible, 50, 621.-1.

Torsion balance for moasuring radioactivity, 50, 41.-1.

Vacuum apparatus, industrial, 50, 367.1. Valve for high-vacua, greaseless and

chemically inert, 50, 678.1.Vertical optimeter, internal attachment

for, 50, 678.-1.Voltage regulator for furnace control,

50, 171.1.X-ray analytical equipment, 50, 367.1. X-ray apparatus, Debyo-Seherrer type,

50, 41.-1; for powder analysis, 50, 41.-1.

X-ray camera for powdor diagr. at any tomp., 50, 624.-1.

X-ray micrograph for examination of metallic specimens, 50, 623.-1.

X-ray spectrographs, 50, 678.-1 ; oscil- lator for crystal, 50, 678.1.

X-ray spectrometer, doublo crystal, 50,624.1 ; for wave-length detns. in air, 50, 624.4 ; precision, 50, 750/1; with stationary ion chamber, 50, 624.1.

X-ray tubes, gas, for crystal structure analysis, (50, 678.1 ; Hadding, 50, 489.-1; high-voltage, 50, 91.4; oil- immersed, 50, 624.-1 ; 200,000 v ., 50,750.4.

“ L ” alloys. See Alum inium alloys.Laboratory organization, functions, 50,

407.1.Lacquering, 50, 120/1.

book, 50, 333.4. equipment, 50, 670.-1.

Lacquering of—Aluminium, 50, 263.4.Tinned food container, 50, 439.4.

Lacquers, developments, 50, 743.1. for metal aircraft structures, investiga

tion, 50, 484.4.Parabernoi, 50, 670.4.wear, testing apparatus, 50, 679.1.

Ladles,bottom pouring, hand, 50, 127.4. improved, 50, 127/1.

Lanolinę, protection of copper, 49, 155. fatigue tests of materials coated with,

49, 102.

Lanthanum, spectra, indox, 50, 63.1. Lanthanum-copper alloys, constitution,

50, 153.-1.Lanthanum-gold alloys, constitution, 50,

1 5 3 .1 .Lanthanum-lead alloys, constitution, 50,

1 5 3 .4 .Lanthanum-magnesium alloys, constitu

tion, 50, 153.1.Lanthanum mercuride, 50, 540.4. Lanthanum-silver alloys, constitution, 50,

1 5 3 .1 .Lanthanum-thallium alloys, constitution,

50, 153.1.Lanthanum-tin alloys, constitution, 50,

1 5 3 .4 .Latent lieat of fusion, nature, 50, 5.1.Lathe tools, lifo, theory and equation for,

50, 784.-1.Lattice constants,

determination, X -ray equipment, 50, 367.-1.

pamphlet, 50, 406-4. precision measurements, 50, 363.1. tables, 50, 308/1.

Lattice constants of—Aluminium, 50, 362.1.Aluminium-silver alloys, 50, 164.-1,

238.4.Beryllium, 50, 615.4.Columbium, 50, 165.-1.Copper, 50, 362.4.Copper-silver alloys, 50, 486.4.Gold, 50, 362.1.Gold-copper alloys, 50, 16.-1.Gold palladium alloys, 50, 80/1, 553.-1;

solid soins., 50, 486.4.Gold-platinum alloys, solid soins., 50,

486.-1.Gold-silver alloys, relation to Hall

effect, 50, 35.4.Iridium, 50, 362.4.Iron-chromium alloys, 50, 165.4.Lead, 50, 362.1.Magnesium-manganese alloys, 50, 155.4. Molybdenum, 50, 362.-1.Nickel, 50, 362.1.Palladium, 50, 362.1.Platinum-iridium alloys, solid soins., 50,

486/1.Platinum-rhodium alloys, solid soins.,

50, 486.4.Rhodium, 50, 362.4.Silver, 50, 362,1.Silver-palladium alloys, 50, 86.1, 553.1 ;

solid soins., 50, 4S6.-1.Tantalum, 50, 362.4.Tungsten, 50, 362.4.

Lattice structures (soo also Crystal structure), review o f present knowledge, 50, 38.1.

Laue diagrams. Seo Crystal structure. Lautal (seo also Alum inium alloys, &c.),

cadmium-plated, resistance to soa- wator, 50, 742.-1.

chemical properties, 50, 223.1. corrosion, protective action of sodium

silicate, 50, 433.-1. corrosion-fatigue, 50, 42.4. dynamie strength properties, 50, 600.4. clastic hysteresis curves, 50, 347.-1.

Subject Index 843Lautal,

elastic properties, effect of temp., 43, 255. endurance, 50, 285/1, 558/1. ladders, 50, 254/1. mechanical properties, 50, 222.-1. physical properties, 50, 223.4. riveting, 50, 095/1 ; o f sheet coated with

veneer, 50, 571.1. rivets, hollow, closing, 50, 095/1. sand-castings, stress-olongation, stress-

bending, and stross-slip diagr., 50, 72G/1 ; vibration strength, 50, 726/1.

stress-corrosion cracks, 50, 738.4. tensile testing o f thin sheet, influence of

shapo o f test specimen, 50, 079.-1. threaded rods, incroaso o f onduranco

limits by surface pressures, 50, 14/1. use, in mines, 50, 566.1 ; in omnibuses,

50, 374/1 ; in railway waggons, 50, 179/1.

wires, tonsion-olongation diagr. between 20° and 300° C., 50, 600/1 ; vibration strength between 20° and 300° C., 50,600.4.

workshop practice, recommendations, 50, 223.1.

Lead,action of coffee, 50, 740.4. action of tea, 50, 740.1. allotropy, 50, 211/1, 339.1. analysis, book, 50, 59/1. anodes, for chromium plating, 50, 95.4 ;

for electrolytic zinc prodn., investigation, 50, 251 A.

anodic polarization in aquoous soins., 50, 610/1.

atomic heat, 50, 216.4, 467.1. bullion, dotn. o f silvor, 50, 310.-1. burning, on London building, 50, 113.4. cable-sheath, 50, 52.4 ; A.S.T.M. tenta

tive specifications, 50, 105/1, 322/1 ; corrosion by paper and jute wrapping, 50, 25/1 ; corrosion by phenol in tar coating, 50, 356.4 ; corrosion, effect of antimony and tin, 50, 356.-1 ; corrosion underground, 50, 356/1 ; cracking* 50, 731/1 ; creep, 50, 723.1 ; damage and protection underground, experiences o f 35 American com panies, 50, 25A ; failuro, 50, 322.4 ; improvement, 50, 322/1 ; microexamination, propn. of specimons, 50, 485.4, 744.4 ; prodn., 50, 573/1.

castability, 50, 329/1. characteristic frequency, 50, 71.1. coatings, Leadliesion process, 50, 551/1. compressibility at olevated tomp., effect

of small % o f cortain metals, 50, 466/1.

compression fluidity, 48, 48, 56. contamination of water by, 50, 355.4,

379.4.corrosion, by distilled water and salt

soins., prevention by addn. of sodium dichromate, 50, 358.1 ; by hot vapours of cracked petrol, 50, 230/1 ; by iodine, 50, 303.1 ; by mortars and concrete, 50, 161/1 ; by sea-water, 48, 109; by vinegar, 50, 667/1 ; by well water, 50, 355.4 ; of cablo-sheath, by paper

Lead,and jute wrapping, 50, 25.4 ; of cable sheath by phenol in tar coating, 50, 356.1 ; of cablo-sheath, experience of 35 American companies, 50, 25/1 : of cablo-sheath underground, 50,355.4.

corrosion-resistance to gases, 50, 436.4. creep of cable-sheath, 50, 717.4, 723.1. debismuthizing with calcium, 50, 276.1,

277.4.deposition, 50, 317.4 ; book, 50, 69.4 ;

bv means of oxy-acetylono blowpipo, 50, 84.4 ; for corrosion-resistance,50, 371.-1; practical hints, 50, 96.4.

deposits, as protection against corrosion in mines, 50, 481.4 ; corrosion-resistance, 50, 371.4.

destruction by ultra-radiation, 50, 289.1. detection, colorimetric, 50, 553.1. developments, 50, 520.1. diffusion of metals in, 50, 723.4. dilatation, 50, 423/1. effect of bismuth on metal used for

accumulator plates, 50, 289.4. electrical resistance, change under hydro-

static prossure, 50, 422.4 ; for temps, below 90° K., 50, 726.4 ; in magnetic field at temps, below super-conducting point, 50, 594/1.

electrode potential, 50, 452.4. estimation, anodic pptn. of load per-

oxido, 50, 89.1 ; electrolytic, detn. of factor for converting woight of oloctrodeposited load peroxide into lead, 50, 442/1; gravimetric, bymoans of thermobalance, 50, 241.4 ; in Babbitt, vol., 50, 168.4 ; in compds. and alloys, quant., by adsorption method, 50, 553.1 ; of small amounts, colorimetric, 50, 553.1 ; vol., by oxalate method by analysis of ppt. or of soln., 50, 488.4 ; vof., with sodium carbonate, 50, 168.1.

etching reagents, 50, 485.4, 744.4. extrusion, effect of small % of certain

metals, 50, 466.4 ; of cable sheath, 50, 573.4; of cablo-sheath, Judge press, 50, 703.4 ; power consumption, 50, 58.-1.

extrusion pressure, minimum, 48, 51. films, registration of cathode rays, 50,

292.4.flow, pressure-, at low temps., 50, 291.1. fluidity, pressure of, 43, 53. hardness, change at 200° C., 50, 211/1. indentation fluidity, 48, 49. lattice parameters, 50, 362.4. magnetic susceptibility, offoct o f plastic

doformation, 50, 660/1. microscopic examination, prepn. of speci

mons, 50, 485.4, 744.4. mineral resources, of California and

Oregon, U.S.A., 50, 134A ; of eastern states of U.S.A., 50, 134.4 ; of Idaho and Washington, U.S.A., 50, 134.4 ; of Nevada, U.S.A., 50, 134.4; of U.S.A., 50, 527.1.

moulding, 50, 317.1. paints, Nust, 50, 484.4.

844 Subject IndexLead,

permeability to X-rays, 50, 680**1. pipe joints versus leadito und cement,

50, 183.4. plates for storage batteries, 50, 09LI. poisoning, recognition, 50, 521.1. refining, developments, 50, 520-4 ; elec

trolytic, 50, 317-4 ; failures o f cast- iron kettles, 50, 401/1; Harris process, theory and practice, 50, 520.1; liquors, working-up, 50, 048-4 : now refinery and its operation at Bunker Hill 8molter, 50, 521.4 ; of residues, &c., 50, 204-4.

residues, rocovery, 50, 204.1. separation, from copper, olectrolytic, 50,

631/1; from iron, quant., 50, 107-4 ; from zinc, nickel and manganese by hydrogen sulphide, 50, 674.1.

sheet forchem. purposes, manu f.,50,503.4. single crystals, sclerometric hardness,

decrease due to adsorption of active substances at surface of contact, 50, 5/1.

softening, 50, 211-4. soldering, 50, 53-4.specific heat, effect o f cold-work, 50, 8-4. spectra, index, 50, 63/1. superconductivity, 50, 418.1; at high

frequencies, 50, 217-4. supercooling and formation of nuclei,

50, 148^1. thermal expansion, 50, 290.1. thermoelectric force down to temp, of

liquid helium, 50, 339/1, 418.4. tubes for domestic water pipes, 50, 455-4. uses, 50, 379/1.water pipe, behaviour in servico, 50,

106-4 ; tin-lined, 50, 106/1. welding, 50, 113-4, 384.4 ; autogenous,

50, 697-1 ; autogenous, history, 50, 113/1, 698-1; books, 50, 589-4, 651/1; oxy-acotyleno, 50, 54/1.

wire, elastic extension under longitudinal stress, 50, 70.4.

Lead alloys (see also Babbitt metals, Bearing metals, Solders, &c.),

acid containers, difficulties of production and advantages, 50, 52A .

analysis, 50, 676/1.anodes for electrolytic zinc j)rodn., in

vestigation, 50, 251A . bearing, comparative tests with tin-base

alloys, 50, 7 3 4 4 ; effect of addns. of readily fusiblo metals, 50, 604-4 ; effect o f arsenic, 50, 429-1; mecli. properties at different temps., 50, 429/1 ; mecli. properties, effect of pouring and mould temps., 50, 153.1, 731/1.

B.N.F.M.R.A., corrosion-resistanco in buildings, 50, 301/1.

cable sheath, 50, 52/1; corrosion, 50, 379/4 ; creep, 50, 723-4 ; micro-oxam- illation, prepn. of specimens, 50, 485/1, 744/1.

corrosion, relation of grain-sizo and eutectic, 50, 437.1.

corrosion-resistance (B.N.F.M .R.A.) in buildings, 50, 301/1.

Lead alloys, creep o f cable-sheath, 50, 717.4, 723.1. estimation of antimony, rapid method

o f dissolving alloys preparatory to, 50, 676.4.

estimation of tin, rapid method of dissolving alloys preparatory to, 50, 070/1.

etching reagents, 50, 4S5.4, 744.1. for die-casting, 50, 323.1. microscopic examination, prepn. of speci

mens, 50, 485/1, 744.1. ternary, B.N.F.M .R.A., rocent appns.,

50, 731/1.welding, autogonous, history, 50, 113.4,

«98.4.Lead-aluminium alloys, constitution, 50,

151.1.Lead-antimony alloys,

anodes for chromium plating, 50, 95.4. boiling point curves, 50, 730.4. etching reagents, 50, 485.4, 744.1. magnetic susceptibility, 50, 354.4.

Lead- antimony-tin alloys, effect of thorium, 50, 154.4. microstructure, 50, 78.1. scrap, treatment, 50, 521.1.

Lead-bismutli alloys, boiling point curves, 50, 736/1. deposition, 50, 032.4. electrolysis of solid, 50, 665A . solid solutions, 50, 425.4. superconductivity, 50, 604/1.

Lead-bismuth-magnesium alloys, boiling point curves, 50, 730/1.

Lead-brasses, analysis, 50, 538.1.Lead-bronzes,

bearings, friction and abrasion, 50, 253/1. centrifugal casting, 50, 711.1. corrosion, 50, 355/1. effect of casting temperature, 50, 225/1. effect of iron, 50, 225.4. for bearings, 50, 179.1. freezing temperature, 50, 290.1. mechanical properties, 50, 101.4 ; effect

of antimony, 50, 537.4. porosity, avoidance, 50, 196/1.

Lead-burning. Soo Lead.Lead-cadmium alloys, boiling point curves,

50, 730.1.Lead-cadmium-antimony alloys, bearing

properties, 50, 17/1.Lead-calcium alloys,

bearing, 50, 349.4. cable-sheaths, 50, 349.4.

Lead-copper alloys, for bearings, 50, 040.1. miscibility gap, 50, 16/1. separation o£ two phases on cooling, 50,

77/1, 152/1.Lead-copper-tin alloys, miscibility gap,

50, 16.1.Lead-gold alloys, galvanic potentials, 50,

350/1.Lead-lanthanum alloys, constitution, 50,

153/1.Lead-magnesium alloys, boiling point

curves, 50, 736.1.Lead-nickel-cadmium alloys,

age-hardenable, 50, 296/1. solid solubility of NiCd.,, 50, 296/1.

Subject Index 845Lead oxide-antimony trioxide system, rela

tion to loud softening, 50, 211/1.Lead peroxide, electrolytic coating of

metals with, 50, 162/1.Lead-silver alloys, solid solubility of lead

at 285° C., 50, 5.-1.Lead-sodium alloys, X -ray study, 50,431.1.Lead-thallium alloys,

boiling point curves, 50, 730.1. superconductivity, 50, 004.-1. thermal conductivity at low temps., 50,

474.1.Lead-tin alloys (soo also Solders, &e.),

constitution, 49, 207 (Paper). equilibrium diagram, 49, 281. etching reagents, 50, 485.-1, 744.-1. eutectic, compn., 49, 282, 285. foil, colouring, 50, 192.1. production from slags, 50, 205.1.

Lead-tin-brass, physical properties, factors atTocting, 50, 427/1, 731.-1.

Lead-tin-bronzes, as bearing alloys for severo sorvico, 50,

003/1. constitution, 50, G03/1.

Lead-tin-copper alloys. See Lecul-bronzes. Lead-zinc alloys,

boiling point curves, 50, 730/1. eutectic, 50, 78.4.

Lead-zinc-bronze(s), freezing temperatures, 50, 290.4.

Leadhesion process, 50, 551/1.Legal, corrosion-fatigue, 50, 42.4.Library, report, 48, 5.Light, piano-polarized, in microscopic

investigation of ores and motals, 50, 3 1 1/ 1.

Linings, metal, homogeneous, 50, 109.4.Linseed oil, corrosion o f aluminium kettles,

50, 82.-1.Liquation in—

Silver-copper alloys, 49, 347 (P a p er); 50, 299/1.

Liquid metals. Seo M olten metal*.Lithium (seo also Alkali metals),

atomic weight, 50, 06.-1 . bibliography, pamphlet, 50, 137.1. detection by tlamo coloration, 50, 673.4. electrical resistance, chango under

hydrostatic prossuro, 50, 422.4. history, pamphlet, 50, 137/t. isotopic constitution, 50, 00.4. markets and prices, pamphlet, 50, 137.4. mineral industry of British Kmpiro

and foroign countries, 50, 050/1. occurrence, 50, 290.4. preparation, 50, 290/1. producers and dealers, pamphlet, 50,137.4. production, 50, 137/1, 418.1, 498.4. properties, 50, 289.-1, 290.-1. separation, by isoamyl alcohol, 50, 309.-1. spectra, index, 50, 03.1. uses, 50, 137.4, 455/1, 498/1. vaporization, latent heat of, 50, 339/1. vapour pressure, 50, 418.-1.

Lithium alloys, proportios, 50, 289.4.Lithium-aluminium alloys, 50, 425/1.Lithium amalgams,

electrolysis, 50, 80^4. liquid, elect, conductivity, 50, 733/1.

Lo-Ex, 50, 727/1.Local Sections,

Honorary Secretaries, addresses, 48, 8. programmes, 1931-1932, 48, 8.

Locomotives, firebox plate, copper, brittleness, 50,

723/1.firebox stays, copper, two-diam., prodn.

at one operation, 50, 503.4. firebox stays and plates ot copper, ex

periences in England and Germany, 50, 07/1.

fireboxes, welding, 50, 112/1, 383/1. 384.4,500.4.

tube plates, copper, welding, oxy-acety- lone, 50, 112/1.

London Autumn Meeting, 49, 13.Lorenz number for light alloys, 50, 10/1.Low temperatures, effects on metals and

alloys, 50, 533/1.Lubricating oils, adhoronco to motallie

surfaces, 50, 277.4.Luders lines, 48, 319.

Machinability, measurement-, 50, 704.4.Machinability of—

Brass rod, 50, 200/1.Machine tools, 50, 767.1.

application of hydraulic power, 50, 261.4. developments during the past fifty years,

50, 261.-1.electric drive, rccont developments, 50,

261/1.from user’s point of view, 50, 261/1. measurement, 50, 367.4.

Machined surfaces, smoothness, apparatus for measurement, 50, 367.4.

Machining, accurate, 50, 387.4.Machining of—

Aluminium, 50, 575.4 ; crankcases, 50, 575/1; cylinder blades and gear boxes, 50, 388.-1, 704.-1 ; with tungsten earbido tools, 50, 570.4.

Aluminium alloys, 50, 496.4, 575.4 ;pistons, 50, 259.4, 388/1, 704/1.

Birmabright, 50, 001/1._Brass, lubrication, 50, 767.-1.Bronze, lubrication, 50, 767/1.Elektron, 50, 154.4 ; turning tools, 50,

200 / 1.Magnesium, 50, 184.4 ; precautions, 50,

118/1.Magnesium alloys, 50, 184.4, 496/1. Monel metal, 50, 118.4.

Macrography, electrolytic method, 50, 744.-1.

Macrography o f— Bearing alloys, 50, 237.4.

Macrostructure of cast alloys, effect of turbulence duo to gases, 50, 352.4.

Magnesite. Seo Refractory materials.Magnesium,

as deoxidizer, 50, 429.4. boiling point at atm. prossuro, 50, i30.4. creep, 50, 474.4. ,crystals, phys. properties, 50, b iA . detection, 50. 366.4 ; by coloured drop

reactions, 50, 441.4. developments, 50, 379/1.

846 Subject IndexMagnesium,

elastic constants of singlo crystals, 50, 212.-1.

elasticity, 50, 2 .-1 . electrical conductivity, 50, 10.1. electrical resistance, change under

hydrostatic pressuro, 50, 422.-1. electrolytic production, selection of

method, 50, 251.-1. estimation, technique of oxinato pptn.,

50, 241/1.extraction, 50, 380/1, 001.1 : olectro-

lytic, from carnallitc, 50, 318.4. films, pliotoolect. properties, 50, 454.-1 ;

registration of cathodo rays, 50, 292.-1. flux, 50, 104.4.hardness, cliango caused by bonding,

50, 059.-1. industry, American, 50, 419.4.Lorenz number, 50. 10.4. machining, 50, 184.1 ; precautions, 50.

118/1.mechanical properties, 50, 154^1. melting, viscosities o f fluxes and slags,

50, 710.4. metallurgy, 50, 154.1. mineral resources of U.S.A., 50, 138.4. photoelectric properties of films, 50.

454.4.physical properties, 50, 154/1. production, 50, 147.-1 ; direct, by electro

lysis of molten material, 50, 372.-1. properties, 50, 147.-1, 289.4. pure, prepn. by sublimation, 50, 07.1,

530.4. purification, 50, 2.1. rolling texture, 50, 303.-1.separation of calcium by sodium tung-

state, 50, 442.1. single crystals, physical anisotropy, 50,

2.4. 530.1 ; phys. properties, 50, 212/1; plastic deformation, 50, 2.4,530.4.

spectra, index, 50, 03.4. sublimation in vacuum, 50, 2.4. thermal conductivity, 50, 10/1. thermal e.m.f. of singlo crystals, 50,212.1.thermal expansion, 50, 2.4 ; of singlo

crystals, 50, 212/1. uses, 50, 147.4, 380/1, 004.1, 091.1 ;

in elect, industry, 50, 04U.4. working, 50, 154.4".

Magnesium alloys (seo also Dowmelal, Elektron , Ac.),

anti-friction, 50, 225.1. behaviour in regard to Wiedemann-

Franz Law, 50, 732/1. brands, tablo of properties, &c., 50,

154.4.cast, proposed revisions of A.S.T.M.

tentative standards, 50, 321.-1 ; report of A.S.T.M. etteo., 50, 321.4.

castability, 50, 329.4. casting, 50, 507.1, 709.1. castings, A.S.T.M. tentative specifica

tions, 50, 106/1, 322.-1. chemical properties, 50, 604.4. corrosion, 50, 355.4, 651,1, 740/1. creep, 50, 474.1.

Magnesium alloys, cutting, 50, 490.-1. die-pressing, 50, 496.4. drawing, 50, 496.4. dynamic properties, 50, 474.1. electrical conductivity, 50, 732.-1. extrusion, 50, 496.1. fatigue, 50, 530/1.fatigue strength, increasing. 50, 210.1. fluxes, comparison, 50, 266.1. for I.C.E. cylinders, tests, 50, 726.-1. forging, 50, 192.-1.friction resistance at various temps.,

50, 720/1. grinding, 50, 707.4. hardness at various temps., 50, 720/1. heat-treatment, 50, G04/1. machining, 50, 184.4, 490.1. manufacture, 50, 663.-1 ; maximum

qualities and minimum tolerances from normal, 50, 710.4.

mechanical properties, 50, 154.-1, 496.4 ;at elevated tomps., 50, 534-4.

melting, 50, 507.-1, 709.1. microstructure, 50, 151.1. physical properties, 50, 004.-1. plastic working, X-ray study, 50, 740.-1. plasticity under prolonged static loading,

50, 474.1. properties, 50. 2S9/1, 663.4. protection, against corrosion, 50, 234.4 ;

against corrosion by pickling processes, 50, 742.4 ; by oxido films, pamphlet, 50, 717/1 ; by selenium and olliercoatingprocesses,48,147 (Paper).

rolling, 50, 496/1. solid solutions, 50, 2.1, 530/1. stamping, 50, 192.-1. thermal conductivity, 50, 720/1, 732/1. thermal expansion, 50, 720.4. uses, 50, 154.4, 603.4 ; in aircraft, 50,

763/1 ; in aircraft engines, 50, 184.-1,691.1 ; in modern construction, 50,496.1.

welding, 50, 496.-1; fluxes, 50, 188/1;precautions, 50, 53.-1, 54.-1.

working, 50, 490.-1.wrought, elastic behaviour, effect of

temp., 48, 255; proposed revisions o f A.S.T.M. tontativo standards, 50, 321/1 ; report of A.S.T.M. ettee., 50,321.4.

Magnesium-aluminium alloys,a solid solution range, boundary. X-ray

detn., 50, 732.4. boiling point curves, 50, 730.4. casting, 50, 294.4. chemical properties, 50, 604.4. electrical conductivity, 50, 10.1. equilibrium diagram, 50, 004.1. fatigue, clToct of lanolino coating, 49,

103.heat-treatment, 50, 604.1.Lorenz number, 50, 10/1. physical properties, 50, 004.-1. properties, 50, 294.4. solid solubility of aluminium at different

temps., 48, 221 [Paper). solid solubility of magnesium, X-ray

detn., 50, 12.-1, 553.4.

Subject Index 847Magnésium-aluminium alloys,

solid solutions, hom ogenized, tensile tests, 50, 732.-1.

thermal conductivity, 50, 10 . 1 .M agnesium -alum inium -copper alloys,

constitution, 50, 803.-1. corrosion by tliroo typos o f corroding

media, 50, 480/1. equilibrium relations, 50, 222/1.

M agnésium -alum inium -silicon alloys, A l3Mg2, X -ray ovidonco, 50, 485/1. constitution, 50, 340/1. electrical conductivity, 50, 10-1. equilibrium diagram, 50, 472.1.Lorenz number, 50, 10.4.Mg.,Si, presenco n ot confirmed by X -rays,

50, 485/1. thermal conductivity, 50, 10.-1. Widmanstiitten structure, 50, 485,4.

M agnesium -alum inium -zinc alloys, solid solutions, elongation, 50, 732.1.

Magnesium -antimony alloys, boiling point curves, 50, 730.4.

M agnesium -beryllium alloys, 50, 295.4. attempts to make, 49, 303 (Taper).

M agnesium -bism uth-lead alloys, boiling p oin t curves, 50, 730/1.

M agnesium -cadm ium alloys, boiling point curves, 50, 730.-1. chemical properties, 50, 004.1. electrical conductivity, 50, 10.1. equilibrium diagram, 50, 604.1. heat-treatment, 50, 004,1.Lorenz number, 50, 10.4. physical properties, 50, 004/1. thermal conductivity, 50, 10.1.

M agnesium -calcium alloys, chem ical properties, 50, 004.-1. equilibrium diagram, 50, 004/1. heat-treatment, 50, 004/1. physical properties, 50, 004/1.

M agnesium -cerium alloys, chem ical properties, 50, 004.1. electrical conductivity, 50, 10A . equilibrium diagram, 50, 004.1. heat-treatment, 50, 004.1.Lorenz number, 50, 10.4. physical properties, 50, 004.4. thermal conductivity, 50, 10.1.

M agnesium -copper alloys, age-hardening, 48, 2u2. chemical properties, 50, 004.-1. electrical conductivity. 50, 10.1, equilibrium diagram, 50, 004.1. heat-treatment, 50, 004.4.Lorenz number, 50, 10.4. magnesium rich, constitution, 50, 429.4. physical properties, 50, 004.4. thermal conductivity, 50, 10 . 1 .

M agnesium -lanthanum alloys, «institution , 50, 153/1.

Magnesium -lead alloys, boiling point curves, 50, 730.4.

M agnesium-manganese alloys, chem ical properties, 50, 004.4. electrical conductivity, 50, 10.4. equilibrium diagram, 50, 004.1. heat-treatment, 50, 004.1. lattice constants, 50, 155.-1.Lorenz number, 50, 10.1.

Magnesium-manganese alloys, physical properties, 50, 004.-1. solubility o i manganese, X -ray detn.,

50, 155.1. thermal conductivity, 50, 10/1.

Magnesium silicide - copper - aluminium alloys, equilibrium relations, 50, 222.4.

M agnesium -silicon alloys, chemical properties, 50, 004.-1. electrical conductivity, 50, 10.4. equilibrium diagram, 50, 004/1. heat-treatment, 50, 004.4.Lorenz number, 50, 10/1. physical properties, 50, 004/1. thermal conductivity, 50, 10/1.

M agnesium -zinc alloys, a solid solution range, boundary, X -ray

detn., 50, 732.-1. boiling point curves, 50, 73G.4. chemical properties, 50, 604 I. electrical conductivity, 50, 10.4. equilibrium diagram, 50, 004.4. heat-treatment, 50, 004A .Lorenz number, 50, 10.4. physical properties, 50, 004.4. solid solutions, hom ogenized, tensile

tests, 50, 732/1. thermal conductivity, 50, 10.4.

Magnetic anisotropy, 50, 70,4.Magnetic effects, now kind o f e.m .f. and

other effects therm odynam ically con nected with, 50, 423/1.

Magnetic hysteresis, block structure and, 50, 9.1,Curve, apparatus for detn.. 50, 242A . wave-m cchanics theory, 50, 340.4.

Magnetic materials, progress, 50, 703/1.Magnetic moments o£—■

Alloys, m ethod o f discussion, 50, 065.-1.Magnetic permeability o f —

Ferromagnetic materials in H .-F . oloctro- m agnotic fields, 50, 2.1, 3/1.

Hipernik, 50, 733.-1.Iron, dependonco on field a t high-

frequency, 50, 344.4 ; in H .-F . oloctro- m agnotic fields, 50, 2/1, 3.1 ; thin wires in H .-F . weak fields, 50, 344.4.

Nickel in H .-F . electrom agnetic fields,50, 2.4, 3.4.

Permalloy, 50, 227,1, 298.4.Magnetic properties,

dependence on elastic strains, 00, 000.4. mathematical explanation, 50, 72.4.

Magnetic properties o f —Chromium dilute solid solus., 50, 005.-1. Cobalt, a t high temps., 50, 595.4 ; films

(electro-deposited), 50, 694/1. Cobalt-iron alloys at high tem ps., 50,

595/1.Films, 50, ¡>99.4.Gold iron alloys, 50, 153.1.Invar at high temps., 50, 595/1.Iron, a t high temps., 50, 593.4 ; films,

50, 599/1.Iron alloys, effect on dispersion liarden-

ing, 50, 731,4.Manganese dilute solid solutions, 50,

005/1.Nickel, a t high temps,, 50, 595,-1; films,

50, 599/1.

848 Subject IndexMagnetic properties of—

Nickel alloys at high tomps., 50, 595.4. Perm alloy, offect o f internal strains,

longitudinal stretching and hydraulic pressure, 50, 475/1.

Perminvar, 50, 18/1.Platinum, 50, 213/1.

Magnetic resistance o f—Ferromagnetic electronic conductors,

increaso, interpretation, 50, 218/1.M agnetic susceptibility,

effect o f cold-w ork, 50, 110/1, 150/1,599.1.

effect o f internal stress, 50, 75/1. measurement, balanco for, 50, 40/1. theory, book, 50, 719/1.

Magnetic susceptibility o f— A ntim ony-thallium alloys, 50, 354.1. Binary alloys, 50, 354/1.Bismuth, offect of cold-work, 50, 76/1 ;

effect o f plastic deformation, 50, 660*4 ; singlo crystals, dependence on field, 50, 657/1.

Cadm ium -antim ony alloys, 50, 354/1. Cobalt in tetravalent form ,5 0 , 146.4. Copper, effect of cold-work, 50, 76.1 ;

effect o f plastic deformation, 50. 660/1. Copper-nickel alloys, 50, 18/1. Copper-zinc alloys, offoct of plastic

deformation, 50, 660-4.Diam agnetic metals, offoct of plastic

doformation, 50, 660.4.Lead, offoct of plastic deformation, 50,

66U/1.Lead-antim ony alloys, 50, 354/1. Manganese, a and p modifications, 50,

658/1.Paramagnetic metals, offoct o f plastic

deformation, 50, 660/1.Platinum, offoct of cold-work, 50, 76.4. Silver, offoct of cold-work, 50, 76/1 ;

effect of plastic doformation, 50, 660/1. Thallium -cadm ium alloys, 50, 354.4. T in-antim ony alloys, 50, 354.1. T in-thallium alloys, 50, 354.4. Z inc-antim ony alloys, 50, 354/1. Z inc-cadm ium alloys, 50, 354.1. Z inc-copper alloys, offect of plastic

deformation, 50, 660/1.Magnetic testing. Seo Testing.Magnetism, structure sensitiveness, 50,

75.4.Magnetization,

after-effect, 50, 74/1. change at Curie point, 50, 344/1. intensity, measurement, 50, 242/1. intrinsic, temp, variation, relation to

other properties of ferro-magnetics, 50, 10/4.

reversed, in strained wires, 50, 217/1. virginal and remanent, relation, 50,

350*4.Magnetization o f—

Cobalt singlo crystals at high temps., 50, 146/1.

Ferrom agnetic materials, and magneto - caloric effect, 50, 9/1.

Nickel, 50, 10/1 ; change at Curie point,50, 344*4; effect on modulus of elasticity, 50, 147.4, 419 /1 ; films

Magnetization of—(oloctrodepo8ited), 50, 595.4.; relation of increaso of rosistanco and, 50, 218/1; temp, changes accompanying, 50, 723A.

Perm alloy, virginal and remanent, relation, 50, 350*4.

Perminvar, virginal and romanent, relation, 50, 350/4.

Single crystals, theory, verification, 50, 345*4.

M agneto-resistance effects, 50, 345*1.M agneto-strain effects, 50, 345/1.Magnetostriction,

theory, 50, 73/1.vibrators, moasurcmonts, 50, 156/1.

Magnetostriction effect, transverse, 50,73.4, 423/1.

M agnetostriction o f—Cold-drawn wire, 50, 344/1.N ickel, remanonco and hystorosis associ

ated with, 50, 658.4.N ickel-iron alloys, 50, 156/1.

Management, industrial, book, 50, 132*4.Manganese,

electrode potential, 50, 79/1. em ergency problem, practical method

of solving, pamphlet, 50, 134*4. estimation, as dioxide, quant., 50,

619 /1 ; bibliography, 50, 168/1; by Knorre’s method in presence of certain other motals, 50, 168*4 ;colorimetric, 50, 89/1 ; colorimotric, by periodate method, now and simplified colorimoter, 50, 620 /1 ; in bronze,50, 8 9 /1 ; in large amts., modification of silver salt-persulphato mothod, 50, 89*4; methods critically discussed,50, 168/1 ; of small amts., oloctro- colorimotric, 50, 554*4 ; pptn. as MnNH4P 0 4,H20 , 50, 89/1, 4 4 3 /1 ; volumetric, after oxidation by periodate, 50, 8 9 /1 ; use of zinc oxido, 50, 8 8 /1 ; with potassiumperiodate, 50, 169*4.

fe rro -. Soo Ferro-manganese. magnetic susceptibilities of a and p

modifications, 50, 658/1. mineral resources of U.S.A., 50, 138.4. production, statistics, 50, 380*4. volume changes during solidification,

50, 226/1, 475/1.Manganese alloys,

solid solutions, dilute, magnetic properties, 50, 605/1.

volum e changes during solidification, 50, 475/1.

M anganese-alum inium alloys, casting, 50, 294^1. constitution. X-ray study, 50, 33*4. creep, 50, 299*4.

Manganese arsenide, change in thermoelectric powor on passing from ferromagnetic to paramagnotic state, 50, 228/1.

M anganese-boron alloys, ferromagnetism,50, 226/1.

Manganese-brasses,analysis, tentative rovisions o f A.S.T.M.

standard methods, 50, 240*4.

Subject Index 849Manganese-brasses,

bearings, friction and abrasion, 50,253.4.

book, 50, 459.-1.castings, properties and structure, 50,

15.4.estimation ol manganese, 50, 89.4. founding, 50, 708.4.manufacture, simplified mothod, 50, 15.4,

774/1.Manganese-“ bronze.” Soo Manganese-

brass.Manganese-carbon alloys, slirinkago on

solidification, 50, 220.4. Manganese-cobalt alloys, equilibrium

diagram, 50, 224.1.Manganese-iron alloys (seo also Ferro

manganese), constitution, 50, 78.4, 79/1, 297.4, 732/1,

733.4.crystal structure, 50, 79.1, 732.1. dilatometric study, 50, 297.4. electrode potentials, 50, 004.4. transformation characteristics, 50, 220/1. x-ray study, 50, 297/1.

Manganese-iron-carbon alloys, equilibrium diagram, 50, 220.4. preparation, 50, 78.4, 296/1, 732.4.

Manganese-magnesium alloys, chemical properties, 50, 004/1. electrical conductivity, 50, 10/1. equilibrium diagram, 50, 004/1. heat-treatment, 50, 004.1. lattice constants, 50, 155/1.Lorenz number, 50, 10.4. physical properties, 50, 004.1. solubility of manganese, X -ray study, 50,

155/1.thermal conductivity, 50, 10A.

Manganese-nickel alloys, equilibrium diagram, 50, 20.4, 430.4. ferromagnetism and phaso configuration,

50, 20/1, 430/1.Manganese-nickel-iron alloys as rheostat

materials, 50, 227.4. Manganese-nitrogen system, ferromagnet

ism, 50, 220.1.Manganese-silver alloys, oloctrode

potential, 50, 79.1. Manganese-silver-copper alloys, constitu

tion, 50, 21.4.Manganese-zinc alloys,

constitution, 50, 431/1 ; X -ray study, 50,352.4.

pamphlet, 50, 459.4.Manganin,

bright-annealing, causes of change of properties during, 50, 473/1.

electrical resistance, change with tomp., A.S.T.M. test for detn., 50, 91/4.

electrical resistance of wires, for H.-F. currents, 50, 14A .

Marine engineering, new alloys for, 50, 109.4. non-ferrous alloys for, 50, 77.4.

Marine engineers, directory, 50, 288.4 [review).

Masurium, pamphlet on properties, prodn., &c., 50, 138/1.

VOL. I..

Materials handling, book, 50, 717/1.Materials o f construction, book, 50, 142.4

(review).Matrix alloy, composition, 50, 182.4.Matthiessen’s constant, 50, 598/4.Maxilvry, 50, 009.4.May Lecture, 48, 315, 317.M.B.V. process. See Modified Bauer-Vogel

process.Mechanical handling, book, 50, 407/1.Mechanical properties. Soo under Specific

properties.Mechanical technology, book, 50, 403.4

(review).Medals, reduction, by succossivo castings,

50, 711/1.Melting,

furnaces. Soo Furnaces. immersion, using gas-firod units, 50,

510.4. in vacuum, 50, 215/1. methods, chem. and metallurgical bases,

50, 500.1. under pressure, 50, 343/4.

Melting of—Aluminium, comparison of graphite and

cast-iron crucibles, 50, 500/1 ; fluxes, 50, 203/1; in elect, furnace, data, 50, 124/1; precautions, 50, 507/1.

Aluminium alloys, 50, 124/1 ; comparison of graphite and cast-iron crucibles, 50, 500/1.

Alum inium -“ bronze,” 50, 125/1.Brass, in cupola, 50, 127/1,709/1; socond-

ary, in roverberatory furnace, 50, 330-4.

Bronze in cupola, 50, 204.4.Constantan, 50, 473/1.Copper, for thick castings, 50, 204.4,

772/1.Copper-nickel alloys, 50, 125/1.Elektron, 50, 507/1.Magnesium, viscosities of fluxes and

slags, 50, 710/1.Magnesium alloys, 50, 507.1, 709.4. Monel metal, 50, 19.1, 391/1. Nickel-brasses, 50, 205/1, 709/1. N ickel-chromium alloys by use of hydro-

gen gas, 50, 508/1.Platinum in vacuum, 50, 197.4.Silver in H.-F. induction furnace, 50,

583/1, 777/1.Zinc, compn. of kettles for, 50, 581/1.

Melting point of—-Beryllium, 49, 372, 50, 145/1.Chromium, 50, 728.4.Elektron, 50, 154/1.Iridium, 50, 289/1.Refractory materials, 50, 756/1. Ultralumin, 50, 727/1.

Melting pressures, 48, 02.Members, election, 48, 18, 315; 49, 15-Membranes. Soo Films.Mercurides, raro earth metal, 50, 540.4.Mercury, .

adsorbed atoms, attempt to activate by ultra-violet light, 50, 418/1.

as dispersing medium, 50, 227.4. consumption, 50, 380/1 ; (by uses), 50,

G40/1.4 H

850 Subject IndexMercury,

detection, 50, 554*4 ; in minute amts.* electroehem., 50, 441/4 ; in very small amts., 50, 443/1.

estimation, gravimetric, us periodate, 50, 90/1 ; in prosonco of copper and arsenic, or iron salts, quant., 50, 90/1 ; in small amts., 50, 443.4 ; rapid, 50, 620/1 ; volumotric, as periodate, 50, 90/1.

films, photooloctrie properties, 50, 212/1. Hall efffect in solid metal, 50, 418.4. metallurgy, 50, 640/1. mineral resources, of U.S.A., 50, 138/1. oxidation by nitric acid, hydrazine as

retarding agent, 50, 149.4. photoelectric properties o f films, 50,212.4. poisoning, 50, 649/1. production, statistics, 50, 380/1. purity, 50, 723/1.single crystals, thermal conductivity, 50,

595/1 ; thormoolcctric power, 50, 595/1 ; W iedemann-Franz-Lorenz valuo, 50, 595/1.

solid, Hall effect, 50, 212/1. surface tension, 50, 594/1. uses, 50, 640/1.vapour, as indust, heat transfer medium,

50, 691/1 ; elect, discharges in, 50, 763/1 ; for heat transfer, 50, 498.4 ; glow discharge, 50, 418.1 ; transformer, 50, 107/1 ; turbines, 50, 184.4,

Mercury alloys. Soo also A m algam s.Mercury-cadmium alloys, superconductiv

ity, 50, 475/1.Mercury-gold alloys, solubility o f gold, 50,

663-4.Mercury-iron alloys, solubility of iron, 50,

298.4.Mercury-iron pentacarbonyl, 50, 350.4.Mercury-nickel alloys, solubility of nickel,

50, 298/4.Mercury-nickel carbonyl, 50, 350/1.Metal spraying. Soo Spraying o f metals.Metal statistics, book, 50, 333.4. Metallic state,

electron theory, pamphlet, 50, 651/1. mathematical theory, 50, H A . misconceptions, 50, 342/1. nature, 50, 210.4. quantum theory, 50, 71.1.

Metallization. Soo Spraying o f metals.Metallography (see also P h otom icrogra p h y),

art of, 50, 237/1.books, 50, 524/1, 588.4, 650/1, 782/1. equipment. Soo Laboratory apparatus. optical hints, 50, 439/1, 486/1. polishing, to retain graphite and inclu

sions, 50, 671/1 ; use of black m agnetic rouge, 50, 552A .

report of A.S.T.M. cttee., 50, 306/1, 485/4.

specimens, automatic polishing, 50, 86/1. technique, 50, 164/1. with polarized light, 50, 40/4. x-ray, 50, 237-4 ; precision method, 50,

486-4.Metallurgical reactions, use o f thermo

dynamical data to study, pamphlet, 50, 133.4.

Metallurgy, books, 50, 59/1, 62.4, 403/1, 589/1 ( r e

v i e w ) , 649/1, 652/i ( r e v i e w ) , 716.4, 719/1 ( r e v i e w ) , 720/1 ( r e v i e w ) , 782/1.

development o f science, 50, 778/1. early, 50, 202/1.fundamentals, book (in R ussian), 50,

334/1. history, 50, 778/1. non-ferrous, book , 50, 404/1. practical, for engineers, book, 50, 206.4. relation o f physics, 50, 202.4. research, rocont tondoncies, 50, 778/1.

Metaphot, 50, 170-4.Metso, 50, 706.4.MG 7 alloy. See A l u m i n i u m a l l o y s .M icrom ax pyrometer, 50, 175/1.M icrophotography. Seo P h o t o m i c r o g r a p h y .M icroscopes. Soo L a b o r a t o r y a p p a r a t u s .M icroscopic exam ination, advances, 50,

237/1.M icroscopy,

by polarized light, 50, 749.4. practical, books, 50, 130/1, 412/1 ( r e

v i e w ) .

Milk,action on metals, 50, 302/1, 357.1 ;

considerations governing, 50, 302/1 ; effects o f operating conditions in various parts o f pasteurizing equ ip m ent, 50, 435/1.

corrosion o f metals by, 50, 83.4 ; possiblo galvanic effects, 50, 545/1, 608-4; subm erged teste, 50, 302/1.

solubility o f copper, 50, 25.4.Milling for limited production , 50, 768/1.Mirrors,

ancient, 50, 497/1. history, 50, 649.4.

Mixed crystals. Seo S o l i d s o l u t i o n s .M odel toy industry, use o f non-ferrous

m etals and alloys, 50, 109/1.Modified Bauer-V ogel process, 50, 438/1,

481/1, 742/1. M olecular sphere o f action o f m etals, 50,

8.4.M olten alloys, electrolysis, 50, 665/1.Molten metals,

electrical conductivity, change in m agnetic field, 50, 432/1.

electrical resistance, detn ., 50, 152/1. H all effect, 50, 9.4.

Molybdenum, absorption o f carbon m onoxide, 50, 470.1. absorption of nitrogen, 50, 470/1. bibliography, 50, 525.4, 703.4. degassing, 50, 470.1. diffraction patterns, 50, 747.1. electrical resistance, change under h y d ro

static pressure, 50, 422.4. electrode potentials in potassium h y d r

oxide solns., 50, 637/1. electrolytic oxidation in potassium h y d r

oxide solns., 50, 637/1. estimation, b y potassium perm anganate,

50, 443 /1 ; colorim etric, 50, 310/1. fe rro -. See F e r r o - m o l y b d e n u m . films, sputtered, arrangem ent o f m icro

crystals, 50, 616/1. lattice parameters, 50, 362.1.

Subject Index SotMolybdenum,

micro-crystals. Arrangement in spattered film, 50, 616.4.

occurrence, 50, 691.1, 763.!. pamphlet, 50, 3S9.1. production, 50, 763.-1. properties, 50, 76X1. thermoelectric power, 50, 724-1. thoriated, coarse o f activation, 50, 23.-1. uses, 50, 52.4, 380-1, 69L4, 763.4.

M olybdenum -iron alloys. See F trra - mobjbdentsm.

M olybdenum -iron-carbon alloys, equilibrium diagram. 50, 297/1.

Monazite, pamphlet, 50, 137.4.Monel metal (see also -Viekel alloy*),

annealing, 50, 19.1, 430.1, 570.1. brazing, 50, 19.1, 430.4. casting, 50, 19.4, 266.1. centrifugally cast, 50, 19.1. chemical properties, 50, 253.1. condensers, surface-, construction, 50,

690.1.corrosion, 50, 19A ; b y alkaline soins.,

50, 436.4 ; by bleaching liquors in textile industry, 50, 435.4 ; by cider and apple juice, 50, 303.4 ; by milk, 50, 302.1.

corrosion-resistance, 50, 255.1. deoxidation, 50, 19.1. driving shaft o f m otor boat, 50, 498.1. endurance properties at low temps., 50,

79-1. fatigue, 50, 7.33.4.grinding of balls, centreless, 50, 707.1. hardness, at low temps., 50, 79.1 ; effect

of cold-rolling, 50, 6.-1. impact strength at low temps., 50, 70A. impact value, Izod notchod-bar, effect

of cold-work, 50, 430.4, 680.1. m achining, 50, 118.4, 430A . mechanical properties, 50, 430/1. melting, 50, 19.4, 391.4. nitriding containers, 50, 108.4. physical properties, 50, 19.4, 255A . pickling, 50, 19/1, 768.1. piston, spinning, 50, 328-4. pouring temperature, 50, 19.4. pressing, 50, 430A ,radiators, for building heating, 50, 52.4. rigidity, temp, coefl., 50, 82.1, 158/1. riveting, countersunk, 50, 382/1. soldering, 50, 19.1, 430.-1. spinning, 50, 430.4. strengthening on cold-rolling, 50, 6/1. stress-corrosion, 50, 232.4. stres3-endurance curves, 49, 27. tensile properties, at low temps., 50, 79/1 ;

effect of cold-rolling, 50, 6/1 ; im provement, 50, 351/1.

uses, 50, 255.-1, 430/1, 691.1 ; in glass machinery, 50, 693/1 ; in marine construction, 50, 181/1 ; in textile industry, 50, 569.-1.

welding, 50, 19/1, 113.1, 257A , 384.1, 765/1 ; autogenous, 50, 188/1 ; auto* genous, in construction of chem. apparatus, 50, 257/1 ; elect., 50, 188/1 ; in apparatus construction, 50, 54/1 ; oxy-acetylene, 50, 113/1, 430.1 ; oxy-

Monel metal,acetyleno, practical hints, 50, 1 ST-4: practical notes, 50, 698-1.

wire-cloth, 50, 455.4.Mortar, offect on metals, 50, 161-1.Moulding,

dowelling methods, 50, 268.1. m achine-, advantages, 50, 509-1.

Moulding machines, electro-m agnetic, 50, 309.1.- magnetically operated, 50, 269.1. types, 50, 309.4, 713.4.

Moulding of—Aluminium shoe lasts, 50, 330/1. Propellers, 50, 391.4, 308-4.

Moulding ssnrig, book, 50, 784.4. classification, 50, 641.1. clays for, endoranv-e of bond screnu&ii,

50, 775.4. control, 50, 510.4. dry versus green, 50, 391.1. for bronze casting, 50, 268-1. grading, comparison o f meth»*!«, 50,

509-1; grain distribution index for, 50, 128.1.

grains, character, 50, 128-1. humidity, detn., 50, 269.4. literature, review, 50, 713-1. oil-sand, 50, 392.4. permeability, 50, 641.4. practical notes, 50, 775.4. preparation, plane, 50, 509.1. report of A.F.A. cttee.. 50, 309.1. rubbing machine, 50, 129.1.Russian, for bronie casting. 50, 268.1. slinging, 50, 392.4. slinging machine, 50, 310.4. strength, relation of grain shape, 50,

268.4, 309.4. structure, 50, 509-1. synthetic, prepn. and use, 50, 268-1- testing, 50, 269-1, 391-4, 509.4, 310.1,

641-4, 713.4, 775.1, 776 1 ; co ordination of methods, 50, 269.1.

used, removal of dost, 50, 64LI.Moulds,

cast-iron, “ blowing,** occurrence and cause, 49, 205, 232.

copper, need for use of H.-O. metal. 49, 228, 229; temp, gradients in walls,49, 216.

dry-sand, venting, 50, 713-1. facing m aterials,'50, 128-1. facing sands, sea coal, etfect ot heat on

permeability, 50, 128.4, lor strip ingot casting, materials for.

49, 203 (Paper). hardness, control, 50, <13.4.mild steel, temp, gradients in wall

during and after pouring, 49, 214. water-cooled, construction and use, 50,

770.-1.Mumetal, . , . ,

cold-rolling, rote of prodn. ot lattice distortion and preferred orientation.50, 672.1.

core loss current, measurement by moans of a.c. potentiometer, 50, 605/1.

852 Subject IndexMumetal,

magnetizing current, moasuroment by moans of a.c. potentiometer, 50, 605 4 .

use in meter and instrument design,50 ,311 .1 .

Muntz metal (soo also Brasses, and under names of constituent metals),

condenser tubes and ferrule stock, seamless, • tentative revisions of A.S.T.M. standard specifications, 50, 321 4 .

electric furnace (A jax-W yatt) for molting, material and heat balance, 50, 511/1.

MVC alloy, properties, 50, 12.4, 223/1, 536/1.

Naval brass. Soo Brass. NCT 3 alloy,

com position, 50, 605-1. physical properties, 50, 605/1.

Neodymium mercuride, 50, 540/1.Newfoundland, manufacturing industries,

50, 61/1.Nichrome,

nitriding containers, 50, 108/1. use in glass machinery, 50, 693/1.

Nickel, absorption o f oxygen during melting,

effect of turbulonce, 50, 511.4. action o f coffee, 50, 740.1. action o f tea, 50, 740.1.Admiralty. Soo C o p p c r -n ic k e l- t in a lloys . Barkhausen effect, 50, 9/1. book, 50, 63/1. casting, 50, 266.1, 581/1. coinage, recent issues, 50, 692/1. cold-rolling, preferred orientation pro

duced by, 50, 164/1 ; rato of prodn. of lattice distortion and preferred oriontation, 50, 672.4.

contact potential difference between iron and, 50, 67.4.

corrosion, atmospheric ( “ fogging ” ), 48, 121 (P a p er ) ; by alkalino solns., 50, 436.4 ; by bloaching liquors in textile industry, 50, 435/1 ; by milk, 50, 302.4 ; by milk, effects of operating conditions in various parts of pasteurizing equipmont, 50, 435.1 ; by soa- water, 48, 109.

corrosion-resistance to gases, 50, 436.4. creep, 50, 558.1.Curie point, influonee o f moch. deforma

tion, 50, 340-4. degassing, 50, 470.4. density, effect of torsion, 50, 659.1. deposition, 50, 450-4 ; advantages of low

P j l ? 50, 371 .1 ; American and Continental practice, 50, 315-4, 682.4 ; at high c.d., 50, 177.4 ; calcium fluorido method for detn. o f fluoride in baths, 50, 451.4 ; cathodic, from nickel sulphate solns., influence o f various factors, 50, 632.4 ; chem. control of baths, 50, 315.4, 371-4 ; control of acidity in low p& baths, 50, 9 7 .4 ; control o f solns., 50, 564-4 ; derma -

Nickel,titis, 50, 493/1; dotn. of nickel ui bath by Moore’s method, 50, 98/1 ; detn. o f thickness o f deposits by nomograms, 50, 682.4 ; dovolopments, 50, 450.4 ; effect o f acidity o f electrolyte on structure and hardness of doposits, 50, 178.4 ; offoct of and of various bufforing agonts, 50, 1784 ; offoct of small amts. of chromic acid and of chromic sulphate, 50, 178.4 ; efficiency of nickel anodes, 50, 759/1 ; Foscol process, 50, 682/1 ; for resistance to corrosion, 50, 97.4 ; high c.d., probloms, 50, 314/1, 682/1 ; highspeed, in England, 50, 97/1, 177/1 ; historical roviow, 50, 315/1 ; hot solns. and low Pu, 50, 564.4; hot solns., progress, 50, 97.4 ; low p a solns., 50,97.1, 178/1 ; measurement o f H-ion concn. of bath, 50, 248/1; nickol anodes for, 50, 464 ; on aluminium and its alloys, 50, 474 , 2484, 2624, 4504, 6334, 7594 ; on aluminium die-castings, 50, 5654 ; on rolled zinc and zinc die-castings, 50, 99/1 ; on worn Diesel ongino parts, 50, 6354 ; on zinc-baso die-castings, 50, 2484 ; Panzer process, 50, 974, 3714 ; passive and donso doposits by Panzer process, 50, 974 ; pitting, 50, 564/1 ; prepn., advantages and disadvantages of nickel anodes, 50, 7594 ; properties of low Pu baths, 50, 759/1; rapid, baths, 50, 974 ; rapid, comparison of practico in U.S.A. and Europe, 50,564.4 ; “ stopping off ” materials, 50, 3 1 54 ; stripping baths, 50, 6824 ; throwing power of solns., 50, 6824 ; ultra-rapid, 50, 493/1 ; use o f colorimeter for dotn. of nickol content and P u of solns., 50, 484 ; using local a.c. or d.c. supply, 50, 759.4.

deposits, stripping baths, 50, 6 8 24 ;wear, 50, 6354.

detection, spectroscopic, 50, 6204. diffraction patterns, 50, 7474. effect o f sulphur in hot-working, 49, 408. effect on bearing bronzes, 50, 154. effect shown in alternating oloctro-mag-

notic fields, 50, 2184. elasticity, modulus, offoct o f magnetiza

tion, 50, 1474, 4194. electrical resistance, chango at Curie

point, 50, 344.1 ; chango in magnetic iiold, 50, 340.1; chango under hydro - statio pressure, 50, 4224 ; effect of torsion, 50, 6594 ; temp, coeff., 49, 288.

electrolytic, chom. and phys. properties, 50, 67/1; improvement of quality by remolting, 50, 2664.

electrolytic production by moans of insol.anodes, 50, 251.4.

endurance, 50, 5584. estimation, as sulphide, 50, 394 ; colori

metric, potassium dithio-oxalato method, 50, 5 5 4 4 ; gravimetric, 50, 5544 ; in ammoniacal soln., microelectrolytic, 50, 4 4 3 4 ; in Ni-Cr,

Subject Index 853Nickel,

N i-C r-F o and N i-C r cast-iron , 50, 554/1; in plating solns. b y M oore’s m ethod, 50, 98/1; in stool, 50, 39/1; o f chrom ium and, in same soln., vol., 50, 168/1; quant, b y filtration m othod, 50, 620/1.

estimation o f zinc (small am ts.), 5 0 ,677/1. extraction by carbonyl process, influence

o f sulphur com pds., 50, 277/4. ferrom agnetism, associated with con

ducting electrons, 50, 346/1. fibre structures, prodn., 50, 76/1. films, elect, properties, 50, 343.1 ;

(electrodoposited), m agnetization, 50, 595*4; olectrodeposition, 50, 565/1; m agnetic properties, 50, 599.4.

fluidity, pressure o f, 48, 53. fogging, 48, 121 (P a p er); catalysis in,

48, 130,136; influence o f light, 48, 124 ; influence o f sulphur dioxide, 48, 130.

forged surfaces, pneum atic fettling ham m er and frazing m achine, 49, 395.

forging press, 49, 400. gases in, evolution on heating, 50, 340/1. history, 50, 521/1, 569/1. hot-w orking, m odern works plant and

equipm ent, 49, 391 (Paper). ingots, planing, 49, 395, 410; squaro,

m achining, 49, 395. itch, 50, 493/1.Joule magnetic effect, is positive elonga

tion shown ?, 50, 595^1. lattice parameters, 50, 362.4. m agnetic permeability in H .-F . oloctro-

magnetic fields, 50, 2/1, 3/1. m agnetic properties, at high temps., 50,

595/1 ; o f films, 50, 599/1. m agnetic transformation point, 50, 533/1. magnetization, 50, 10/1; change at Curio

point, 50, 344.4 ; offoct on modulus of elasticity, 50, 147/1, 419/1; relation of increase of resistance and, 50, 218.4 ; relation to temp., effect of moch. deformation, 50, 340/1 ; temp, changes accompanying, 50, 723/1.

m agnetostriction, remanenco and hysteresis associated with, 50, 658/1.

malleable, prodn., 50, 390/1. matte, constitution and method of treat

ment, 50, 298.4. m etallurgy, 50, 521A , passivity, 50, 637/1.photoelectric efficiency in extreme ultra

violet, 50, 221.1. pickling, 50, 706/1.-plated steel tank car linings, 50, 85.4. polished, “ fogging,” 48, 121; protection

by lanoline, 48, 123. production, review, 50, 569.1. properties, ofTect o f elevated temps., 50,

541 A .protection against scaling at high temps.,

Alitieren process, 50, 234/1. recrystallization temperature, 49, 291. refining, 50, 761.4 ; olectro-, 50, 251/1, *

317.4. resources, 50, 569/1.rigidity, modulus, change duo to cold-

working, 50, 216.4,

Nickel,riveting, countersunk, 50, 382/1. rolled surfaces, pneumatic fettling ham

mer and frazing machine, 49, 395. rolling mills, hot-, 49, 401. secondary electronic emission, discon

tinuity at Curio point, 50, 346.4. separation, 50, 620/1. sheet, cutting, use of compressed nitro

gen, 50, 575/1 ; preferred orientation produced by cold-rolling, 50, 164/1.

single crystals, propn. by Bridgman method, furnace and crucible devico for, 50, 312.4.

solubility o f oxygen, 50, 511^4. specific heat, dependence on temp., 50,

726/1 ; effoct of cold-work, 50, 8.4. speiss, constitution and mothod of treat

ment, 50, 298.4. stress-endurance curves, 49, 27. sub-boundary structures, 50, 614/1. surfaces, recombination of hydrogen

atoms on, 50, 658/1. tensile properties, 49, 289; effect of

added elements, 49, 291 ; effect of diam. of wiro, 49, 291.

thermal diffusivity, 50, 292/1, 595/4. thermoelectric power, variation with

temp., 50, 664/1. thermomagnetic effects, 50, 340/4. torsion, effect on density, dimensions

and elect, resistance, 50, 659/4. torsion modulus at high temps, and

under simultaneous magnetization, 50, 419/1.

tubes, fatiguo-rcsistance, 50, 380A . uses, 50, 380.1, 381/1, 569/1, 691.4 ;

for internal decoration, 50, 184.4 ; in dairies, 50, 692/1 ; in engineering, 498/1 ; in marine engineering, 50, 380/1 ; in wireless valves, 50, 381/1.

valence, book, 50, 652/1. veining or sub-boundary structures, 50,

614/1.welding, 50, 257/1, 384/1 ; practical

hints, 50, 188/1. wire, creep tests, 49, 295 ; elastic

extension under longitudinal stress, 50, 70.1 ; mech. properties, 49, 28, (Paper) ; stretched, crystal lattice distortion, 50, 617/1.

Nickel alloys (soo also Corronil, In co , Konel, M onel metal, N ickel-brass, Permalloy, Perminvar, Silveroid, &c.),

age-hardening, 50, 351.4. brazing, 50, 188/1.corrosion by alkalino solns., 50, 436/1. corrosion-resistance to gases, 50, 436/1, creep, 50, 558.4.effect o f sulphur on hot-working, 49,

408.forged surfaces, pneumatic fettling

hammer and frazing machine, 49, 395.

forging press, 49, 400. hot-working, modern works plant and

equipment, 49, 391 (Paper). ingots, machining, 49, 395. magnetic properties at high temps., 50,

595/4.

854 Subject IndexNickel alloys,

pickling, 50, 706/1.properties, offect o f olovated temps., 50,

54 U .protection against scaling at high temps.,

Alitioron process, 50, -3 4 .!. rolled surfaces, pneumatic fottling

hammer and frazing machine, 49, 395.

rolling mills, hot-, 49, 401. soldering, 50, 188/1.uses, 50, 381/1 ; for intense docoration,

50, 184/1 ; in automobiles, 50, 107/1 ; in marino engineering, 50, 380/1 ; in wireless vulves, 50, 381.4.

welding, oxy-acotylone, 50, 188.4, 698.1.N ickel-alum inium alloys,

casting, 50, 294/1, hardeners, propn., 50, 389.4. properties, 50, 294/1.

Nickel amalgams, 50, 350/1.Nickel-brasses (see also Alpaka, Platinoid,

&c.J,casting, 50, 125/1, 265/1, 709/1. casting properties, 50, 772/1. castings, thin-walled, 50, 330/1. corrosion by milk, 50, 302/1 ; by milk,

effects o f operating conditions in various parts of pasteurizing equip, mont, 50, 435.4.

corrosion-resistance, 50, 83.1. effect o f additions, 50, 15/1. founding, 50, 709.1. keys, manuf., 50, 690.4. m anufacture, methods, 50, 15.1 ; simpli

fied mothod, 50, 15/1, 774/1. m echanical properties, 50, 15.4, 225.1. melting, 50, 125/1, 265/1, 709.4. physical properties, 50, 15/1, 538/1. rigidity, temp, coeft., 50, 82.4, 158/1. rod, production, 50, 327/1. scrap, melting, 50, 195/1. welding, 50, 501/1, 765.4. wire, production, 50, 327/1.

N ickel-bronzes, casting, 50, 709/1. casting properties, 50, 772/1. m echanical properties, 50, 350/1. properties, 50, 602.4 ; a t high tem ps.,

50, 602/1. uses, 50, 350/1, 602.4.

N ickel-carbon alloys, slirinkago on solidification, 50, 226/1.

Nickel carbonyl, effoct of addn. to mercury, 50, 350/1.

N ickel-chrom ium alloys (see also Piero- metal),

bibliography, 50, 475A . constitution, 50, 18/1. corrosion by milk, 50, 302.4. corrosion-resistance to gases, 50, 436.4 ;

to gases, effect o f addn. o f aluminium, 50, 436.4.

electrical resistors for high temp, service, 50, 606/1.

ferrom agnetism , 50, 733.1. fogging, freedom from, 48, 123, 138. for electrical heating elements, drawn

or rolled, A.S.T.M. tentative specifications, 50, 107/1, 322-4.

N ickel-chrom ium alloys, m anufacture, 50, 155.4. melting by uso o f hydrogen gns, 5 0 ,508.4. properties, 50, 298/1, 475/1. thermal expansion, 50, 155/1. therm ocouple wires, cure needod in

working and annealing, 50, 94.4. uses, 50, 298/1. valve seatings, 50, 692.4. welding, 50, 54/1, 384.4.

N ickel-chrom ium -iron alloys, bibliography, 50, 475/1. constitution, 50, 18/1. corrosion, by milk, offocts of operating

conditions in various parts of pasteur, izing oquipmont, 50, 435/1 ; by soa- water, 48, 109.

dilatom etric study, 50, 13.4, 349.1. electrical resistors for high temp, service,

50, 600.1.for electrical heating elements, drawn

or rollod, A.S.T.M. tentative specifications, 50, 107/1, 422/1.

m anufacture, 50, 155/1. properties, 50, 298/1, 475/1 ; effect of

temp., 50, 540/1, 541.1. report of A.S.T.M. cttoo., 50, 295.4,

475.4.thermal expansion, 50, 155.4. uses, 50, 298/1.

N ick el-chrom ium -iron -carbon alloys, constitution, 50, 77/1, 295.1.

Nickel-Clad steel plates, 50, 551/1.N ickel-cobalt alloys,

deposition, 50, 176.4. equilibrium, diagram, 50, 224.4.

N ick el-cobalt-iron alloys (see also Perm - invar),

m echanical properties at high temps., 50, 18/1, 79/1.

N ickel-copper alloys, casting, 50, 125.4. cathodic sputtering, 50, 354/1. com plex, properties, 50, 541/1. condensers, surface-construction, 50,

690.4.containing tin and silicon, used for steam

valves, properties, 50, 541/1. corrosion , by phosphoric acid, 50, 436.1 ;

by sea-watcr, 48, 109. corrosion-fatigue, influenco of cliom.

compn. and hoat-troatmont on resistance to, 49, 38.

corrosion-resistance to gases, 50, 436.1. creep, effect o f recrystn. temp, and grain-

sizo, 50, 432.4, 665/1. diffusion coefficient, influenco o f temp.,

50, 291.4. effect o f silicon, 50, G01.1. fatigue, 49, 107. fogging, 48, 122. m agnetic susceptibility, 50, 18.1. m anufacture, 50, 537,4. m echanical properties, reviow, 50, 537/1. m elting, 50, 125.4.physical properties, review, 50, 537/1. physico-chem ical properties, review, 50,

537.1.properties, 50, 77-4, 183.4 ; at low

temps., 50, 19.4.

Subject Index 855Nickel-copper alloys,

thermal conductivity, 48, ¡¡7. thermocouple wires, earo nooded in

working and annoaling, 50, 94.-1. thermoelectric power, variation with

temp., 50, 004.4. uses, 50, 77A , 537.-1.

N ickel-copper-iron alloys, deposition, 50, 90.4, 682.4 ; from

cyanido soins., 50, 248/1.N ickel-copper-silicon alloys, coppor-ricli,

constitution, 50, 349/1,N ickel-copper-zinc alloys. Sco N ick el-

brasses. Nickel-gold alloys,

electrical conductivity, 50, 16.1. phase equilibrium conditions, equations,

50, 353/1.Nickel-iron alloys (soo also Permalloy, &c.),

~ Y transformation, 50, 19A. core loss current, measurement by moans

of a.c. potentiometor, 50, 605.4. corrosion by sea-wator, 48, 109. elastic limit, magneto-elastic phonomena

in relation to, 50, 350/1. fibre structures, prodn., 50, 76.1. hydrogen-overvoltage, 50, 252/1. improvement by hoat-treatmont, 50,

605/1.magnetizing current, measurement by

means of a.c. potentiometer, 50, 005.4. magneto-elastic phenomena in rolation

to elastic limit, 50, 350/1. m agnetostriction, 50, 150/1. oxygen-overvoltage, 50, 252/1. phase equilibrium conditions, equations,

50, 353/1.strain and m agnetic orientation, 50,

004/4.use in meter and instrument design, 50,

311/1.Nickel-iron-arsenic alloys, constitution, 50,

298/1.Nickel-iron-manganese alloys as rheostat

materials, 50, 227/1.Nickel-iron-sulphur alloys, constitution,

50, 298.-1.Nickel-iron-tungsten alloys, hot structural

hardening, 50, 430/1.N ickel-lead-cadm ium alloys,

age-hardenable, 50, 290/1. solid solubility o f N iCd„ 50, 296/1.

Nickel-magnesium-carbon alloys, age-hardening, 50, 351.4. corrosion-resistance, 50, 351/1.

Nickel-manganese alloys, equilibrium diagram, 50, 20/1, 430.4. ferromagnetism and phaso configuration,

50, 20/1, 430/1.Nickel mercury alloys, solubility of nickcl,

50, 298.-1.Nickel oxygen system, phaso diagr., tenta

tive, 50, 511.4.Nickel-palladium alloys, phaso equilibrium

conditions, equations, 50, 353/1.Nickel-silicon alloys, precipitation harden,

ing, 50, 605/1.“ Nickel-silver.” See Nickel-brasses.Nickel-silver-copper alloys, properties, 50,

470.-1,

Nickel steels. Soo Steels. N ickel-tin-alum inium alloys, aluminium-

rich, constitution, 50, 347/1. N ickel-zinc-copper alloys. See N ickel-

brasses.Nierai,

compositions, 50, 471.4. properties, 50, 471.4.

Niobium. Soe Columbium.Nitralloy, use in glass machinery, 50, 693.4. Nitri-Brite dip, 50, 247/1.Nitric acid, action on metals in presenco

of hydrazine, 50, 149.4.Nitrides, superconductivity, 50, 352/1. Nitriding containers, uso of non-ferrous

metals for, 50, 108-4.Nitrogen, absorption by motals, 50, 470.4. Noble metals,

deposition, limiting c.d., 50, 99/1. Nomenclature,

importance, 50, 398/1. report of A.S.T.M. cttee., 50, 398/1. simplicity and uniformity, 50, 398.1.

Nomogram, book, 50, 781.4.Non-ferrous alloys, properties at elevated

temps., 50, 159/1, 737/1.Non-ferrous industry,

manufactured articles, unfavourable position, 50, 270/1.

use o f cast iron, 50, 275.4.Non-ferrous metallurgy, recent advances,

50, 202/1.Non-ferrous metals and alloys,

books, 50, 137/1, 462.4 (review), 527/1. work published in 1931, 50, 518.4. report of A.S.T.M. cttee., 50, 495/1.

Nust, 50, 484/1.

Obituary, 48, 343; 49, 411. Occluded gases. Soo Gases.Officers. See Council.Oil cracking equipment, corrosion, 50,2 JÜ.4. Oil-fired furnaces. See Furnaces.Oil fuel, burning, handbook, 50, 280/1.Oil industry, requirements for metals at

high tomps., 50, 531/1.Oil pipe lines, corrosion, location and study ,

by surface elect, measurements, 50,230.4.

Oils, lubricating, adherenco to metallic surfacos, 50, 277/1.

Optical constants o f—Copper, variations, 50, 417.4.

Osmiridium, pamphlet, 50, 138-4.Osmium (seo also Platinum metals),

specific heat, dependence on temp., 50,726.4.

Osram hard metal, properties and uses, 50, 119.4.

Overstrain, resistance to deformation during, measurement, 50, 244/1.

Overvoltage, 50, 084.4.Overvoltage of—

Alloys, hydrogen-, 50, 490.4.Cadmium, hydrogen-, 50, 452/1. N ickel-iron alloys, 50, 252/1.

Oxidation, , .anodic. See Anodic oxidation. frictional, 50, 529/1,

856 Subject IndexOxide films, intorforenco colours, intensifi

cation, 50, 357/1.Oxygen-overvoltage. Soo Overvoltage.

Painting of—Copper, 50, 439/1.Galvanized iron, 50, 743.1.Zinc, 50, 743/1.

Paints,aircraft, pamphlet, 50, 03/1. aluminium. Seo Alum inium . as protective coatings for mngnosium

alloys, 48, 158. developments, 50, 439.4. for metal aircraft structures, investiga

tion, 50, 484/1. heat-resisting, 50, 643/1.Nust, 50, 484.-1.pipe coatings, method for recording

effectiveness, 50, 86/1. progress in 1931, 50, 301/1. protection of aircraft materials, 50, 236.1,

481.4.protective, tests, 50, 612/1. radiation capacities, 50, 319/1, 496/1. relation between corrosion and, 50, 236/1.

Palladium (seo also Platinum metals), adsorption of carbon monoxide, 50, 3.1. atomic heat, 50, 69A . deposition, 50, 98-4.electrical resistance, change under hydro

static pressure, 50, 422.4. hardness, 50, 3A. lattice parameters, 50, 362/1. leaf, 50, 381.1.photoelectric properties, 50, 212.-1. specific heat, 50, 69/1 ; dependence on

temp., 50, 726.il. thermal expansion, 50, 69.-1. thermionic properties, 50, 212/1.

Palladium alloys, dental, tensile properties, 50, 476.4.

Palladium arsenide, prepn., 50, 20/1.Palladium black, heat of absorption of

hydrogen at 0° C., 50, 68/1.Palladium-copper alloys,

equilibrium diagram, 50, 476/1. phase equilibrium conditions, equations,

50, 353.4.Palladium-gold alloys,

atomic susceptibility curves, doviation from theoretical curves, 50, 37.-1.

equilibrium diagram, 50, 476.4. hydrogenized, photoelectric and thermo

electric effects, 50, 542,1. lattice constants, 50, 86/1, 553/1 ; of

solid soins., 50, 486.-1. phase equilibrium conditions, equations,

50, 353.4.Palladium-hydrogen system, prcssurc-com-

position isotherm at 0° C., 50, 20/1.Palladium-nickel alloys, phase equilibrium

conditions, equations, 50, 353/1.Palladium-platinum alloys,

atomic susceptibility curves, doviation from theoretical curves, 50, 37/1.

constitution, 50, 80.-1. hardness, effect of hcat-treatmcnt, 50,

80,1.solubility of hydrogen, 50, 80/1.

Palladium-rhodium alloys, hardness, 50, 80/1. solubility of hydrogen, 50, 80/1.

Palladium-silver alloys, equilibrium diagram, 50, 476,1. hydrogenized, photoelectric and thermo-

oloctric cffocts, 50, 542,1. lattice constants, 50, 86/1, 553,1 ; of

solid soins., 50, 486/1.Palladium-silver-copper alloys, oquilib.

diagr., 50, 476,1.Paper mill equipment, advantages of

chromium plating, 50, 183.4.Papers, scientific and technical, prepara

tion, book, 50, 208/1.Parabernol, 50, 670/1.Paramagnetic metals, magnetic suscepti

bility, effect of plastic deformation, 50, 660-4.

Paramagnetism in solid solutions, 50, 665/1.

Parkerizing, 50, 84/1, 85.4.Passivity,

cathodic, 50, 668,1. factors influencing, 50, 83/1.Faraday’s views in light o f recent re

search, 50, 83.4. theory, 50, 037,1.

Passivity of—Chromium, 50, 495/1, 782.4.Nickel, 50, 637/1.

Patent law, for chemists, book, 50, 283/1 ; principles, for chemical and metallurgical industries, book, 50,133/1.

Patina, grcon, artificial prodn, on coppor,49, 153.

Pattern-making, 50, 775/1. Patterns,

metal, electrolytic procoss for manuf.,50, 712/1.

wood, American specifications, 50, 127 A .

Peltier effect demonstration, simplo apparatus, 50, 41/1.

Perfusion, 50, 744/1. mechanism, 50, 307/1. theory, 50, 478/1.

Periodicals, directory, 50, 784/1. subject index, 50, 458/1.

Permalloy, air-cooled, high pormeability, 50, 733,1. for d.c. and a.c. circuits, 50, 298/1. magnetic permeability, 50, 298.-1 ; high,

cause, 50, 227/1. magnetic properties, effect of internal

strains, longitudinal stretching, and hydraulic pressure, 50, 475/1.

magnetization, virginal and remanent, relation, 50, 350,1.

rotation by magnetization, 50, 19.4. use in meter and instrument dosign,

50, 311/1.Permanent mould casting, 50, 711,1.

machines and processes, 50, 331/1. Permanent mould casting of—

Aluminium alloys, 50, 771.4.Bronze, 50, 123,1, 712/1.

Permanent moulds, advantages, 50, 267.4. material for, 50, 712.A.

Subject Index 857Permihvar,

magnetic properties, 50, 18/1. magnetization, virginal and romanont,

relation, 50, 350/1.Permite Resalum, 50, 089/1.Petrol,

corrosion by, 50, 303/1. corrosion of copper, 50, 544/1.

Pewter, manufacture, 50, 22/1, 432/1.Phase rule,

book, 50, 281/1.De Donder’s formulation, remarks on,

50, 178/1.Phosphor-bronze,

bearings, friction and abrasion, 50, 253/1. Castings for goar blanks, British standard

specifications, 50, 51/1. centrifugally-cast, properties, 50, 126/1. corrosion by bleaching liquors in toxtilo

industry, 50, 435/1. creep, 50, 477/1. effect of lead, 50, 101/1. properties, 50, 101/1, G03/1 ; at high

temps., 50, 477/1 ; effect of increasing tin content, 50, 003/1.

rigidity, temp, cooff., 50, 82/1, 158/1. sheet, manuf., 50, 120/1. strip, manuf., 50, 120/1. tensile properties at high temps., 50,

477/1.nse in elect, industry, 50, 703/1. wire-cloth, 50, 455/1. worm-wheels, 50, 100/1, 090/1.

Phosphoric acid, corrosion by. Sco Corrosion.

Phosphorus, affinity for gold and silver, 50, 10.4. estimation in bronzes, rapid, 50, 554.1.

Phosphorus-copper alloys, with high phosphorus, properties, 50, 002/1.

Phosphorus-silver-copper alloys, constitution, 50, 734/1.

Photo-elasticity, 50, 753.1.book, 50, 400/1 {review).

Photoelectric effect, new, 50, 508/1. selective, 50, 220/1. temperature dependence, 50, 219/1. theory, 50, 219/1, 220/1. vectorial, 50, 214/1.

Photoelectric effect in—Alkali metal thin films on silver, 50,214.-1. Films, thin, voctorial, 50, 214/1.

Photoelectric efficiencies in oxtrcmo ultraviolet, 50 221/1.

Photoelectric emission,Fowler’s theory, experimental test, 50,

219/1.from oxide cathodes, effect of olect.

fields, 50, 220/1.Photoelectric properties of—

Aluminium films, 50, 454/1.Beryllium films, 50, 454/1.Cobalt, 50, 2 1 0 / 1 .Contacts betwoon metal and semi-

conductor, 50, 293/1.Gold, 50, 213/1, 219A ; thin unbacked

films, 50, 147.-1.Magnesium films, 50, 454A .Mercury films, 50, 212/4.

Photoelectric properties of—Palladium, 50, 212.1.Potassium, 50, 213.-1.Silver, 50, 213.4, 219/1.Tantalum, 50, 213/1, 219 /.Thallium films, 50, 454/1.Tungsten, 50, 214/1.

Photoelectric sensitivity curves of clean metals at various temps., analysis, 50, 219/1.

Photoelectric theory, Fowlor’s, additional experimental verification, 50, 422/1.

Photomicrographs, magnification, method of illustration, 50, 362/1.

Photomicrography (sco also Metallography), books, 50, 00/1, 01/1. equipment. See Laboratory apparatus. low-power, 50, 744/1. optical hints, 50, 486/1.

Physical properties. Soo ' under spocific properties.

Physics,application to metallurgy, 50, 202/1. applied, somo aspects of research, 50,

280/1.constants, tables, 50, 404/1. handbook, 50, 656/1 [review), 717/1. recent advances, book, 50, 406/1. theory, book, 50, 135.1.

Pickling, chemical reactions, 50, 706/1. electrolytic, 50, 328.4. for galvanizing, improved method, 50,

612*4.machines, continuous rotary, 50, 706.4. modern methods, 50, 120/1. plant, housing, &c., 50, 483/1. prior to deposition, 50, 99/1. solutions, temp., 50, 706.4. tanks, hard and soft rubber for, 50,

121.4 ; size and capacities, 50, 483.4. Pickling of— __ ,

Monel metal, 50, 19/1, <68.4.Nickel, 50, 70G/1.Nickel alloys, 50, 706.4. Silver-copper-nickel-zinc alloys, oO,

000.4.Pipes,

coatings, tests, 50, 86.4. paint coatings, methods for recording

effectiveness, 50, 80/1. steam, high-temperature, metallurgical

requirements, 50, 631/4. water, German practico, 50, 106.1; pro

tective coatings, 50, 301/1.Pistons, diatlierm, 50, 104/1. .Plastic deformation (see also Deformation),

by tools, resistance to, 50, 58/1. during rolling. See Rolling. effect on magnetic susceptibility o fd ia -

and para-magnetic metals, 50, ooO.l. mathematical considerations, 50, 150/1. mechanics, 50, 56A, o7A , 58*4, 189*1. mechanism, 48, 324. processes, problems, 50, rates of change of shape during, and

their relative magnitudes, 50, 50J/I. resistance to, during overstrain, measure

ment, 50, 244.4. stress distribution, 50, 02oA.

858 Subject IndexPlastic deformation,

surface changes, 50, 625/1, thermal effects, 50, 468.4, 658.1.

Plastic deformation of—Magnesium single crystals, 50, 2.4, 530.1. Metals, 48, 317 (M a y Lecture); 50, 215.4.

Plastic flow, studies, causo of unsatisfactory results,

50, 408.4. theories, physical concepts, 50, 421A .

Plastic flow of ductile metals, 48, 47.Plastic state, conditions for occurrenco, 48,

318.Plastic strain,

brittleness after, 50, 291.4. x-ray analysis, 50, 446.4.

Plasticity,book, 50, 284/1 (review).“ crackless,” 50, 7.1. effect of cold-stretching a t o lo v a t o d

t o m p s ., 50, 150/1, 531.1. mechanism, 50, 597.1. recent researches, 50, 216.4, 342.4. theopr, 50, 531^4.

Plasticity of—Crystals, dopondonco on temp., 50, 531.1. Notched specimens, 50, 174/1.

Plastometry, parallol plat«, 50, 678.4.Plating. Seo Deposition.Platinoid, thermal conductivity at high

temps., 50, 4.4.Platinum (soo also Platinum metals),

action of iodine, 50, 68.4. action of oxides at high tomps., 50, 68.1. assaying, pamphlot, 50, 138.1. book, 50, 410/1 (review). casting in vacuum, 50, 197/1. catalysts, part played in development of

synthotic nitrato industry, 50, 108.4. chemical properties, 50, 148/1. contact-resistance, 50, 344/1. corrosion-resistance to gases, 50, 436/1. crystals, mosaic, 50, 671.4. deposition, 50, 98/1, 632/1. diffraction patterns, 50, 747.4. electrical resistance, chango under hydro

static prcssuro, 50, 422/1; for temps, below 90° K ., 50, 720/1 ; of thin films, variation with temp., effect o f nature o f support, 50, 213.4.

electrodes, action of sulphuric acid, 50, 100/1 ; corroded, 50, 100/1.

electrolytic transfer in hydrochloric acid soln., 50, 68.4.

estimation, potontiomotric, with cuprous chloride soln., 50, 620/1.

evaporation from tungsten filament in vacuum, 50, 420/1.

filaments, coatod with barium oxido, reactions at surface, 50, 341/1; reactions at surface, 50, 340/1.

films, crystalline structure, 50, 237/1 ;olect. properties, 50, 343/1.

flow-pressure, at low tomps., 50, 291/1. freezing point, 50, 68.4. history, 50, 138/1, 148.4. industry, organization, pamphlets, 50,

138/1. leaf, 50, 381/1.magnetic properties, 50, 213.4.

Platinum,magnetic susceptibility, offcct o f cold-

work, 50, 76/1. marketing, 50, 148.4. markets and prices, pamphlet, 50, 138.4. melting in vacuum, 50, 197/1. metallurgy, 50, 138/1, 148.4. mineral resources of U.S.A., pamphlot,

50, 403.4. minerals, pamphlot, 50, 138/1. native, eompn., 50, 466.1. occurrence, 50, 148/1. physical properties, 50, 148/1. price, 50, 148/1.production, 50, 138/1, 148.4; statistics,

50, 381/1. properties, 50, 20/1, 138/1. purification, 50, 148/1. recrystallization, 50, 486/1. refining, pamphlet, 50, 138/1. residues, 50, 648.4.single crystals, sclerometric hardness,

decreaso duo to adsorption of activo substances at surfaco o f contact, 50, 5/1.

specific heat, dopondonco on tomp., 50,726.4.

stamping laws, pamphlot, 50, 138/1. substitutes, pamphlot, 50, 138.4. thermoelectric force down to vory low

tomps., 50, 422.4. thermoelements. Seo Thermocouples. touchstone testing. 50, 553/1, 673/1. uses, 50, 20.4, 138.4, 148/1, in dentistry,

50, 184/1 ; in electro-chem. industry, 50, 100/1.

wires, cold-workod, fibrous structure, 50, • 147/1; tenacity, piozo-oloctric dotn., 50, 446A.

Platinum alloys, analysis, spoetroscopic, 50, 167/1. dental, tonsilo properties, 50, 470.4. use in dontistry, 50, 184.4.

Platinum arsenide, prepn., 50, 20.4.Platinum black,

adsorption of hydrogen, 50, 69.1. precipitation, 50, 69.4.

Platinum-chromium alloys, forromagnotic, 50, 542/1.

Platinum-copper alloys, equilib. diagr., 50, 476/1.

Platinum-gold alloys, age-hardening by small addns. o f iron,

50, 77/1.atomic susceptibility curves, deviation

from theoretical curves, 50, 37.4. constitution, 50, 86/1. crystal structure, 50, 86.1, 553.4. equilibrium diagram, 50, 476.4. lattice constants of solid solns., 50, 486.4.

Platinum-iridium alloys, constitution, 50, 299.1. ferromagnetic, 50, 542.4. filaments, reactions at surface, 50, 340.4. lattice constants of solid solns., 50, 486/1. properties, 50, 20.4, 351.4. substitutes, 50, 351/1. uses, 50, 20/1.wires, for uso in Eotvos torsion balance,

effect of heat-treatment, 50, 342/1.

Subject Index 859

Platinum-iron alloys, electrical resistance, 50, 299-1. hardness, 50, 299.-1. microstructure, 50, 299.1.

Platinum metals (soo also undor names of platinum motals),

absorption oi hydrogen, ndhoronco and naturo of gas absorbed, 50, .'»30.-1.

analysis, spectroscopic, 50, 107.4. in dental alloys, 50, 470.-1. mineral resources of U.S.A., pamphlet,

50, 403.4. output of Mond Nickol Co., 50, 277.1. production, statistics, 50, 381,1. refining, book, 50, 527,1. thermocouple wires, offect o f impurities,

50 94.4.touchstone testing, 50, 553,1, 073.4. volatilization, data summarized, 50,

533.4.Platinum-palladium alloys,

atomic susceptibility curves, deviation from theoretical curves, 50, 37,1.

constitution, 50, 80,1. hardness, effect of hoat-troatmont, 50,

80.4.solubility of hydrogen, 50, 80/1.

Platinum-palladium-gold alloys as substitutes for platinum-iridium alloys, 50,351.1.

Platinum-palladium-iridium alloys as substitutes for platinum-iridium alloys, 50, 351,1.

Platinum-rhodium alloys, lattico constants of solid soins., 50, 486.-1.

Platinum-silver alloys, oquilib. diagr., 50,476.1.

Platinum-tin alloys, specific heat, 50,478.-1. Platnam, use for valvo soatings for uso

with superhoatcd stoam, 50, 108.4. Plumbing,

American recommended requirements, suppt. to, 50, 139.-1.

chemical, book, 50, 589,1, 651.4. Plumbism. Seo Lead, poisoniitg.P.M.G. alloy,

elongation, 50, 295.4. hardener, 50, 428.4. hardness, Brinell, 50, 295.-1.Izod impact strength, 50, 295A . mechanical properties, 50, 295,4 ; com.

pared to gun-motnl, 50, 295,4. properties, 50, 112/1, 377/1. specific gravity, 50, 295/1. tensile strength, 50, 295.4. use in axial flow pumps, 50, 377.4. welding, 50, 112,1. yield-point, 50, 295,1.

Poland, scionco and letters in, book, 50,458.4.

Polarized light,application to engineering, 50, 368/1. metallurgical microscopy by means of,

50, 749.4.Polish on metals, 50, 421.4.Polished metals, electronic diffraction, 50,

421.1.Polishing (soo also Buffing),

books, 50, 333.4, 654.4 (review), 715.4, by flexible wheels, 50, 121.4.

Polishing, fundamentals, 50, 769.-1. metallographic, to retain graphito and

inclusions, 50, 671,1. suggestions, 50, 505,1. time required, 50, 505.4.

Polishing of—Aluminium, 50, 578/1.Brass, castings of awkward shape, 50,

579.-1; pastos, 50, 579,1.Bronze, pastos, 50, 579.-1.Castings, 50, 263/1.Copper, pastes, 50, 579.4.Metallographic specimens. Soo Metal

lography.Polishing wheels,

data, 50, 505.1. flexible, use, 50, 121.4. heading up, 50, 579/1.

Pouring. Seo Casting.Porcelain, deposition of motals on, 50,

«34.4.Poro bronze, 50, 110,1.Positive ions, omission from motals, 50,

219.4, 726.4.Potassium (seo also Alkali metals),

electrical resistance, chango undor hydrostatic pressure, 50, 422.4.

estimation, by porrhenium acid, 50, 310.1; gravimetric, togother with sodium and magnesium, 50, 169.4; in prescnco of sodium porchlorat«- chloroplatinate mothod, 50, 554,1 ; rapid, 50, 169,1; (small amts.), 50, 169,1; vol., 50, 241/1.

photoelectric properties of surfaco exposed to action of atomic hydrogen, 50, 213/1.

reaction products on graphite, structure, 50, 616/1.

review, 50, 590.-1, 719,1.Potassium amalgams,

electrolysis, 50, 80.4. liquid, eloct. conductivity, 50, lAoA.

Potassium-bismuth alloys,KBi„ lattice structure, 50, 363.-1.

Potentials, electrode. Soo Electrode potentials.

Potentiometers. Seo Laboratory apparatus. Powdered metals,

electrical resistance undor prossuro, 50, 5/1.

possibilities, 50, 109.4.preparation of solid pieces by pressing,

&c„ 50, 518.4. pressed, conductivity, 50,

Power plant equipment, t r e n d s m engineer.ing requirements for metals, 50, .>¿1-1.

Praseodymium mercuride, 50, 540/1. Precious metal alloys in dentistry, survey,

50, 81.1. , ,Precious metals (see also undor names of

procious motals), drosses, fluxes, 50, 266.4, 331.4. F o rs c h u n g s in s t itu t für Edelmetalle,

Schwäbische-Gmünd, 50, 64í/l.recovery from electrolytic copper rofin-

ing. 50, 372.4, 684/1. thermocouples. Soo TternwcoupUs. touchstone testing, 50, 5o3/l, 673,1.

860 Subject IndexPrecipitation hardening. Soo Age-harden

ing.President,

address, 48, 27. induction, 48, 19.

Presses, dies, design, 50, 767/1. power requirements, 50, 5 6 /.

Pressing, power- and hand-, 50, 574/1. protection of workers, report, 50, 6 0 / . round blank formulee, 50, B7BA. small quantity production methods, 50,

260/1.Pressing of—

Aluminium and its alloys, 50, 574/1. Brass, hot-, 50, 260/1.Conical cups, graphical dotn. o f blank

size, 50, 504/1.Duralumin artificial limbs, 50, 117/1.

Pressure, high, physics, book, 50, 143/1 (review).

Pressure die-casting. See Die-casting.Prices, motal, for yoars 1900-1930, book,

50, 132.4.Progas aluminium tubes, 50, 685/1.Propellers,

marine, corrosion, 49, 130; 50, 160/1. micro-, uso for high-tomp. m.p. in

vestigations, pamphlet, 50, 716/1. moulding, 50, 391/1, 508/1.

Protection of metals, 50, 29/1, 84.4, 162/1, 234A , 304.4, 359.1, 438/1, 481/1,548/1, 611/1, 669/1, 742/1.

by metallic films, 50, 85A , 304/1. new methods, 50, 84.4.

Protective films, book, 50, 590/1 (review j.Pumps, corrosion-resistant, 50, 83/1.Punching, power requirements, 50, 56/1.Pyrometers (seo also Thermocouples),

Ardometer, 50, 492/1, 757.1. disappearing filament, construction, 50,

44/1.errors, serious, 50, 561/1. for silicon carbide furnaces, 50, 628/1,

757A .micro-, 50, 370/1 ; uso for high-tomp.

molting point investigations, 50, 756A . new, at Koltchugin works (U.S.S.R.),

50, 562.4. optical, 50, 757/1.Optix, 50, 94/1, 492/1, 757/1. potentiometer, Brown, 50, 44/1; Jlicro-

max, 50, 175.4 ; now, 50, 246/1. principles, 50, 44/1, 492.1.Pyro, 50, 492/1, 757/1.Pyrophot, 50, 492/1.Pyropto, 50, 757/1.Pyroversum, 50, 492/1.Pyrradio, 50, 492.4, 757A .radiation, crossed filament, 50, 175/1;

pocket, 50, 313.1. recorder controller, free vano air-

operated, 50, 44/1. recording, errors caused by humidity,

50, 492/1.thermoelectric, Cambridge, 50, 44/1;

construction, 50, 44/1; galvanometers for, prodn., 50, 757A .

Thwing, 50, 681/1.

Pyrometers, total radiation, construction, 50, 44/1. use, 50, 628/1.

Pyrometry, errors, sorious, 50, 561/1. flame, 50, H A .high-temp era ture scale, mtercomparison,

50, 44A .optical, appn. to measurement of

luminous flamo radiation and temp., 50, 628/1.

Pyrophoric alloys, pamphlet, 50, 137.4.

Qualitative analysis. Seo Analysis. Quantitative analysis. Soo Analysis. Quenching. Soo Hcat-trcatmcnt. Quicksilver. Seo M ercury.

Radioactivity, moasuromont by torsion balance, 50, 41/1.

Radiology, 50, 4 3 / , 93/1, 174/1, 246/1, 312/1, 369/1, 447/1, 491.4, 560.4,627/1, 680/1, 755/1.

advances, 50, 448/1. apparatus, 50, 369/4, 5 6 0 /. determination of internal stresses, 50,

43 A .Y-ray, 50, 4 4 7 /. in aluminium industry, 50, 627/1. in foundry, 50, 4 4 8 /, 4 9 2 /. industrial applications, 50, 4 3 /. penumbral shadows, 50, 627/1. specimens, heating device, 50, 2 4 6 /. technique, simplification, for large-scale

investigations, 50, 4 4 7 /. with y-rays, 50, 9 3 / , 755/1, 756/1. x-ray tubes, 400 kv., 50, 9 3 /.

Radiology of—Castings, 48, 290, 293, 295; 50. 2 4 6 /,

680.1, 755/1.Welds, 50, 43A , 93/1, 491A , 5 6 0 / ;

by means of y-rays, 50, 93/1, 4 4 7 /, 750/1.

Radiometal,core loss current, measurement by means

of a.c. potentiomoter, 50, 605/1. magnetizing current, measurement by

means of a.c. potentiometer, 50, 6 0 5 /,Radiometallography, equipment o f now

laboratory, 50, 39/1.Radium, relation to uranium, 50, 70/1.Railway officials, diroctory, 50, 459/1.Ramet, 50, 1 1 9 /, 387.4, 576/1.

manufacture, 50, 261/1. properties, 50, 2 6 1 /.

Rare earth metals. Seo under names of raro metals.

Rare metals (seo also under names of rare metals),

developments, 50, 518.4. pamphlet, 50, 6 4 9 /. preparation and uses, 50, 290.4. properties for high temp, service, 50,

5 3 3 /.Recrystallization,

mechanism, present knowledge, 50, 33/1. phenomena, prevention by short pre

liminary annealing, 50, 1 8 9 /.

Subject Index 861Recrystallization of—•

Aluminium single crystals, 50, 6144. Platinum, 50, 4864.Silver, 50, 4864.Solid solutions, 50, 6154.Tin alloys solid solutions, 50, 6154.

Recrystallization power, restoration by bonding back deformed specimens, 50, 5314.

Refining,at Norddeutsche Afflnerie, 50, 6354. electrolytic, 50, 3174.

Refining of—Aluminium, olectro-, 50, 4514.Bismuth, review of methods, 50, 5194. Copper, blister, removal of antimony,

50, 2044 ; by sories system, 50, 6354 ; developments, 50, 5194 ;electro-, 50, 3174, 4944 ; oloctro-, development at Norddeutsche Affinerie, Hamburg, 50, 4524, 6844 ; formation of anode slimos, 50, 2514 ; (native)' in roverberatory furnace, élimination o f arsonic, 50, 4004 ; rocovery of precious metals, 50, 3724 , 6844 ; removal of selenium and tellurium, 50, 6364 ; withcomplex salts of cuprous chloride, behaviour of antimony, 50, 2504.

Gold, book, 50, 4574 ; electro-, 50, 494 ; electro-, in Japan, 50, 494.

Lead, developments, 50, 5204 ; electro-, 50, 3174 ; failures o f cast-iron kettles, 50, 401/1 ; Harris process, theory and practice, 50, 5204 ; new refinery and its operation at Bunker Hill smelter, 50, 521/1 ; residuos, &c., 50, 2044.

Nickel, 50, 7 6 1 4 ; electro-, 50, 2514, 3174.

Platinum metals, book, 50, 527/1.SUver, book, 50, 4574.Tin, electrolytic, 50, 3184.Zinc, olectro-, 50, 3174.

REFRACTORY MATERIALS— action of carbon monoxide, 50, 2754. advances, 50, 6464 ; in England in 1931,

50, 5854 ; in U.S.A. in 1931,50, 5134. American, characteristics, 50, 7784. analysis, 50, 2004 , 3984 , 5164, 5874. book, 50, 136/1, 2074, 4034.British Refractories Research Associa

tion, 50, 6464. cements, 50, 2734, 3974, 398/1 ; book,

50, 206/1 ; contraction, 50, 1994, 646/1 ; properties, 50, 5154 ; types, uses and testing, 50, 6454.

changes during heating and cooling, 50, 3954.

deformation under heavy load at high temps., testing, 50, 5154.

electrical resistance at olovated temps., 50, 396.4.

estimation of magnesia and alumina, vol., 50, 398/1.

estimation of silica and alumina, 50,3984.

examination, 50, 6464.facings, 50, 2734.for air-heating furnaces, 50, 6454.

Refractory materials— for casting furnaces, 50, 2734. for coreless induction furnaces, 50, 6454. for electric furnaces, 50, 1984, 1994,

5854.for high-temperatures, 50, 1994, 3964,

5854, 586/1; pamphlet, 50, 624. former for elect, heating olomonts, 50,

514/1.French, 50, 3964. gas-permeability, 50, 275/1, 6474. heat conductivity, 50, 274/1. heat transfer, 50, 3954; pamphlet, 50,

634.heat-transmission, A.S.T.M. tentative

definitions of terms relating to, 50, 2014, 3954.

high-temperature, 50, 5144. improvement, 50, 3964. infra-red radiation, 50, 6464. life, factors determining, 50, 5164. load test, 50, 5154. melting point, 50, 756/1. metallurgical, 50, 644/1; book, 50, 7194;

properties, 50, 5844; properties and tests, 50, 5144.

mortars, 50, 5854.permanent volume change, testing, ten

tative revisions of A.S.T.M. standard motliod, 50, 3974.

porosity, testing, tentative rovisions of A.S.T.M. standard method, 50, 3974.

properties, 50, 6454. protection from soot, 50, 3964. rates of flow of water and air through,

comparison, 50, 2754. recent advances, 50, 3954. repairs, 50, 7784.report of A.S.T.M. cttee., 50, 395-4,

5134.research, 50, 5174 ; value, 50, 5174. sieve analysis, pamphlet, 50, 2814. slagging, 50, 2744. special, recent progress, 50, 395/1. specific gravity, detn., 50, 5164. tensile tests at high temps., 50, 2014. terms relating to, A.S.T.M. tentative

rovisions of standards, 50, 2014, 3954. , ,

testing, 50, 3954, 3964, 5094 ; methods, 50, 2004 ; simple method, 50, 586/1.

thermal conductivity, 50, 6474 . thermal expansion, roversiblo, 50, o4ba . total radiation, 50, 6464. trade names, 50, 273/1, 5854. work published in 1931, 50, 6464.

a-Alumina, thermal expansion, 50, 2014.

Aluminium silicate, prepn., properties and uses, 50, 3974.

Carborundum, use for meltmg standard gold alloy in elect, furnace, 50,1994. , , ™ -t-to IChamotte, 50, 274.1; standard, 50, 778 4.

Chromite, thormal expansion, 50, ¿uy*. Clays, detn. of free alumina, 50, 516-4.. Crolite No. 7, 50, 3974.Diaspore, prepn., properties and uses,

50, 3974.

862 Subject Index

Refractory materials—Dinas bricks, influenco of carbon on

transformation o f silica, 50, 274/1. Dolomite, cliem. and phys. properties,

50, 397*4.Firebrick, insulating, 50, 273/1; slagging

and fluxing, 50, 516/1.Fireclay brick, resistance to thermal

spalling action, A.S.T.M. tentative method of control tost, 50, 201A , 397-4 ; softening point, testing, tentativo revisions o f A.S.T.M. standard method, 50, 397/1 ; specifications, 50, 395-1.

Graphite crucibles, manuf., 50, 273*4 ; crucibles, treatment, 50, 331/1 ; use in metallurgical industry, 50, 514.4.

Kaolin, prepn., properties and uses, 50,397.4.

Magnesite, cliem. and phys. properties, 50, 3974 ; progross, 50, 199.4 ; tonsile tests at high temps., 50, 200/1 ; thermal expansion, 50, 201.4. ; uso in copper refining furnaces, 50, 199*4.

Magnesite bricks, unburned, for metallurgical industry, 50, 397/4 ; uses, 50, 379/1.

Magnesium oxide, crucibles impervious to air, 50, 513/1.

Mullite, prepn., properties and uses, 50, 3 9 74 ; thermal expansion, 50, 201*4.

Oxides, tech. progress, 50, 584.4 ; thormal expansion, 50, 200/1.

Plibrico, 50, 778/1.Sands, clay-bearing, properties, 50,

274/1.Silica brick, properties, 50, 5864.Silicon carbide, appns. in metallurgy,

50, 3974.Sillimanite, 50, 586/1; possibilities, 50,

200/1, 273/1; prepn., properties and uses, 50, 3974.

Sterchamol bricks, 50, 7784. Talc, 50, 274/1. Zircon, thermal expansion, 50, 201/1. Zircon bricks, 50, 199/1.Zirconia, fused, thermal expansion, 50, 201 / 1.

Remelting. See under names of metals and alloys.

Research, and Government economy, 50, 402/1. Associations, industrial, difficulties, 50,

401*4. correlation, report o f A.S.T.M. cttoe.,

50, 402/1. in applied physics, 50, 280/1. in industry, pamphlet, 50, 283/1. in theory and practice, 50, 402/1. non-ferrous, value, 50, 275/1. spirit of, book, 50, 283/1, 406.4. state and industrial, 50, 402/1. value to industry, pamphlet, 50,

283/1.Resistal, corrosion by iodine, 50, 303*4.Resistal No. 7, compn., 50, 185/1.Resistance,

electrical. See Electrical resistance. magnetic. See Magnetic resistance.

Resistance limits, Tammann’s, 50, 355/1, G07/1, 741A .

Rhenium, books, 50, 411/1 (review), 588/1. chemistry, 50, 290/1. occurrence, 50, 290,4. pamphlet on properties, prodn., &c., 50,

138/1.preparation, 50, 289.4, 290/1. properties, 50, 289*4, 290/1. review of knowledge, 50, 341.1.

Rhenium sulphides, 50, 20/1.Rhodium (seo also Platinum metals),

atomic heat, 50, 69/1. crucibles, 50, 622/1.deposition, 50, 98/1; using W ilco solns.,

50, 178/1.estimation, 50, 310/1; gravimetric, 50,

749*1.lattice parameters, 50, 362/1. separation, from iridium, 50, 749/1;

from platinum and otlior metals, 50, 310/1.

specific heat, 50, 69/1; dependence on temp., 50, 726/1.

thermal expansion, 50, 69/1. wire-wound furnaces, 50, 622/1.

Rhodium arsenide, prepn., 50, 20/1.Rhodium-palladium alloys,

hardness, 50, 80/1. solubility of hydrogen, 50, 80/1.

Rhodium-platinum alloys, lattice constants o f solid solns., 50, 486/1.

Rhometal, core loss current, measurement by means

of a.c. potentiometer, 50, 605.1. magnetizing current, measurement by

moans of a.c. potentiometer, 50, 605/1.Rigidity modulus, chango causod by cold-

working, 50, 216/1.Rigidity of—

Aircraft instrument diaphragm and spring materials, 50, 82/1, 158/1.

Aluminium, tomp. coeff., 50, 82/1.Brass, temp, coeff., 50, 82/1.Copper, 50, 339/1.Duralumin, temp, coeff., 50, 82/1.Monel metal, temp, coeff., 50, 82/1. Nickel-brass, temp, coeff., 50, 82.1. Phosphor-bronze, temp, coeff., 50, 82/1. Silver, temp, cooff., 50, 82/1.

Risers. See Casting.Riveting, countersunk, 50, 383/1.Riveting of—

Aircraft parts, 50, 765/1.Lautal, 50, 6954 ; sheet coated with

veneer, 50, 5714.Rivets,

choice, for light metal structures, 50, 571/1.

Duralumin, investigation on, 50, 570/1. hollow, closing, 50, 695.4.

Robertson-Bonded-Metal, 50, 613/1. Rods,

cross-section, dotn. from diam. measurements, 50, 278/1.

elastic modulus, dotn. by moans of bonding vibrations, 50, 174/1, 447/1.

tensile properties at low temps., 50, 431 A .

Subject Index 863Roll of Institute, 48, 2 . Rolling,

book, 50, 634.broadening during, explanation by aid

of hypothesis o f stress surfaces, 50,189.4.

cold-. See Cold-rolling. flow surfaces, arrangement, 48, 322. power and energy demands, 48, 337. rates of change of shape, 50, 502/i. stresses in zone between rolls, 48, 341. work done, 50, 3864.

Rolling mills, advances, recent, 50, 1174. bearings, 50, 5734. coiler, 49, 405. drive, motors, 50, 7674. electric drives, 50, 3284. experimental, 50, 7014. for light alloys, erected by Aluminium

Industrie A.G., 50, 3274. hot-, for aluminium sheet, 50, 1174. lubrication, 49, 402. main rolls, mounting and adjustment,

improvements, 49, 403. modernizing, electrically, 50, 3284. non-ferrous, developments, 50, 2594. practice, modern, 49, 392. rolls, changing, 49, 404. shears, 49, 405. Steckel, 50, 1894. 3-high Lauth sheet, 49, 406. 3-high universal, 49, 402.wire, experiences in planning, 50, 5034.

Rolling of—Aluminium, adjustment of rolls by hand

polishing, 50, 1904 ; dressing of rolls by hand grinding, 50, 3274 ; effect on Erichsen value and hardnoss, 50, 6 9 4 ; hot-, metal lubrication and roll cooling, 50, 1904, 3274 ; planning mill practice, 50, 19 04 ; sheet, finish-, 50, 7014.

Aluminium alloys, 50, 1024, 49 64 ; hot-, metal lubrication and roll cooling, 50, 1904, 3274.

Constantan, 50, 4734.Copper, effect o f Erichsen value and

hardness, 50, 694.Elektron, 50, 1554, 5074. Magnesium alloys, 50, 4964. Nickel and its alloys, hot-, modern

plant and equipment, 49, 391. Non-ferrous metals and alloys, book, 50,

459/1. Sections, cold-, 50, 1174.Silver, effect on Erichsen value and

hardness, 50, 694.Silver-copper alloys, effect on Erichsen

value and hardness, 50, 694.Strip, cold-, Steckel process, 50, 1894. Zinc, effect of temp, and impurities, 50,

7014.Rolling texture, alteration in relation to

degree o f deformation, 50, 2384 (see also Deform ation textures).

Rolling texture of—Aluminium, relation to deep drawing

properties and hardness, 50, 694. Cadmium, 50, 354, 5534.

Rolling texture of—Copper, relation to deep drawing pro

perties and hardness, 50, 694. Magnesium, 50, 3634.Silver, relation to deep drawing pro

perties and hardness, 50, 694. Silver-copper alloys, relation to deep

drawing properties and hardnoss, 50, 694.

Zinc, 50, 3634. Rolls,

breakage, causes, 50, 1904; pamphlet, 50, 594.

chilled, investigation, 50, 2594. chromium-plating, 50, 5634. dressing, by hand -grinding, 50, 3274. plate bending, calculation of diam., 50,

1904.preheating, electric induction, 50, 3274. sheet mill, pre-heating, elect, methods,

50, 3274.Röntgen analysis. See Crystal structure.Rose’s alloy, dilatation, 50, 4234.R.R. alloys. Seo Aluminium alloys.Rubber, protective coatings on metals, 50,

3614 ; spraying, 50, 3614.Rubidium (see also Alkali metals),

atomic weight, 50, 664. bibliography, pamphlet, 50, 137/1. electrical resistance, change under hydro

static prossure, 50, 4224. history, pamphlet, 50, 1374. isotopic constitution, 50, 664. markets and prices, pamphlet, 50, 1374. producers and dealers, pamphlet, 50,

1374.production, pamphlet, 50, 137/1. reaction products on graphite structure,

50, 6164.separation, by isoamyl alcohol, 50, 3094. uses, 50, 4554 ; pamphlet, 50, 137*4.

Russ furnace. See iFurnaces, electric.Russia. See Union o f Soviet Socialist

Republics.Ruthenium (seo also Platinum metals),

atomic heat, 50, 694. electrical conductivity, 50, 4194. estimation, colorimetric, 50, 5544. specific heat, 50, 6 9 4 ; between 0° and

1604° C., 50, 4184; dependence on temp., 50, 7264.

Ruthenium arsenide, prepn., 50, 204. Ruthenium carbide, electrical conductivity,

50, 4194.

Safety. See Factor o f safety.Sampling of—

Gold bullion, 50, 874.Metallurgical products, book, 50, 287/1

(review).Sand-blasting, water separators for, im

portance, 50, 1934.Sands, moulding, See Moulding sands.Satco metal, 50, 5404. Sawing,

cold-,50 ,3874 . . , Kn n s 4with band saws, cutting speeds, 50, 118

Sawing-off machines, gear-driven, 50, 1184.

864 Subject IndexScale, removal from metals, 50, 578.-1. Scandium,

atomic weight, 50, 60.-1. bibliography, pamphlot, 50, 137.-1. dealers and importers, pamphlet, 50,

137/1.history, pamphlot, 50, 137.-1. isotopic constitution, 50, 06.-1. markets and prices, pamphlot, 50, 137.4. metallurgy, pamphlet, 50, 137.4. occurrence, pamphlet, 50, 137.-1. production, pamphlet, 50, 137/1. properties, pamphlet, 50, 137/1.

Schuler method for surfaco treatment, 50, 504/1.

Science,in action, book, 50, 413.4 (review). pure and applied, inter-relation, 50,401A .

Scientific papers, preparation, book, 50, 208/1.

Scleron. Seo Skleron.Scrap (seo also undor names of metals

and alloys), baling, 50, 711/1. briquetting machine, 50, 127/1. disposal, 50, 401/1. railroad, recovery, 50, 780/1. recovery, 50, 711.1. use, problems, 50, 518/1.

Screens, round-holo, for testing purposes, A.S.T.M. tontativo spocifioations, 50,93.4. 313.-1.

Screw threads,effect of surface treatment, book, 50,

463/1 (review). stress concentration, dotn. by photo-

olastie method, pamphlet, 50, 716/1. Scurflng machine, 49, 395.Sea-water, corrosion by. Soo Corrosion. Season-cracking. Seo Internal stress. Season-cracking of—

Brass, 50, 427/1.Secondary metals (soo also Scrap),

production, 50, 278/1.Segregate structures, theory o f formation,

50, 478.4.Segregation, inverse. Seo Inverse scgrega-

tion.Selenious acid solutions, offoct o f sunlight,

48, 158.Selenium,

bibliography, 50, 036.4. films, for protection of magnesium alloys,

48, 147 ; registration o f cathodo rays, 50, 292/1.

history, pamphlot, 50, 137.4. imports and exports, pamphlot, 50, 137.-1. markets and prices, pamphlet, 50, 137/1. mineral resources of U.S.A., pamphlet,

50, 404/1. occurrence, pamphlot, 50, 137/1. preparation, pamphlet, 50, 137.1. production, 50, 636/1. production and sales, pamphlet, 50,

137.4.properties, pamphlot, 50, 137/1. removal from copper-refining cycle, 50,

636.4. toxicity, 48, 158. uses, 50, 636.4.

Selenium compounds, toxicity, 48, 158. Semi-conductors, phonomona of trans

formation, 50, 8/1.Separation. Soo Analysis.Shafts, revolving, vibrations, 50, 279/1. Shaping of metals without cutting, 50,

56/1, 57/1, 58/1 (soo also undor various processes).

Sheet,American standard thicknesses, woights

and tolerancos, 50, 278.-1. dents, removal, 50, 328.4. screw-nails for fastening to wood, 50,

278.-1.testing of drawing qualities, 50, 446.4. thin, (light metal), influence of shape of

tonsilo test specimens, 50, 679.4 ; testing, 50, 559/1, 560/1.

working, book, 50, 783.4.Sherardizing, 50, 669/1.

book, 50, 718.-1.effects of carbon in blue powder, 50,

30.1, 305.4.effects of iron, in bluo powder, 50, 30.4,

305.1.versus hot-galvanizing, 50, 163.4.

Shipbuilders, directory, 50, 208/1, 288.1 (review).

Shipbuilding, uso o f non-ferrous materials, 50, 52/1.

Shipowners, diroctory, 50, 208/1, 288.4 (review).

Shrinkage dangor, in casting, 50, 389.4. Shrinkage of—

Brass, offoct of products of combustion, 50, 196/1.

Cobalt-carbon alloys on solidification, 50, 226/1.

Manganese on solidification, 50, 226/1. Manganese-carbon alloys on solidifica

tion, 50, 226.-1.Nickel-carbon alloys on solidification,

50, 226.4.Sil-Fos, 50, 53.-1, 186/1, 696/1.Silberit, uso for jewollery, 50, 686.-1.Silica bricks. See Refractory materials. Silicides,

superconductivity, 50, 352/1.Silicon,

as alloying element, 50, 80/1, 730/1. effect on copper-nickel alloys, 50,

661.4.effect on copper-tin alloys, 50, 661/1. electrical conductivity of molten, 50,

521/1.electrical resistance, offoct o f temp., 50,

8 / 1.estimation, in aluminium and its alloys,

50, 443.-1, 554/1, 555/1 ; in cop jie i- silicon alloys, 50, 169/4.

evaporation, 50, 596/1.Silicon alloys, elcctrothermio prodn., 50,

267/1.Silicon-aluminium alloys (see also A lpax,

M V C alloy, Silum tn, &c.), casting, 50, 294.4. constitution, 50, 600.4. creep, 50, 299/1. effect of sodium, 50, 661/1. electrical conductivity, 50, 10/1.

Subject Index 865Silicon-aluminium alloys,

electrical resistance, effect of heat-treatment, 50, 347/1.

eutectic, hypoeutectic, and hypereutectic, 50, 600/1.

for die-casting, effect o f variation of temp, on impact value, 50, 477/1.

Lorenz number, 50, 10-4. mechanical properties, cffoct of heat-

treatment, 50, 3474. modification, 50, 2944. pistons, 50, 1804. properties, 50, 2944. sand-castings, stress-elongation, stress-

bending, and stress—slip diagr., 50, 7264 ; vibration strength, 50, 720/1.

solid solubility of silicon, 50, 4714. thermal conductivity, 50, 104. uses, 50, 2944 ; in architecture, 50,

1804.wire, elect, conductivity, offect of moch.

and thermal treatment, 50, 2944 ; tensile strength and elect, conductivity depending on moch. and thermal treatment, 50, 2944.

Silicon-aluminium-copper alloys, mechanical properties, 50, 2224, 281/1. physico-chemical investigation, 50, 0014. preparation, 50, 2224, 2814. wire, elect, conductivity, offect of moch.

and thermal treatment, 50, 2944 ; tensile strength, effect of moch. and thermal treatment, 50, 2944.

Silicon-aluminium-iron alloys, aluminium- rich, constitution, 50, 114, 2234.

Silicon-aluminium-magnesium alloys, Al3Mg2, X-rav evidence, 50, 4854. constitution, 50, 3464. electrical conductivity, 50, 10/1. equilibrium diagram, 50, 472/1.Lorenz number, 50, 104.Mg2Si, presence not confirmed by X-rays,

50, 4854. thermal conductivity, 50, 104. Widmanstatten structure, 50, 485/1.

Silicon-brasses, 50, 5384, 5394.Silicon-bronze. See Herculoy.Silicon carbide. Seo Refractory materials.Silicon-copper alloys,

estimation of silicon, 50, 1094. solid solubility of silicon, 50, 3494. solid solutions, mechanism of decompn.,

50, 7444.wires, hard-drawn, for overhead trolley

purposes, field tests, 50, 377/1.Silicon-copper-nickel alloys, copper-rich,

constitution, 50, 349/1.Silicon-magnesium alloys,

chemical properties, 50, 004A . electrical conductivity, 50, 10/1. equilibrium diagram, 50, 604/1. heat-treatment, 50, 6044.Lorenz number, 50, 104. physical properties, 50, 004A . thermal conductivity, 50, 104.

Silicon-nickel alloys, precipitation hardening, 50, 6054.

Silium, 50, 6004.Sillimanite. See Refractory materials,Silmalec, 50, 6014.

VOL. L.

Siluniin (Alpax) (seo also Silicon-alum inium alloys, &c.),

action of superheated steam, 48, 187. casting, 50, 330/1. castings, porosity, 50, 6074.“ catalogue,” 50, 7274. chemical properties, 50, 2234, 5674. chromium-plating, 50, 4494 . corrosion, 50, 4794 ; by acid and

alkaline solns., 50, 244 ; protective action of sodium silicate, 50, 4334 ; tables of rate of attack, 50, 2944.

corrosion-fatigue, 50, 42/1. corrosion-resistance, effect of copper,

50, 3474. density, effect of copper, 50, 347/1. effect of copper, 50, 3474. elastic properties, offect of temp., 48,

255.endurance, 50, 285/1.hardness, offect o f copper. 50, 3474;

effect of porosity, 50, 0074. machining, 50, 5754. mechanical properties, 50, 567A . physical properties, 50, 2234. properties, 50, 2944. sawing, 50, 1184.tensile properties, effect of copper, 50,

3474.use, 50, 294/1, 5674 ; in mines, 50,

5004 ; in shipbuilding, 50, 3754. workshop practice, recommendations,

50, 2234.Silver (see also Precious metals),

action of coffee, 50, 7404. action of tea, 50, 7404. adsorption of silver nitrate by finely-

divided, 50, 2904. assay beads, surface effects caused by

platinum metal«, 50, 4414. capillary, mechanism of formation from

silver sulphide, 50, 4664. casting, 50, 2664.cathode, linear crystn. in electrolysis

of silver nitrate, 50, 6364. characteristic frequency, 50, 714. chromium-plating, 50, 964, 1774,

0294.cold-rolling, preferred orientation pro

duced by, 50, 1644. colouring, 50, 5044. compression fluidity, 48, 48, 56. consumption in arts and industries of

U.S.A., pamphlet, 50, 5884. corrosion by sulphide soJn«,, 50, 264. deposition, 50, 2494 ; analysis o f solns.,

50, 464, 0754, 76 04 ; bright, from cyanide baths, 50, 984 ; brightenero, 50, 984 ; control of soln«., 50, 4504 ; cyanides in relation io , 50, 464, 984, 50, 2484 ; detn. of silver in solns., 50, 99/1 ; detn. of thickness of dopomUt by nomograms, 50, 6824 ; faults, cauw and prevention, 50, 4 5 04 ; from argentoeyanide so In«,, 50, 1784 ;from sulphate, nitrate, fluoborate mid fluoride solns., 50, 984 ; on bra**, matt surface, 50, 0324 ; operation a n*l control of baths, 50, 0824; roe*»very from old plating bath«, 50,

866 Subject IndexSilver,

633.-1 ; spotting, 50, 565.4 ; study of solns., 50, 98.4 ; whit© spots on deposits, 50, 316/1.

deposits, formation of stains, 50, 98.1; protection against tarnishing, 50, £34.4 ; white spots, 50, 316 /i.

detection, 50, 87/1, 366.4. diffusion in lead, 50, 723.4. electrical resistance, change under hydro«

static pressuro, 50, 422.4 ; of films, 50, 596/1.

Erichsen value, ofTect of rolling, 50, 69/1. estimation, in electrolytic copper refinery

slimes, appn. of Volhard method, 50,241.4 ; in load bullion, volumetric, 50, 310/1; in plating solns., 50, 99.4 ; in silver plating baths, 50, 675.4 ; (small amts.), colorimetric, 50, 621.4.

evaporation, 50, 596/1. films, elect, properties, 50, 343/1 ; oloct.

resistance, 50, 596.4.; oloctro-doposition, 50, 565.4 ; registration of cathode rays, 50, 292/1.

finely-divided, adsorption of AgNO,, 50, 290/1.

fiow-pressure, at low temps., 50, 291/1. fluidity, pressure of, 48, 53. foil, preferred orientation produced by

cold-rolling, 50, 290/1. hardness, offect of rolling, 50, 69.1. lattice parameters, 50, 362.4. liberation of oxygen, 49, 317 (Paper). magnetic susceptibility, offoct of cold-

work, 50, 76/1; effect of plastic doformation, 50, 660.4.

melting in H .-F. induction furnace, 50, 583/1, 777/1.

melting point, lowering by oxygen under pressuro, 49, 329.

metallurgy, book, 50, 524.4 ; developments, 50, 379/1.

mineral resources, of California and Oregon, U.S.A., 50, 134.4 ; of eastern states o f U.S.A., 50, 134.4 ; of Idaho and Washington, U.S.A., 50, 134.4 ; o f Nevada, U.S.A., 50, 134.4, 588.4 ; of U.S.A., 50, 134/1; of Utah, U.S.A., 50, 134/1.

mirrors, reflective power for infra-red, 50, 145/1.

native, motallographic study, 50, 362.4. oxidation by nitric acid, hydrazine as

retarding agent, 50, 149.1. photoelectric properties, 50, 213.4, 219.4. plates, hardness, 50, 594.4. positive ion emission, 50, 76.4 , 219.4. protection, new dipping process, 50,

234.1.recovery, from old silver plating baths,

50, 633.4 ; from tin slimes, 50, 520.4. recrystallization, 50, 362.1, 486/1. refining, book, 50, 457/1. reflecting power, ultra-violet minimum,

change on cold-working, 50, 595/1. reflection of long X-rays, 50, 76A , residues, recovery, 50, 648.4. rigidity, temp, coeff., 50, 82/1. rolling, effect on Erichsen value and

hardness, 50, 69/1.

Silver,rolling texture, rotation to deep drawing

properties and hardness, 50, 69/1. sheet, faults in manuf., 50, 701.4 ;

preferred orientation produced by cold-rolling, 50, 164/1.

single crystals, diffraction of electrons, 50, 38/1 ; diffraction of low-speed electrons, 60, 616/1 ; sclerometrichardness, decrease duo to adsorption of active substances at surface of contact, 50, 5/1.

solders. Soo Solders. solubility of oxygen, 50, 290/1. specific heat from 1*35° to 20*3° Iv„ 50,

467/1.spitting, during solidification, 49, 324,

340.standard. Soo Silver-copper alloys. sulphide films, 50, 26.4. tarnishing, prevention, 50, 234/1. tensile properties of whole and soldered

wires, 50, 594.4. thermal conductivity at high temps., 50,

4.4.viscosity of molten, 50, 80.1. wires, whole and soldered, tensile tests,

50, 594.1.Silver alloys,

analysis of coinage, 50, 166.1. annealing, 50, 606/1. assay, corroct sampling, 50, 239/1. casting, 50, 606/1.coinage, analysis, 50, 166.4 ; British,

50, 156/1 ; improving colour, 50,156/1; rigidity, temp, coeff., 50, 158-4.

colour, 50, 476/1.corrosion by sulphide solns., 50, 26/1. corrosion-resistance, 50, 476.4. density, 50, 606/1. etching, 50, 606/1. homogeneity, 50, 476.4. mechanical properties, 50, 606/1. microstructure, 50, 606.4. pickling, 50, 606/1.properties, offect of lieat-troatmont, 50,

476.4.rolling properties, 50, 476.1. sonority, 50, 476.1, 606.4. stamping properties, 50, 606,4. sulphide films, 50, 26*4. tarnish resistant, 50, 667.4. tarnishing, 50, 606.4. transformations in solid state, 50, 606.4. use, historical review, 50, 476.4. weldability, 50, 606.4.Widmanstatten structure, 50, 362.4.

Silver-aluminium alloys, lattice constants, 50, 164.4, 238.4. solid solutions, X-ray study, 50, 164,4,

238/1.Silver-antimony alloys,

constitution, 50, 430.4 ; X -ray study, 50, 36A .

crystal structure, 50, 36.1.Silver-antimony-zinc alloys, constitution,

50, 430/1.Silver-arsenic alloys,

constitution. X -ray study, 50, 36.4. crystal structure, 50, 36/1.

Subject Index 867Silver-bismutli alloys,

constitution, X -ray study, 50, 30/1. crystal structure, 50, 30.1. preparation for quant, analysis, 50, 441.-1.

Silver- cadmium alloys, electrodeposited, chango in reflecting

power causod by tarnishing, 50, 99.-1. eutectoid, tempering and annealing, 50,

256.4. properties, 50, 476.1.

Silver-cadmium-antimony alloys, constitution, 50, 430.4.

Silver-copper alloys, casting, 50, 200/1.constitution, 50, 351/1 ; thermodynamic

study, 50, 730/1 ; X -ray study of copper-rich alloys, 50, 33.4.

elastic limit, 50, 351.1. electrical conductivity, 50, 351.4. electrical resistance, toinp. cooiT., 50,

351/1.equilibrium diagram, 50, 470.4.Erichsen value, cifect o f rolling, 50, 09.1. hardness, 50, 351.4 ; olTect of rolling,

50, 09/1.heat-treatment, effect o f moeh. proper

ties, 50, 351/i. influence of oxygen. Seo S ilccr-coppcr-

oxyijen alloys. inverse segregation, 50, 299.4. lattice dimensions, 50, 480.4. liquation, 49, 347 {Paper). remelting, deoxidizers for, 50, 21/1. rolling, effect on Erichsen value nnd

hardness, 50, 09.4. rolling texture, relation to deop drawing

properties and hardness, 50, 09.4. solid solubility of silver, 50, 480.1, 734/1. solid solutions, now orientations forming

in crystal during pptn., 50, 740/1. solubility of copper at 452° C., 50, 480.4. solubility of silver, at 452“ C., 50, 480,1 ;

X -ray study, 50, 308/1.“ standard silver,” faults in manuf., 50,

734/1 ; improvement, 50, 734/1. supersaturated, sepn. of constituents and

changes of properties, 50, 20.1. surface improvement, 50, 328.4, 700.1. tensile properties, 50, 351.4. viscosity of molten, 50, 80/1. workability, influencoof oxygon, 50, 21.1.

Silver-copper-antimony alloys, constitution, 50, 430.4.

Silver-copper-manganese alloys, constitution, 50, 21.4.

Silver-copper-nickel alloys, properties, 50,470.4.

Silver-copper-nickel-zinc alloys, annealing, 50, 000.4. casting, 50, 000.4. density, 50, 000.1.effect ol oxygen. Soo S ilver-copper-

oxygen alloys. etching, 50, 006.4. liquation, 49, 353. mechanical properties, 50, G0G.4. microstructure, 50, 606.4. pickling, 50, 006.4. preparation, 50, 600.1. properties, 50, 476/1.

Silver-copper-nickel-zinc alloys, refining by additions, 50, 000/1. solidification interval, 50, 600.4. sonority, 50, 000.4. stamping properties, 50, 600/4. tarnishing, 50, 600.4. transformations in solid state, 50, 600.1. weldability, 50, 606. 1 .

Silver-copper-nickel-zinc-cadmium alloys, properties, 50, 476.4.

Silver-copper-oxygen alloys, constitution, 50, 20.4, 21.4. quasi-binary section silver-cuprous oxide,

constitution, 50, 20/1. review of knowledge, 50, 006.1. workability, 50, 21.4.

Silver-copper-paliadium alloys, equilibrium diagram, 50, 476.1.

Silver-copper-phosphorus alloys, constitution, 50, 734/1.

Silver-gold alloys, action of nitric acid, 50, 739.1. action of sulphuric acid, 50, 739.4. atomic susceptibility curves, deviation

from theoretical curves, 50, 37.4. constitution, 50, 21.4. diffusion coefficient, influonco of temp.,

50, 291.1. electrical conductivity, 50, 474/1. electrical resistance, 50, 474.4. electromotive force, 50, 474.1. equilibrium diagram, 50, 476/1.Hall elfect, 50, 296.4 ; relation to lattice

constant, 50, 35/1. lattice constants, relation of Hall effect,

50, 35/1. potential measurements, 50, 21.1. properties, as functions of compn., 50,

474.1.solid solutions, method of study, 50,

474.4.tensile properties, 50, 474.1. thermal expansion, 50, 474.4. thermoelectric effect, 50, 474.4. thermoelectric force down to very low

temps., 50, 422/1.Silver gold-copper alloys, oquilib. diagr.,

50, 476/1.Silver-lantbanum alloys, constitution, 50,

153/1.Silver-lead alloys, solid solubility of load

at 285° C., 50, SA.Silver-manganese alloys, electrode poten-

tial, 50, 79.4.Silver-oxygen system,

constitution, 49, 331. eutectic, 49, 333, 341, 342.

Silver-palladium alloys, equilibrium diagram, 50, 476A . hydrogenized, pliotoolectric and thermo

electric effects, 50, 542/1. lattice constants, 50, 86.4, 553.4 ; of

solid soins., 50, 480.4.Silver phosphides, density, dissociation

pressure and heats of formation, 50, 10/i.

Silver-platinum alloys, equilib. diagr., 50,476.1.

Silver sulphide, liydrogon and, thermal equilib., 50, 431.4.

868 Subject IndexSilver-tin alloys,

constitution, X-ray study, 50, 35/i. crystal structure, 50, 35/i. properties, 50, 476.1.

Silver-zinc alloys,0-phase, transformations, X-ray study,

50, 158/1. corrosion by acids, 50, 357/1. properties, 50, 470/1.

Silver-zinc-cadmium alloys, properties, 50, 476/1.

Silver-zinc-copper alloys, constitution, 50, 664.-1. review of recent investigations, 50,

227A .Silveroid, corrosion by sea-water, 48, 109.Single crystals, 50, 507/1.

deformation, offoct o f temp., 48, 247. electron diffraction, 50, 38/1, 440/1, 660.4. ferromagnetic, magnetic behaviour,

pamphlet, 50, 782.4. hardness, scleromotric, decrease duo to

adsorption o f activo substances at surfaco o f contact, 50, 5.4.

magnetization, theory, verification, 50,345.4.

transformations, 50, 306.1. wires, geometrical method for detg.

crystal axes, 50, 671/1.Single-crystals of—

Aluminium, behaviour under alternating torsional stresses in slow stream of tap- water, 50, 300/t ; bent wires, retardation of rocrystallization power by bonding back. 50, l / l ; compressed plates, arrangement of micro-crystals, 50, 307/1, 615.4 ; preparation, 50, 1/1 ; rocrystn.,50, 614/1 ; sclorometric hardness, decrease duo to adsorption of active substances at surface of contact, 50, 5/1.

Antimony, scleromotric hardness, decrease due to adsorption o f activo substances at surface of contact, 50, 5/1.

Arsenic, sclorometric hardness, docreaso duo to adsorption o f activo substances at surfaco of contact, 50, 5/1.

Beryllium, 49, 390.Binary intermetallic compounds, at

tempts to produce, 50, 308/1.Bismuth, behaviour under alternating

torsional stresses, 48, 227 (P a p e r ) ; diamagnetism, 50, 218/1 ; Hall effect, 50, 593.4 ; macroscopic and lattice expansion, 50, 209/1 ; magnetic susceptibility, dependence on field, 50, 657/1 ; inotamagnetism. 50, 722.1 ; metamagnotism, effect o f impurities, 50, 66/1 ; sclerometric hardness, decrease duo to adsorption o f activo substances at surfaco of contact, 50, 5/1 ; thermal expansion, X-ray studies, 50, 593/1; thermo- and galvano-magnotic properties, 50,593.4 ; thermoelectric power near melting point, 50, .657.4 ; X -ray studies, 50, 417/1.

Cadmium, elect, conductivity, 50, 596.4 ; sclerometric hardness, decrease due to adsorption of activo substances at

Single-crystals of—surface o f contact, 50, 5/1 ; thermal conductivity, 50, 596/1.

Cobalt, magnotization at high temps., 50, 1/1 ; magnotization at high temps., 50, 146/1.

Copper, dotn. o f volocity o f dissoln. of different faces, 50, 301/1 : diffraction o f oloctrons, 50, 38/1 ; diffraction of low-spoed eloctrons, 50, 616.-1 ;scleromotric hardness, decrease duo to adsorption o f activo substances at surfaco o f contact, 50, 5.4 ; solution velocities on different facos, 50, 339/1.

Gold-copper alloys, action of reagents, X -ray study, 50, 355/1, 480.4.

Lead, sclerometric hardness, .docreaso duo to adsorption o f activo substances at surfaco of contact, 50, 5/1.

Magnesium, phys. anisotropy, 50, 2.4, 530.4; phys. properties, 50, 212A ; plastic doformation, 50, 2/1, 530/1.

Mercury, thermal conductivity, 50, 595/1 ; thermoelectric power, 50, 595/1 ; Wiedemann—Franz-Lorenz value, 50, 595/1.

Nickel, prepn. by Bridgman mothod, furnaco and cruciblo clovico for, 50, 312/1.

Platinum, sclorometric hardness, decrease duo to adsorption of activo substances at surface of contact, 50, 5.4.

Silver, diffraction of electrons, 50, 38.4 ; diffraction of low-speed electrons, 50, 616/1 ; scleromotric hardness,decroaso duo to adsorption o f active substances at surfaco of contact, 50,5.1.

Tellurium, elect, rosistanco, effect of annealing, 50, 213/1.

Tin, olect. resistance at temps, below 90° K., 50, 726/1.

Zinc, alternating torsional tests, 50, 467/1 ; eloct. conductivity, 50, 596/1 ; olectrodo potential, 50, 452/1 ; hemispherical, crystal growth, 50, 616/1 ; spectroscopically pure, elect, properties, 50, 3/1 ; therm:il conductivity, 50, 596.4.

Skleron, chemical properties, 50, 223.4. elastic properties, offect o f temp., 48, 255. endurance, 50, 558/1. physical properties, 50, 223.1. use in railway waggons, 50, 179/1. workshop practice, recommendations,

50, 223.1.Slags, corrosivo power and constitution,

50, 274/1.Slip, 48, 228, 319; 50, 659/1, 753/1.

in plastic materials, 50, 291/1.Smoke indicators and recorders, 50, 643/1.Sodium (seo also Alkali mctaU),

conductor, 4000-amp., 50, 569.1, 764.4. electrical resistance, change under hydro

static pressure, 50, 422/1. estimation, in aluminium, 50, 675.-1,

676/1 ; in aluminium, spectrographic, 50, 676.4 ; indiroct col., based on reduction and titration of uranium

Subject Index 869Sodium,

in magnesium sodium uranyl acetate, 50, 444/1 ; o f minute amts. by magnesium uranyl acetato method, errors involved, 50, 310-4 ; oxidimetric, 50,90.4.

review, 50, 59G/1 ; of information, 50, 719/1.

Sodium amalgams, dilute, kinetics of dissoln., 50, 542.4. electrolysis, 50, 80/1. formation from sodium chlorido soins.,

detailed study, 50, 2524. liquid, eloct. conductivity, 50, 733/1 ;

study of, 50, 003.4.Sodium-antimony alloys, NaSb, lattice

structure, 50, 303.4.Sodium-bismutli alloys, NaBi, lattice

structure, 50, 363.4.Sodium-calcium alloys, equilibrium

diagram, 50, 6014.Sodium intermetallic compounds, 50, 4314.Sodium-lead alloys, X -ray study, 50, 4314.Sodium-thallium alloys, NaTl, lattice

structure, 50, 3634.Sodium-tin alloys, X -ray study, 50, 431/1.Soft soldering. See Soldering.Softening of deformed metals, timo law,

50, 64 , 3424.Soils, corrosion by. See Corrosion.Soldering,

autogenous, oxy-acetyleno, 50, 765.1. fluxes, table of, 50, 110.4. furnace, Amiantha, 50, 1294. heavy, 50, 6964. irons, elect, heater for, 50, 6964. silver, 50, 4994 ; of metal parts, 50,

111/1 ; structure of joints, 50, 1864. soft, bibliography, 50, 1114; reviow,

50, 111.4. with aid of lead bath, 50, 383.1. without soldering iron, 50, 6964.

Soldering of—Aluminium, 50, 2574, 6954 ; foil, 50,

3244 ; with Alulot solders, 50, 2574. Automobile radiators, seam failures, 50,

274.Copper (hard-drawn), 50, 1464 ; tubes,

50, 4994.Lead, 50, 534.Monel metal, 50, 19.4.Nickel alloys, 50, 1884.Widia, 50, 1104.

Solders (see also under names of constituent metals),

Alulot, 50, 2574.Alumaweld, 50, 3834, 6954. aluminium, 50, 6954 ; hard, 50, 4994. brass, hard, 50, 4994. brazing, Sil-Fos, 50, 1864. cadmium in, 50, 6964. cored, British Standard specification,

50, 2064 ; resin filled, British Standard specification, 50, 2574.

Kester, 50, 6964.low melting-point for aluminium cans,

50, 3204. porosity, 50, 2964. practical notes, 50, 1104.Sil-Fos, 534, 1864, 6964.

Solders,silver, advantages, 50, 4994 ; analysis,

A.S.T.M. tentative mothod, 50, 1664, 2404 ; brazing with, 50, 695/1 ;compn., 50, 6954 ; effect of im- puritios, 50, 1114; for brazing, 50, 57 14 ; in engineering construction, 50, 1114; properties, 50, 1114;uses, 50, 1864.

soft, British Standard specifications, 50, 2064, 256/1 ; cadmium in, 50, 383/1 ; effect of antimony, 50, 3244 ; review, 50, 1114.

tin, book, 50, 5914 (review). wiping, phys. properties, 50, 2964 ;

phys. properties, pamphlet, 50, 2824.Solid solutions (see also A lloys),

constitution, survoy of recent work, 50, 7454.

crystallization, 50, 1594. decomposition, 50, 7444, 7454. diamagnetism, 50, 6654. diffusion in, 50, 7444, 745.1. dilute, eloct. properties, 50, 15/1. homogeneous, rate of formation, 50,

164.nature, X-ray study, 50, 1644. paramagnetism, 50, 6654. recrystallization, 50, 6154. segregations, formation and external

forms, 50, 3074. transport and transport potentials, 50,

3534, 3544.Solidification, in relation to metallurgical

and geological problems, 50, 2994.Solidification of metals, 50, 2154.Solidification shrinkage. See Shrinkage.Sound, velocity, in solid and liquid metals,

detn., 50, 3684.Spark gaps, timo lag, 50, 2554.Specific gravity of—

P.M.G. alloy, 50, 2954. Strontium-cadmium alloys, 50, 1574.

Specific heat (see also Atom ic heal),at high temperatures, exact measure

ment, 50, 4704. at temperatures of liquid helium, 50,467.1. at very low temperatures, 50, 8.1. effect of cold-work, 50, 84. exact measurement between 0° and 1625°

C., 50, 4784.Specific heat of—

Beryllium, 50, 7214.Cobalt, dependence on temp., 50, 7264. Copper-cadmium alloys, 50, 1524. Elements of Group VIII o f periodic table,

dependence on temp., 50, 7264. Iridium, between 0° and 1604° C., 50,

4 1 8 4 ; dependence on temp., 50, 7264.

Iron, dependence on temp., 50, 726.4. Nickel, dependence on temp., 50, 7264. Osmium, dependence on temp., 50, 7264. Palladium, 50, 694 ; dependence on

temp., 50, 7264.Platinum, dependence on temp., 50,

7264.Platinum-tin alloys, 50, 4784.Rhodium, 50, 694 ; dependence on

temp., 50, 7264.

870 Subject IndexSpecific heat of—

Ruthenium, 50, 09A ; between 0° and 1604° C., 50, 418/1; dopondenco on temp., 50, 720.1.

Silver from 1-35° to 20-3° K ., 50, 407.4. Solids at ordinary temps., simplo method

for dotn., 50, 721/1.Tin (pure, tetragonal), 50, 478.1.

Spectra, index, 50, 03/1.Spectrographs. Sco Laboratory apparatus.Spectrometers. Seo laboratory apparatus.Spectroscopy,

X -ray , advances, 50, 237/1 ; book, 50, 528/1 {review).

Speiss, nickel. Seo Nickel.Spelter. Seo Zinc.Spinning of—

Monel metal pistons, 50, 328/1.Sprayed coatings,

adherence, 50, 301/1. corrosion, 50, 306/1; by iluo gases, 50,

230.4.Spraying of—

Aluminium, appns., 50, 235/4.Iron, with aluminium, 50, 306/i.Metals, advances, 50, 30A ; os protection

against corrosion, 50, 306/1; improvements, 50, 577/1; Metalayer procoss, 50, 670/1; on clay products, 50, 693/1; on paper, 50, 497*1 ; Schoop process, 50, 484/1.

Sputtered films, colours, 50, 8.1.Sputtering, cathodic, commercial appn., 50,

694/1.Stabilizing of metals by rotary magnotic

treatment, 50, 0/1.Stainless steels. Sco Steels.Stalloy,

core loss current, measurement by means o f o.c. potentiomotor, 50, 005.1.

magnetizing current, measurement by moans of a.c. potentiomotor, 50, 605/1.

Stamping, blanks, formulai, 50, 260/1.Stamping of—

Aluminium alloys, 50, 192/1, 574.4. Flanged cup, detn. of blank size, 50,

387/1.Magnesium alloys, 50, 192.4. Silver-copper-nickel-zinc alloys, proper

ties, 50, 606/1.Small parts, adjustable toggle-joint sub

press, 50, 260.4.Stamps,

construction, 50, 117/1. drop-, automatic friction, 50, 117A .

Standard silver, thermoelectric, force down to very low temps., 50, 422/1.

Standardization, 50, 779.4. bibliography, 50, 407/1.

Statistics, book, 50, 457A .mineral. See M ineral statistics.

Steam, purifier, 50, 83/1.Steels,

action of beer, 50, 609.1. age-hardening, effect o f magnetic treat

ment, 50, 660/1. analysis, book, 50, 056.4 (review). cadmium-plating of castings, 50, 176/1,

314.4.

Steels,carbon-, gas corrosion at high temps.,

roport, 50, 205/1. cementation by chromium, 50, 614.1. Chromium-plating for wear-rcsistanco,

50, 96.4, 449.4, 563.4, 758/1 ; on dies, 50, 563/1 ; on rolls, 50, 563.4.

coatings on, metallic, 50, 361/1. cold-rolled plates, internal stress, 50,

729.4. colouring, 50, 504.4.corrosion, 50, 27/1 ; by bloaching liquors

in textilo industry, 50, 435/1 ; by distilled water and wilt soins., prevention by addn. o f sodium dichroma te, 50, 358/1 ; by hot vapours of cracked petrol, 50, 230.4 ; by iodine, 50, 303/1 ; field tests of inotallic coatings, report ofA.S.T.M. sub-ctteo., 50, 304.4 ; report of A.S.T.M. cttco., 50, 549/1.

corrosion-fatigue, 50, 42/1 ; effect of cadmium or zinc coatings, 50, 314A ; effect o f pickling, 50, 314.4 ; influonco o f hoat-treatmont and chcm. compn. on resistance to, 49, 36.

density, effect of torsion, 50, 059/1. electrical resistance, effect of torsion, 50,

059/1.electrodeposits on, resistance to sea

water, 50, 742/1. endurance, 50, 558/1. endurance properties, offect of zinc coat

ings, 50, 482A , 070/1. estimation of copper, 50, 39.4. estimation of nickel, 50, 39.4. estimation of tin, 50, 90/1. fatigue, 49, 107, 530/1 ; effoct o f lanolino

coating, 49, 103. fluidity, pressure of, 48, 53. foundry, handbook, 50, 1424 (review). galvanizing. Seo Galvanizing. hardness, effect of cold-rolling, 50, 0.4, literature, roview for 1931, 50, 2824. nickel-clad tank cars, 50, 85.1. patent literature, book, 50, 7824. plates, Nickel-Clad, 50, 5514. quenching media, pamphlet, 50, GO/1, reflection of long X-rays, 50, 764. rigidity, modulus, change duo to cold-

working, 50, 216/1 ; temp, coeff., 50, 1584.

special, book, 50, 4584. stainless, book, 50, 528/1 (review) ; weld

ing, 50, 1134. strengthening on cold-rolling, 50, 6/1. stress-endurance curves, 49, 20. tensile properties, effect of cold-rolling,

50, 0.1 ; o f rods at low temps., 50, 431/1.

torsion, effect on density, dimensions and elect, resistance, 50, 6594.

tubes, corrosion-resistant linings, 50,85.1 ; protection, 50, 304.

uses, book, 50, 457/1. wear-resistance, pamphlet, 50, 0 1 /1 . welding, electric, use of aluminium in

electrodes, 50, 320.4. wire, bending capacity, 50, 4314 ; elastio

extension under longitudinal stress, 50, 704 ; metallization, 50, 0134,

Subject Index 871Stellite,

chemical properties, 50, 536.4, composition, 50, 536/1. cutting tools, 50, 530.-1. hard-facing of dies, 50, 105.4. hard-facing with, 50, 698/1. machine parts, 50, 536.1. physical properties, 50, 530.1. tips on picks, 50, 105/1.

Stelliting of—Trimming dies, 50, 705.1.Worn dies, 50, 388.1, 705.1.

Strain and magnetic orientation, 50, 664.-1.

Strain figures, formation on coppor surfaco, 50, 147.4.

Strain-hardening,effect of cold-work, 50, 7/1. in polycrystalline metals, simplo model

explaining, 50, 291/1. rate and limits, 50, 0.4.

Strength of materials, 50, 150/1, 421/1. Stress-corrosion. Seo Corrosion.Stresses,

analysis, photooloctric mothods, 50, 446.-1.

distribution, ill anglo plato, 50, 92/1 ;in fusion joints, 50, 174/1.

dynamic, time of relaxation undor, 50,026.4.

failure under, 50, 244/1. internal. Seo Internal stresses. latent. See Internal stress. optical analysis, 50, 92/1. permissible, deln., 50, 626.-1.

Strip,annealing, 50, 570/1 ; in continuous fur

nace, 50, 694.-1, 765/1. coiler, 49, 405.cold-rolling by Steckel procoss, 50,

189.1.hot-working, modorn works plant and

equipment, 49, 391. ingots, casting, mould materials for, 49,

203 (Paper). thin, stability under slioaring forces in

plane of strip, 50, 559/1,Strontium,

atomic weight, 50, 60.-1. chemistry, book, 50, 411.4. detection, 50, 87.4, 366.-1 ; by flame

coloration, 50, 673.-1. electrical resistance, chango under hydro

static pressure, 50, 422.4. isotopic constitution, 50, 66/1. uses, 50, 375/1.

Strontium-cadmium alloys, constitution, 50, 157/1. hardness, 50, 157/1. preparation, 50, 157/1. specific gravity, 50, 157/4.

Strontium-tin alloys, properties, 50, 21.-1.

Structure,crystal. See Crystal structure. rolling. Seo Polling texture.

Student Members, eloction, 48, 18, 315;49, 15.

Sub-boundary structures, 50, 614.4, Sulphide films on metals, 50, 150-4.

Sulphur,affinity for rhenium, 50, 20.1. affinity of metals to, 50, 431.-1.

Sulphur chloride, action on aluminium, 50, 354.-1.

Sulphur-nickel-iron alloys, constitution, 50, 298/1.

Sulphuric acid, corrosion by. SeeCorrosion.

Superconductive circuits, strength of persistent currents, 50, 470/1.

Superconductivity, at high frequencies, 50, 217/1. orientation effect, 50, 72.4. theory, 50, 599.-1 ; wavo-meehanics, 50,

293.4.with alternating current at high-

frequency, 50, 423/1. with high-frequency currents, 50, 599/1. with respect to alternating currents, 50,

293/1.Superconductivity of—

Alloys, 50, 607/1 : containing gold and silver, 50, 428/1.

Borides, 50, 352.-1.Carbides, 50, 352.4.Gold-bismuth alloys, 50, 16.4.Lead, 50, 418/1 ; at high frequencies,

50, 217/1.Lead -bismuth alloys, 50, 604/1. Lead-thallium alloys, 50, 604.4. Mercury-cadmium alloys, 50, 475/1. Nitrides, 50, 352/1.Silicides, 50, 352.4.Tantalum carbide, 50, 352.4.Tantalum silicide, 50, 352/1.Tin, 50, 418.4 ; at high frequencies,

50, 217.4 j with respect to a.c., 50, 293/1.

Titanium carbide, 50, 352.4.Titanium nitride, 50, 352.4.Zirconium boride, 50, 352/1.Zirconium carbide, 50, 352.4.Zirconium nitride, 50, 352/1.

Superconductors, dilatation, 50, 423/1. Supercooling, thoory, 50, 149/1. Supercooling of—

Copper, 50, 146.4.Lead, 50, 148/1.Tin, 50, 148/1.Zinc, 50, 148/1.

Super-Duralumin. See Duralumin. Supersaturation, 50, 478/1.Supra alloy, compn., 50, 000.4.Surface tension of—

Gold lamella?, 50, 339/1.Mercury, 50, 594.-1.

Surfaces,metallic, offeet of mech. working on

state of, 50, 71/1 ; exchange ofenergy botween organic materials in molecular beam, and, 50, 714.

Sweden,electrochemical industry, 50, 100/4. Statens Provningsanstalt, report, 50,

138.-1.

Tan liquors, corrosion by, 50, 303.1, 547/1.

872 Subject IndexTantalum,

absorption of gases, 50, 468,1. analysis, spectroscopic, cathodo-ray

method, 50, 240,1. anodic polarization, chem. naturo of

oxide layers, 50, 280.4. as material for laboratory apparatus, 50,

445.1.atomic weight, 50, 596,1. corrosion-resistance to gases, 50, 436,1. electrical resistance, 50, 420,1 ; change

under hydrostatic prossure, 50, 422,1. incandescent, reaction with gases, 50,

466.1.lattice parameters, 50, 362.1.photoelectric properties, 50, 213.4, 219,1.separation of tin, 50, 366. !.thermal electromotive force, 50, 420.4.thermoelectric power, 50, 724,1.total radiation, 50, 420,1.uses, 50, 498-1.

Tantalum carbide, cemented, compared with cemented

tungsten carbide cutting tools, 50,81,1 ; research on, 50, 81,1 (seo also Hamel).

cutting tools, cutting speeds, 50, 575.4. physical properties, 50, 21,1. radiating properties, 50, 21,1. superconductivity, 50, 352,1.

Tantalum silicide, superconductivity, 50,352.1.

Tapping spoeds, 50, 260,1.Tapping of aluminium, 50, 118.-1. Tarnishing of—

Chromium deposit* on brass, 50, 177,1. Chromium-plated brass, 50, 96.-1.Silver, prevention, 50, 234.4.Silver alloys, 50, 667,1.Silver-cadmium alloys, change in reflect

ing power caused by, 50, 99.-1.Taurus bronzes, 50, 708.4, 709.4.Tea, action on metals, 50, 740/1.Technical papers, preparation, book, 50,

208.1.Technical writing, book, 50, 61,1, 714.1. Telektal,

wire, eloct. conductivity, effect of moch. and thermal treatment, 50, 294A ; tensile strength, offect of moch. and thormal treatment, 50, 294/1.

Tellurium, bibliography, 50, 636/1. deposition, 50, 636/1. electrical resistance of singlo crystals,

effect of annoaling, 50, 213/1.Hall effect, revorsals, 50, 724/1 ; with

audio-frequency currents, 50, 596/1. history, pamphlet, 50, 137/1. markets and prices, pamphlot, 50, 137.4. mineral resources of U.S.A., pamphlet,

50, 404.-1. occurrence, pamphlet, 50, 137.-1. preparation, pamphlet, 50, 131 A . production, process, 50, 636/1. production and sales, pamphlot, 50,

137/1.properties, pamphlet, 50, 137/1. removal from copper refining cycle, 50,

Tellurium,single crystals, elect, resistance, offect of

annealing, 50, 213.-1. uses, 50, 636.4.

Tellurium amalgams, Hall offect, 50, 227.4.Temperature,

control, by photoolectric tube apparatus, 50, 370/1.

controllers. Seo Laboratory apparatus. distribution in solids during heating and

cooling, 50, 279.-1. effect on'properties of metals, 50, 751.-1 ;

symposium, 50, 205/1 ; report ofjoint cttec. of A.S.T.M. and A.S.M.E., 50, 290.-1, 531/1.

high. Seo High temperatures. low. See Low temperatures. measurement, 50, 370/1 (see also

Pyrometry). regulators. Seo Laboratory apparatus.

Tempering. Seo Annealing, Heat-treatment, Ac.

Tempering of—Eutectoid alloys, 50, 256.4.

Tenacity, of notched specimens, 50, 174.4.

Tensile properties, relation to hardness, 50,754.4.

Tensile properties of—- Aldrey, rods at low temps., 50, 431.4 ;

wire, effoct of moch. and thermal treatment, 50, 294/1.

Aluminium, conductors, effoct of annealing, 50, 65/1 ; effect of iron, 50, 66/1 ; rods at low temps., 50, 431/1 ; transmission cables, effect of short circuit currents, 50, 65/1 ; wire, offoct of mech. and thermal treatment, 50, 294/1, 417/1.

Aluminium alloys, influence of treatmont with mixtures of nitrogen and volatilo chlorides, 49, 305.

Aluminium-“ bronzes,” 50, 601.-1. Aluminium-copper alloy wire, effoct of

mech. and thermal treatment, 50, 294/1.

Aluminium-copper-silicon alloy wire, offect of mech. and thormal treatment, 50, 294.4.

Aluminium- silicon alloy wire,- offect of mech. and thermal troatmont, 50,294.4.

A.P. 33 alloy, 50, 425.4.Armco iron, effect of cold-rolling, 50, 56.-1. Brass, at high temps., 50, 477.4 ; effect of

cold-rolling, 50, 6/1. a-Brass, effect of different oloments, 49,

252.0-Brass, 50, 731.1.Bronze rods at low temps., 50, 431.4. Cold-worked metals and alloys, calcula

tion from Brinell hardness, 50, 6.4. Copper, as function of temp., 50, 210/1 ;

(lopendenceon rate of strain, 50, 291-4 ; effect of cold-rolling, 50, 6.4 ; in gaseous medio, 50, 210.-1; rods at low temps., 50,431/1 ; transmission cables, effect of short circuit currents, 50, 65.-1.

Dental alloys, 50, 176/1.

Subject Index 873Tensile properties of—

Duralplat, 50, 4254, 728/1.Duralumin, at high temps., 50, 4774.Elektron, 50, 154/1. Gold-silver alloys, 50, 474/1.Iron, depondonce on rate of strain, 50,

2914.Monel metal, at low temps., 50, 794 ;

effect of cold-rolling, 50, 64.Nickel, 49, 289 ; offect of added oie-

monts, 49, 291 ; effect o f diam. of wire, 49, 291.

Palladium alloys for dental purposes, 50, 4764.

Phosphor-bronze, at high temps., 50, 477/i.

Platinum alloys for dental purposes, 50, 4764.

P.M.G. alloy, 50, 295/1.Rods at low temps., 50, 431/1.Silver-copper alloys, 50, 3514.Steel, offoct o f cold-rolling, 50, 64 ; rods

at low temps., 50, 4314.Telektal wire, offect of mech. and thermal

treatment, 50, 2944.Wires at low temps., 50, 4314.

Tensile stresses, dependence on rate of strain, 50, 2914.

Tension testing. Seo Testing.Tensometer. See Testing machines.Ternary diagrams. Seo Equilibrium dia

grams.

TESTING, METHODS OF—Testing

abrasion, 50, 414, 2434, 559/1. advances, 50, 7504. bend, to reveal lugh• température char

acteristics, 50, 2434. book, 50, 4574.British Air Ministry regulations and

schedule o f charges, 50, 914. cohesion, 50, 368/1. congress of New International Asso

ciation for Testing- Materials, 50, 174A , 401/1, 7784, 779/1.

corrosion-fatigue, effect of notchcs, 50, 424.

creep, 50, 4744, 6584, 659/1, 7514 ; accelerated, 50, 7524 ; method, 50, 5584 ; special tests, 49, 296, 299 ; value of short-time tests, 50, 558/1.

cupping, of thin sheet, 50, 5594. damping, 50, 424, 924. discussion by French Assoc. Test.

Mat., 50, 625/1. ductility, bend, A.S.T.M. tentativo

method, 50, 3134 ; o f castings, 48, 293.

dynamic, 50, 5584. endurance, characteristics of tests, 49,

23 ; detn. of time-oxtension limit, 50, 6264 ; with Schenck machine, 50, 558-4.

Erichsen, of thin sheet, 50, 559/1. fatigue, internal losses, 50, 7534 ; of

welds, 50, 3134 ; of wire, 50, 313/1 ; significance and limitations of result«, 50, 4694 ; special methods, 50, 424.

Testing, methods of—hardness, Brinell, nomogram for read

ing numbers between 50 and 313*3, 50, 4914 ; by pendulum, 50, 754.4 ; by Poldi-Hütte’s apparatus, nomogram for, 50, 491/1 ; by rebound of ball, 50, 491/1 ; by scratching standard plates, 50, 4914 ; by Vickers* diamond pyramid machine, 50, 312/1 ; comparison of Rockwell and Herbert apparatus, 50,4904 ; fundamentals, 50, 754/1 ; industrial, 50, 7554 ; relation between Rockwell, Herbert, Brinell, and Shore numbers, 50, 4904 ; Rockwell, proposed methods, 50,312.4 ; Vickers,50,424.

high-temperature, 50, 7514. impact, notchod-bar, in light of present

knowledge, 50, 3124 ; notched-bar, instrument for cutting notches, 50, 245/1 ; notchod-bar, size of specimens, 50, 244/1 ; notched-bar,sources of error, 50, 754/1 ; notched- bar, standardization, 50, 3694 ; notched-bar, striko of hammer, 50, 2444.

internal friction, 50, 424. International Association for Testing

Materials, 50, 7784 ; report ofZürich congress, 50, 6504 ; work of metals section at Zürich congress, 50, 779.1 ; Zürich congress, 50, 4014.

laboratory, equipment, 50, 2434 ; in relation to design, 50, 4464 ; secondary to servico tests, 50, 6254.

magnetic, A.S.T.M. tentativo definitions of terms, 50, 3134.

mechanical, book, 50, 2844 (review);at high temps., 50, 414.

methods, report of A.S.T.M. cttee., 50, 3124, 5574.

non-destructive, elect, method, 50, 6254.

notched specimens, plasticity and tenacity, 50, 1744.

porosity, of castings, 48, 292, 293. principles, 50, 3684, 557/1. proof stress, 50, 424. samples for, choice, 50, 7504. shock, 50, 7544.stamping, relation of test results to

tensile tests, 50, 6264. standardization, 50, 7504. stress, by optical analysis, 50, 924. tensile, at high temps., elect, furnace

for, 50, 404 ; autographic apparatus for drawing stress-strain curves for sheet specimens, 50, 6264 ; be- haviourof metals,50, 4904 ; changes in length of specimens, measurement, 50, 245/1 ; lateral contraction of test-pioce, 50, 2454 ; mechanics, 50, 3684 ; of thin light metal sheets, influence of shape of specimen, 50, 679/1 ; on notched rods, 50, 3684 ; proposed requirements for speed, 50, 3124 ; relation of stamping test results, 50, 6264 ; stages in development of apparatus, 50, 2454.

874 Subject IndexTesting, methods of—

terms relating to, proposod definitions, 50, 3 1 -.1 ; tentative revisions ofA.S.T.M. standard definitions, 50,312.1.

torsion, offoet of notclios, 50, 42/1. wear, 50, 243.4, 75U .

Testing machines, alternating endurance, 50, 43.4. brittleness, 50, 752.4. calibration, full-load, of machine of

000,000 lb. capacity, 50, '147.!. compound lever, 1250-ton, 50, 308.1. construction, 50, 490/1. creep, 50, 149.4, 751.4 ; at Massachu

setts Institute of Technology, 50,313. 1.damping, Foppl-Portz, 50, 42.1. ductility, 50, 92/1.endurance, for low-temps., 50, 313.1;

Schenck, 50, 558.4. exhibition at A.S.T.M. mooting, 50,

557.4.extensometers, automatic autographic,

50, 490.4; construction and uso, 50, 079.4.

fatigue, at Russian Institute of Metals, 50, 244/1; 7-ton 50-cycle, 50, 244.4.

Foppl Heydekampf, for'static bonding and fatigue test«, 50, 309.4.

for long-period temperature-stress tests, 50, 440.4.

hardness, Avery, 50, 447.1 ; Brinoll, motor driven, 50, 92/1 ; Brinoll, small, 50, 312/1 ; Duroskop, 50, 24G.4, 369/1, 627/1 ; for internal cylinder walls, 50, 369.1 ; Horbort pendulum, 50, 447.4 ; Herbert pendulum, report by Ctteo. of Franklin Institute, 50, 754/1 ; Nikolaev’s, 50, 245/1; Rockwell, 50, 246.4 ; Vickers’ diamond pyramid, 50, 312/1.

multi-lever, Tinius Olson, 50, 627/1. reverse-bend, Warner, 50, 93/1. sheet, 50, 559/1.spring, Klasticomotcr, 50, 93/1, 490/1. tensile, for wiros, improvement, 50,

42/1 ; largo, 50, 369/1 ; stages in development, 50, 245.4.

Tensometer, 50, 754.1. torsion, 50, 027/1.20,000 lb. vertical single lever, 50,

490.4.universal, large, 50, 92/1; self-indicat

ing, 50, 027/1. wear, for lacquers and other finishes,

50, 079.4.Testing of—

Aircraft structural members, dynamic, 50, 753.4.

Bearing alloys, 50, 490.4, 774.4. Bearings, 50, 762.1.Castings, 48, 273 ( Paper and General

D iscussion ), 50, 313/1.Duralumin, boams, 50, 313/1.Pistons, 50, 369.4.Sheet, 50, 446/1 ; thin, 50, 559/1,

560/1; thin light metal, influence of shape of tensile tost specimens, 50, 679/1.

Testing, methods of— Testing of—

Welds, 50, 91.4, 243.1, 490.4, 560/1, 766/1; destructivo and non-destructivo methods, 50, 751.4 ; nondestructive, 50, 91.4, 446.1, 679/1.

Test-piece, soparatoly-cast V . cast-on, 48, 276, 280, 288, 290, 291, 292, 294, 295,297, 304, 305, 306, 307, 308.

Textile mills, corrosion in, 50, 303/1.Thallium,

allotropie transformation, moclmnism, 50, 615/1.

anodic polarization in aqueous soins., 50, 610/1.

atomic weight, 50, 3.4, 66.-1. bibliography, pamphlet, 50, 137/1. boiling point at atm. pressure, 50, 736.1. diffusion in load, 50, 723.4. dissolution by acids, 50, 26/1. electrical resistance, at low temps., 50,

593/1 ; chango under hydrostatic pressure, 50, 422.4.

estimation, argontomotric, 50, 555.1 ; by hypoiodito method, 50, 555-4 ; vol., 50, 555.1.

extrusion pressure, minimum, 48, 51. films, photoolect. properties, 50, 454/1. fluidity, pressure of, 48, 53. history, pamphlot, 50, 137.4. isotopie constitution, 50, 66.4. markets and prices, pamphlot, 50, 137.1. photoelectric properties of films, 50,454.4. production, pamphlet, 50, 137.4. properties, pamphlet, 50, 137.1. uses, 50, 137/1, 569/1.

Thallium amalgams, freo energies of formation and hoat of formation, 50, 21/1.

Thallium-antimony alloys, magnetic susceptibility, 50, 354.4.

Thallium-cadmium alloys, magnetic sus- ceptibUity, 50, 354.4.

Thallium-lanthanum alloys, constitution, 50, 153/1.

Thallium-lead alloys, boiling point curves, 50, 736.4. superconductivity, 50, 604/1. thermal conductivity at low temps., 50,

474/1.Thallium-sodium alloys, NaTl, lattice

structure, 50, 363.4.Thallium-tin alloys, magnetic susceptibil-

ity, 50, 354.4.Thermal analysis, now method, 50, 224.1.Thermal conductivity,

and electrical conductivity, constant ratio, 50, 598.1.

applications of data on, 50, 533/1. constant ratio between elect, conduct

ivity and, 50, 217/1. determination, now method, 50, 293/1 ;

on cylinders, 50, 533/1. Thermal conductivity of—

Aluminium, 50, 10/1, 425/1 ; at high temps., 50, 4/1.

Aluminium alloys, 50, 726/1. Aluminium-copper alloys, 50, 10/1. Aluminium-magnésium alloys, 50, 10/1. Aluminium-silicon alloys, 50, 10/1.

Subject Index 875Thermal conductivity of—

Bismuth, effect of transverso magnetic fields, 50, 721/1.

Brass (70 : 30), at high temps., 50, 4/1. Cadmium at high temps., 50, 4*4 ; single

crystals, 50, CD6/1.Copper-aluminium alloys, 48, 37. Copper-arsenic alloys, 48, 37. Copper-iron alloys, 48, 37.Copper-nickel alloys, 48, 37. Copper-phosphorus alloys, 48, 37.Indium at low temps., 50, 466/1. K.S.-Seewasser, 50, 10/1.Lead-thallium alloys at low temps., 50,

474.1.Magnesium, 50, 10.4.Magnesium alloys, 50, 726/1, 732/1. Magnesium-aluminium-silicon alloys,

50, 10/1.Magnesium-cadmium alloys, 50, 10/1. Magnesium-cerium alloys, 50, 10/1. Magnesium-copper alloys, 50, 10/1. Magnesium-manganese alloys, 50, 10*1. Magnesium-silicon alloys, 50, 10.4. Magnesium-zinc alloys, 50, 10/1. Mercury, single crystals, 50, 595/1. Non-ferrous alloys, 48, 37 (Paper). Platinoid, at high temps., 50, 4/1.Pure metals and alloys, at high temps.,

50, 4.1, 422/4.Silver, at high temps., 50, 4.4.Wire and ribbon, measurement, appar

atus, 50, 557/1.“ Y ” alloy, 50, 10/1.Zinc, at high temps., 50, 4.4 ; single

crystals, 50, 596/4.Thermal diffusivity, determination, pre

cision method, 50, 292/4.Thermal diffusivity of—

Nickel, 50, 595.4.Thermal electromotive force of—

Magnesium single crystals, 50, 212.4. Tantalum, 50, 420/1.

Thermal expansion. Seo Expa)ision.Thermal treatment. See UeaUtreatment.Thermionic emission from a plane oloc-

trode, 50, 220.1.Thermionic properties of—

Cobalt, 50, 210A .Palladium, 50, 212/1.

Thermocouples (seo also Pyrometers), calibration, simple method, 50, 175-4. comparison, 50, 175/1. copper-Constantan, calibration below

0° C., 50, 561/1. elements, construction by olectrodeposi-

tion, 50, 561^4. for rapid measurement of temperatures of

small region, 50, 628-4. noble metal, for high temps., 50,

628/1.of longitudinally and transversely mag

netized wires, 50, 73A , precious metal, causes of destruction,

50, 561/1. reproducibility of data, 50, 94/1. tellurium-bismuth vacuum radiation, 50,

561/1.temperature readings by, in magnetic

fields, may bo misleading, 50, 345/1,

Thermocouples, tungsten-molybdenum, manuf. and use,

50, 175.4, 313/1. welding of wires, oxy.acetylene, 50, 54/1. wires, nickel-coppor and nickel-chrom-

ium, caro necessary in working and annealing, 50, 93.4 ; platinum metal, effect of impurities, 50, 94.4 ; thermoelectric properties, 50, 94.4.

Thermoelectric effect in—Gold-silver alloys, 50, 474.4.

Thermoelectric force produced by magnetic field, 50, 72/1.

Thermoelectric force o f—Copper-iron alloys down to very low

temps., 50, 422.1.Gold alloys down to very low temps., 50,

422.1.Lead, at liquid holium temps., 50, 339.4 ;

down to tomp. of liquid helium, 50, 418/4 .

Platinum down to very low temps., 50,422.1.

Silver-gold alloys down to vory low tomps., 50, 422.4.

Standard silver down to very low temps., 50, 422/1.

Tin, down to temp, of liquid helium, 50, 339/1, 418-4.

Thermoelectric power of—Bismuth single crystals near molting

point, 50, 657/1.Copper-nickel alloys, variation with

temp., 50, 664/1.Hydrogenized alloys, 50, 542/4.Mercury, single crystals, 50, 595/1. Molybdenum, 50, 724/1.Nickel, variation with temp., 50, 664.4. Nickel-copper alloys, variation with

temp., 50, 664/1.Tantalum, 50, 724.4.Tungsten, 50, 724.1.

Thermoelectric properties of— Copper-cadmium alloys, 50, 152/1. Ferromagnetic materials, 50, 228/1.

Thermometers. Soo Laboratory apparatus.Thermostats. Soo Laboratory apparatus.Thomson coefficient in zinc singlo crystals

(spectroscopically pure), 50, 3.4.Thorium,

bibliography, pamphlet, 50, 137.4. electrical resistance for temps, below 90°

K., 50, 726.4. electrolytic production, 50, 636*4. evaporation from tungsten surfaces, 50,

724A.history, pamphlet, 50, 137/1. occurrence, pamphlet, 50, 137*4. properties, pamphlet, 50, 137/1. uses, 50, 569/1.

Tin,action of beer, 50, 609*4. action of coffee, 50, 740*4, action of tea, 50, 740/4. allotropy, 50, 213/1.atomic heat, 50, 467A ; noar zero abs.,

50, 530/4. castability, 50, 329/1. colouring of foils, 50, 192/4. compression fluidity, 48, 48, 56.

876 Subject IndexTin,

consumption, 50, 3814 ; in U.S.A., 50, 7194.

corrosion, 50, 5444, 7 4 04 ; by citric acid, 50, 1014 ; by citric acid solns., effect o f H-ion concn., 50, 204 ; by hydrochloric acid, 50, 4344 ; by inorganic acids, 50, 0084 ; by phosphoric acid, 50, 4344 ; by sea-water, 48, 109 ; by sulphuric acid, 50, 4344 ; by vinegar, 50, 6074.

cry, 50, 4204, 4004, 7244. crystallization, investigation, 50, 1494. deposition, 50, 1784, 0304, 7004 ; on

cast-iron pistons, 50, 5324, G334, 7604 ; pamphlet, 50, 3354.

detection of antimony, 50, 0184. detection of arsenic, 50, 0184. diffusion, in lead, 50, 7234 ; into iron,

50, 224, 3524. dissolution, non-mctallic film remaining

after, 50, 704. drosses, detn. of tin, 50, 1704. estimation, gravimetric, by moans of

thermobalance, 50, 2414 ; in alloys with high copper content, rapid method, 50, 021/1 ; in brasses and bronzes, gravimetric, 50, 2414 ; in ferrotungsten and tungsten ores, 50, 0704 ; in lead alloys, rapid method of dissolving alloys preparatory to, 50, 0704 ; in steel, 50, 90/1 ; in tin drosses, 50, 170/1 ; in tinplate, 50, 904 ; in white metals, vol., 50, 90/1, 4444, 5554.

extrusion, power consumption, 50, 584. extrusion pressure, minimum, 48, 51. films, olectrodoposition, 50, 505/1 ; regis

tration of cathode rays, 50, 2924. flow-pressure, at low temps., 50, 2914. fluidity, pressure of, 48, 53. foil, colouring, 50, 1924 ; manuf. and

uses, 50, 1854 ; relative advantages of aluminium and, as cheese wrapping, 50, 006/1.

fusible plugs, failure, 50, 092/1; studv of 100, 50, 426/1.

indentation fluidity, 48, 49. mining in Saxony, book, 50, 2814. pest, 50, 5964.production, statistics, 50, 3814. recovery, from boll bronze, 50, 519/1,

7804 ; from tinplate scrap, 50, 277/1, 401/1, 5214.

refining, electrolytic, 50, 3184. separation, from tantalum and niobium,

50, 3664 ; from zinc, nickol and man- gancso by hydrogen sulphide, 50, 6744.

single crystals, eloct. resistance at temps.below 90° K ., 50, 7264.

slimes, rccovory of gold and silver, 50, 520/1.

specific heat (pure, tetragonal), 50, 4784. statistics, book, 50, 2804. superconducting, behaviour under incid

ence o f slow-moving electrons, 50, 4674.

superconductivity, 50, 4 1 8 4 ; at high frequencies, 50, 2174 ; with respect to a.c., 50, 293/1.

Tin,supercooling, 50, 5304 ; and formation

o f nuclei, 50, 1484. thermoelectric force down to temp, of

liquid helium, 50, 3394, 4184. titration with potassium chlorate (di

valent), 50, 6764. transformation, 50, 596/1 ; at high pres

sures, method for detection, 50, 4074. twinning, 50,420/1 ; mechanical, 50,290/1. wire, elastic extension under longitudinal

stress, 50, 704.Tin alloys (see also Babbitt metals, Bearing

metals, Pewter, Solders, White metals,&c.),

bearings, comparative tests with lead- base alloys, 50, 7344 ; mech, properties at different temps., 50, 429/1 ; properties, 50, 351/1.

corrosion, 50, 7404. for die-casting, 50, 323/1. recrystallization of solid solutions, 50,

0154. uses, 50, 1844.

Tin-antimony alloys, {3-solid solution, crystal structure, 50,

224. constitution, 50, 224. die-casting gas-meter valves, 50, 2014. gas-meter valves, die-casting, 50, 2014. magnetic susceptibility, 50, 3544.SnSb, existence, 50, 3544.

Tin-antimony-copper alloys (see also Pewter),

constitution, 50, 002/i. Tin-bismuth alloys, solid solutions, 50,

425/1. Tin-brasses,

physical properties, 50, 5394. surface-condensers, construction, 50,

090/1. Tin-cadmium alloys, oquilib. diagr., 50,

2134.Tin-copper alloys (see also Bronzes)t

a-sohd solution, solidification, 50, 1594. corrosion, potential measurements and

dissoln. tests, 50, 544/1. density, 50, 4264. effect of silicon, 50, 661/1. eutectoid, tempering and annealing, 50,

2564.eutectoid change, mechanism, 50, 2244. hardness, 50, 4264.

Tin-copper-lead alloys, miscibility gap, 50, 164.

Tin-copper-zinc alloys, constitution, 50, 774. creep, effect of rccrystn. temp, and

grain-sizo, 50, 4324, 6654.Tin-gold alloys, crystal structure, 50, 36/1.Tin-iron alloys, constitution, 50, 22/1,

3524.Tin-lanthanum alloys, constitution, 50,

1534.Tin-lead alloys (see also Solders),

constitution, 49, 267 (Paper). equilibrium diagram, 49, 281. eutectic, compn., 49, 282, 285. foil, colouring, 50, 1924. production from slags, 50, 2654.

Subject Index 877Tin-lead-antimony alloys,

microstructure, 50, 78-4. scrap, treatment, 50, 521A .

Tin-lead-copper-antimony alloys, anti-friction, effect o f small amts. of

aluminium, 50, 470.4 ; hardness, 50, 476/1.

Tin-nickel-aluminium alloys, aluminium- rich, constitution, 50, 347.4.

Tin-platinum alloys, specific heat, 50,478/1.Tin-silver alloys,

constitution, X -ray study, 50, 35.4. crystal structure, 50, 35.1. properties, 50, 470/1.

Tin-sodium alloys, X -ray study, 50,431.4.

Tin-strontium alloys, properties, 50, 21 A .Tin sulphides, thermochemistry, 50, 001.4.Tin-thallium alloys, magnetic susceptibil

ity, 50, 354/1.Tinned iron, corrosion, 50, 544.4.Tinning,

book, 50, 60/1. electro-, 50, 178.1. galvanic, new process, 50, 31 A . hot-, 50, 235/1. with tin paint, 50, 235.1. without heat, 50, 2354.

Tinplate,comparison of English, Gorman, and

Norwegian samples, 50, 3024. containers, mass prodn., 50, 7804. corrosion, 50, 1614 ; American and

British investigations, 50, 0074 ; by dilute acid soins., 50, 4344 ; by foods, 50, 3024 ; by foods, generation of hydrogen, 50, 5454 ; by foods, rôle of oxygen, 50, 435/1 ; by fruits, 50, 204 ; by green vegetables, 50, 204 ; by milk, 50, 3024 ; phenomena, 50.350.1.

defects, 50, 0114. detinning, 50, 277.4, 401-1, 5214. estimation of tin, 50, 904. lacquering o f food containers, 50, 4394. manufacture, appn. of town’s gas, 50,

5124 ; effect of various factors on consumption of tin, 50, 4384.

mottled, 50, 3004, 4384, 743/1. porosity of coatings, dotn., 50, 3504,

5514.quality used in canneries, 50, 3024. scrap, treatment, 50, 4014. soldering, 50, 780.4. testing, 50, 7814. with rustless base, 50, 5094. works, scientific control, 50, 2074 ;

50, 445.4.Titanium,

anodic polarization, chem. nature of oxide layers, 50, 2894.

deposition on iron, 50, 551/1. electrical resistance, at low temps., 50,

5934 ; offect of temp., 50, 8.1. estimation, as dioxide by guanidine car

bonate in tartrate soins., 50, 3114; as phosphate, 50, 444.4 ; colorimetric, by Weller’s method, 50, 0744 ; gravimetric, 50, 5554, 074.4 ; gravimetric, by means of thermobalance, 50, 2414.

Titanium,separation, gravimotric, 50, 555.4 ; in

alloys, 50, 0744. uses, 50, 3814.

Titanium amalgams, preparation, 50, 2974. properties, 50, 2974.

Titanium carbide, superconductivity, 50, 3524.

Titanium-copper alloys, age-hardening, pamphlet, 50, 2084. constitution, 50, 77/1.

Titanium nitride, experiments with, 50, 3414. superconductivity, 50, 3524.

Titration. See Analysis.. Tombac,

tubes, uso in water services, 50, 5084. wire-cloth, 50, 455.4.

Tombasil, properties, 50, 539.1. uses, 50, 539.1.

Toncan iron, tin-plated, 50, 5094.Tools,

design, book, 50, 5254. machine. Soo Machine tools. resistance of metals to penetration by,

50, 584.small, scicntific purchase, 50, 2014. vee, grinding, 50, 2024.

Tornesit, 50, 304.Torsion, effect on density, dimensions

and olect. resistance of metals, 50,059.4.

Torsion testing. See Testing. Transformations,

detection, in cryst. substances at high pressures, 50, 4674.

of solid phases, 50, 3064.Transport numbers of metals in mercury,

50, 804.Treasurer, report, 48, 13.Trib-metal, 50, 7394.Tubes,

cold-drawn, calculation of residual tensions, 50, 3274, 3874 ; structure, 50, 1914.

condenser. See Condenser tubes. corrosion-resistant linings, 50, 85.4. internal surfaces, instrument for inspec

tion, 50, 0794. seamless, of high m.p. metals, manuf.,

50, 5734. shaped, prodn., 50, 1174. subject to vibration, importance of design

of supports and fittings, 50, 2784. thin-walled, manuf., 50, 3874, 7024.

Tungsten,absorption of carbon monoxide, 50, 4704. absorption of nitrogen, 50, 4704. action of iodine, 50, 084. a - and P-, electrolytic prodn., 50, 7014. book, 50, 5884, 7814. degassing, 50, 4704. deposition, 50, 381/1 ; from aqueous

soins., 50, 994. diffraction patterns, 50, 7474. electrical resistance, change under hydro

static pressure, 50, 4224 ; of films, 50, 5904.

878 Subject IndexTungsten,

estimation, colorimctric, in minute amts., 50, 242.4.

filaments, heated in vacuo, burning-out, 50, 342-4, 658-4 ; micro-examination, 50, 32/1; prodn., 50, 509/1; roactions at surface, 50, 341/1.

films, elect, resistance, 50, 596-1. incandescent, departures from Lambort’s

cosine law, 50, 3/1. lattice parameters, 50, 362/1. metallography, 50, 32.4. occurrence, 50, 290/1. oxide-coated, deflection o f electrons, 50,

755/1; electrolytic phenomena, 50, 70/1 ; tost-pieccs, preparation, 50, 755/i.

photoelectric threshold, dotn. by Fowler’s method, 50, 214 A .

powder, grain-sizo, measurement, 50, 32/1.

preparation, 50, 290/1. properties, 50, 290/1. thermoelectric power, 50, 724/1. thoriated, course of activation, 50, 23/1;

omission of positivo ions, 50, 219-4 ; ovapn. and migration of thorium, 50, 724.4 ; reactions at surface, 50, 341/1.

tubes, manuf., 50, 573/1. uses, 50, 381.1, 569/1. wires, containing uranium dioxide, omis

sion o f positive ions, 50, 219/1; for uso in hotvos torsion balance, effect o f hoat-troatment, 50, 342.1 ; grain- growth and recovery, X -ray evidence, 50, 36/1 ; manuf., book, 50, 588/1 ; micro-oxamination, 50, 32/1.

Tungsten alloys, for drilling, prodn., 50, 735.1 ; proper

ties, 734.4, 735.4.Tungsten carbide (seo also Carboloy, W idia ,

&c.),cemented, action of cementing material,

50, 23/1 ; compared with cemented tantalum carbide cutting tools, 50, 81/1 ; cutting tests on steel, 50, 576.4 ; cutting tools, economy, 50, 119-4; lathe tools, cutting tests, 50, 119.4.

cutting tools, advantages, 50, 576.4 ; boring with, 50, 577.4, 768/1 ; cutting speeds, 50, 575-4 ; diamond lapping, 50, 387.4 ; examples, 50, 576.1 ; ex periences at U.S. Naval air base. 50,576.4 ; experiences with, 50, 768.4 ; extending field, 50, 262/1 ; grinding, 50, 705.4 ; lapping, 50, 576/1, 705.4 ; molybdenum cushions for tips, 50,576.4 ; savings effocted by use, 50, 576/1 ; use in automobile plant, 50,576.4.

electrical conductivity, 50, 419/1. formation, 50, 676.4. sand-blast jet, 50, 52A . separation of \VC and \V2C, 50, 676/1. use in glass machinery, 50, 693.4.

Tungsten carbide-cobalt cutting tools, toolbar for uso with, 50, 262-4.

Tungsten-carbon system, constitution, 50, 23-4.

Tungsten-cobalt alloys, age-hardening, 50, 601/1. constitution, 50, 601.4.

Tungsten-cobalt-chromium alloys. SooStcllitc.

Tungsten-iron alloys, cc-y loop, eompn. limits, 50, 227.4.

Tungsten-iron-carbon alloys, constitution, 50, 23/1.

Tungsten-nickel-iron alloys, hot structural liardoning, 50, 430/1.

Tungsten-steeis, lattice distortion and hardness, 50, 165-1.

Tungum,properties, 50, 539.1. uses, 50, 539/1.

Turbine blades, alloys for, 50, 255/1. erosion, 50, 230.4 ; ofFicienoj' offect on

radial flow turbine, 50, 739/1. steam, investigation of materials to

roduco wear, 50, 185/1.Turbines, scaling, 50, 357.1.Twinning, 48, 228, 245.

mechanical, 50, 290.4.Twinning of—

Antimony crystals, 50, 529/1.Bismuth crystals, 50, 529-4.

Type metals, ancient, analyses, 50, 764/1. investigation,' 50, 78.4. production from scrap, 50, 127/1.

Ulco metal, 50, 540.1. Ultralumin,

melting point, 50, 727/1. properties, 50, 727.4. use for jewellery, 50, 686-4.

Union of Socialist Soviet Republics, electrochemical industry, book, 50, 649/1. industry and education, book, 50, 403.1. Non-Ferrous and Noble Metals Trust,

problems of priority for scientific and research worlc, 50, 203/1.

non-ferrous metals, report of fourth conforonco, 50, 651/1.

non-ferrous metals industry, capital expenditure in, 50, 779.1 ; dogroo of fulfilment of indust, plan during first 9 months o f 1931, 50, 647.1 ; development plan, 50, 398/1 ; estimated prodn. 1933-1937, 50, 202.1 ; geographical distribution, 50, 202.1 ;main lines o f standardization, 50, 203/1 ; objectives, 50, 202/1 ; of Ural, “ disgraceful results ” during first-half year 1931, 50, 399.4;prodn. programme for 1932, 50, 400.1 ; real and fictitious lowering o f prodn. costs, 50, 648.4 ; review of progress, 50, 779-4.

Zvetinetzoloto, work on standardization, 50, 779.4.

United States of America, Aluminum Company of America, history,

50, 519-1. American Society for Testing Materials,

projects and work, report of cttco., 50, 290/1 ; research work, 50, 401*4.

Subject Index 879United States of America,

Bureau of Mines, bibliography of metallurgical work, 50, 133/1.

Bureau of Standards, report, 50, 634. industrial research laboratories, rofcrenco

book, 50, 334/1. mineral resources, 50, 403.1, 404.1 ;

reports, 50, 134/1, 135/1.National Electric Light Association,

report of underground, systems cttee., 50, 25/4.

Rensselaer Polytechnic Institute, description of laboratories, 50, 783.4.

Universities, yoar-books, 50, 4584.Uranium,

electrolytic production, 50, G3G4.-y , docay cooff., 50, 290/1 ; half-valuo

period, 50, 290/1. mineral resources of U.S.A., pamphlet,

50, 4044. relation to radium, 50, 704. titration, olectromotric, with eerie sul

phate, 50, 904.Uranium amalgams, preparation, 50,

297/1 ; proportion, 50, 297/1.

Vacuum, melting in. Seo Melting.Valence, application of quantum theory,

50, G174.Valves, wear, 50, 7394.Vanadium,

booklet, 50, 7174.estimation, colorimetric, with phospho-

tungstic acid, 50, 5504 ; gravimetric, uso of 8-hydroxyquinoline, strychnine and brucine, 50, 3 1 1 4 ; vol., 50, 4444.

extraction, 50, 1844. mineral resources, 50, 5G94 ; of U.S.A.,

pamphlet, 50, 404/1. minerals, 50, 184/1. occurrence, 50, 5694. separation, from arsonic, uso of 8-hydr

oxyquinoline, strychnine, brucine, and quinolino, 50, 0774 ; from chromium, 50, 311/1.

uses, 50, 1844, 5G94.Vanadium amalgams,

preparation, 50, 297/1. properties, 50, 2974.

Vanadium-iron-carbon alloys, constitution, 50, GOG4, 735/1.

Vanadium-iron-oxygen system, constitution, 50, 7354.

Vapour pressure of—Lithium, 50, 4184'.

Varnishes,aircraft, pamphlet, 50, 634. developments, 50, 4394. progress in 1931, 50, 3G1/1. protection of aircraft materials, 50, 23G4.

Varnishing of copper, 50, 4394.Vedal process, 50, 1G24, 2794.Veining, or sub-boundary structures, 50,

G144.Vibration strength of metals. See Fatigue.Vicrometal, use for valve seatings, 50,

G924.Vinegar equipment, corrosion, 50, 5474.

Viscosity of—Silver, 50, 804.Silver-copper alloys, 50, 80/1.

V.L.W. alloys, 50, 2234.Volume changes (soo also Expansion,

and Shrinkage), during solidification, 50, 7704 ; motliod

of dotn., 50, 263/1.Volume changes in—

Cobalt-carbon alloys on solidification, 50, 2264.

Manganese on solidification, 50, 2264, 4754.

Manganese alloys during solidification, 50, 475/1.

Manganese-carbon alloys, on solidification, 50, 2264.

Waste,from metal working industries, treat

ment, 50, 2784, 2794. reduction of losses by, 50. 4014.

Water pipe. See P ipes and under names of metals and alloys.

Waukesha metal, corrosion by milk, 50, 3024.

Wear (seo also Abrasion), study, 50, 243/1. theory, 50, 7514.

Wear testing machines. Soo Testing machines.

Wear tests. Seo Testing.Welders,

educational training, 50, 1144, 2594, 7604.

instruction, at British Army vocational training centro, 50, G984.

Welding,acetylene, causes of ignition, 50, 6994. acetylene apparatus, testing safety, 50,

0994 ; use o f higher pressure, report of Brit. Acotyleno Assoc., 50, 5724.

Arcatom process, 50, 554, 2584, 3854, 6994.

Arcogen process, 50, 544, 554, 3854. atomic hydrogen, progress, 50, 3264,

6994.autogenous, 50, 113/1, 6994, 766/1.Blau system, 50, 2584. blowpipes, appns., 50, 1154; multi

flame, 50, 1154, 6994. books, 50, 4034, 4574, 719/1. bronze, 50, 1134. carbon-arc, 50, 3854, 4594. cleansing flux, uso on reverse side of

weld, 50, 114.1. controlled atmospheres, 50, 456-4. electric, Arcatom process, 50, 554, 2854,

3854, 6994 ; Areogon process, 50, 544, 55/1, 385/1; equipment, 50, 1154 ; handbook, 50, 2824 ; potassium flux, 50, 2584 ; practical hints, 50, 3854.

electric arc, 50, 3254 ; Arcatom process, 50, 554, 2584 , 3854 , 6 9 94 ; atomic hydrogen process, 50, 2584 ; book, 50, 282/1, 4584, 6514 ; electrodes, 50, 3254 ; installations in Gt. Britain. 50, 554 ; present position, 50, 3854 :

880 Subject IndexWelding,

use in naval construction, 50, 115.4 ; with a.c., 50, 699.-1.

electric resistance, data, 50, 258.4; essential considerations when selecting machines, 50, 116.4; from metallo- grapliic point of viow, 50, 115.4; fundamentals, 50, 1164 ; method and apparatus, 50, 544 ; possibilities, 50, 3854 ; review, 50, 3854.

electrodes, bare wiro and flux-coated, comparison, 50, 554.

expansion and contraction during, control, 50, 7004 .

facts and figures, 50, 2584. forms, use o f copper, 50, 544. forward and backward, comparison, 50,

7004.gas-, phases, 50, 2584.Gasol system, 50, 2584. in Switzerland, 50, 7004. industry, growth, 50, 3854. overhead, 50, 7004.oxy-acetylene, advances in U.S.A., 50,

2584 ; appn. to manuf. o f chem. engineering plant, 50, 2584, 6994 ; blowpipes, testing for low-pressure ncetylono, 50, 5724 ; books, 50, 2824, 4054 , 4134 (review), 6494 ; effect of water vapour in acotyleno, 50, 5014 ; elimination of personal element, 50, 3 8 5 4 ; flame. 50, 1144, 6 9 94 ; in brewery, 50, 3844 ; in chem. industry, 50, 6 9 8 4 ; indust, appns., 50, 1154; Keel multi-flame blowpipe, 50, 3844 ; phases, 50, 2584 ; report of cttoo. of Internat. Acet. Assoc., 50, 1354 ; storago of carbide of calcium, 50, 3854 ; temp, o f flame, 50, 5014 ; with auxiliary reducing flame, 50, 1144.

oxy-benzol, 50, 2584. oxy-Pintsch system, 50, 2584. petrol-oxygen, 50, 3254. practical hints, 50, 7004. preheating arrangements, 50, 1144. progress, 50, 1134. rods, for brass and bronze, 50, 55.4. Schelgas system, 50, 258.1. speeds, 50, 7004. spot, of sheet, 50, 1154. standard symbols, DIN , 50, 7004. symposium, book, 50, 1324. technology in U.S.A., 50, 544.Urgas system, 50, 2584.

Welding machines, atomic hydrogen, 50, 554. electric, 50, 1154. electric arc, 50, 554 ; a.c., 50, 3204. electric resistance, 50, 3854. electric spot, 50, 1154, 3264. spot, heavy-duty, 50, 1154.

Welding of—Aircraft parts, oxy-aeetylone, 50, 1804 ;

pamphlet, 50, 4594.Alloys, 50, 11 44 ; oxy-acetylene, 50,

544.Aluminium, 50, 5004, 0904 ; aeroplane

tanks, oxy-acetylene, 50, 1124 ; autogenous, 50, 53/1, 257/1; brewery plant, oxy-acetylene, 50, 0974 ; elect.,

Welding of—50, 501.4 : elect., recommended practice of Aluminum Co. of America, 50, 1864 ; elect., with carbon electrodes, 50, 326.4 ; elect, arc, 50, 500/1, 6964, 7 6 5 4 ; elect, resistance, 50, 11 04 ; fluxes, 50, 32 44 ; fluxes, compn., properties and appn., 50, 1864 ; furniture, 50, 6974 ; gas-fusion, 50, 1104 ; in U.S.A., 50, 54.4 ; jugs, oxy-acetylene, 50, 5004 ; lined vessels, 50, 5004 : oil storage tanks and apparatus, 50, 1864 ; oxy-acetylene, 50,1104 ; oxy-acetylene, practical hints, 50, 1S74 ;‘ pipes, 50, 3834 ; repairs by, 50, 7664 ; roofing, gutters, &c., 50, 5004 ; sheet, 50, 1104 ; sheet by carbon arc, 50, 5004 ; spot-, 50, 7654; tank trucks, 50, 5004, 7654.

Aluminium alloys, 50, 4964, 5004; autogenous, 50, 2574 ; elect, resistance, 50, 11 14 ; oxy-acetylene, 50,383.4 ; oxy-acetylene, practical hints, 50, 1874 ; precautions, 50, 534, 544.

Bimetal, 50, 0984.Brass, 50, 3844, 5014 ; fine wire, oxy-

aeetylone, 50, 0974 ; oxy-acetylene, practical hints, 50, 1874 ; oxy-acetylene, 50, 112.4.

Bronze, 50, 5014 ; extruded sections, 50, 0974.

Chromium alloys, 50, 113.4. Chromium-nickel alloys, 50, 544.Copper, 50, 5014 ; arc-, experiences, 50,

2574 ; autogenous, 50, 2574, 0974 ; boiling pans, 50, 1124; breweryplant, oxy-acotyleno, 50, 0974 ;bronze-, in acetic acid plant, 50, 188/1; chem. apparatus, 50, 2574 ; gas-, effect, of small addns. in wolding rods, 50, 18 74 ; loco, firoboxes, 50, 2574, 097/1; loco, firoboxes, oxy-acetylene, 50, 3834, 3844, 5004 ; loco, firebox plates, autogenous, 50, 5004 ; loco.- tube plates and fireboxes, oxy-acotyleno, 50, 1124 ; oxy-acetylene, 50, 112/1, 459/1, 5 0 1 4 ; oxy-acetylono, practical hints, 50, 1874 ; practice, re* viow, 50, 1124; Promag process, 50, 0974 ; refinery stills, 50, 544, 3834, 7 0 5 4 ; sheet, 50, 188/1; shoot, oxy- aeetylone, 50, 7654 ; very thin sheet articles, 50, 383/1 ; wire, butt-,machine, 50, 5014.

Corrosion-resistant alloys, 50, 1134.Duralumin, 50, 1124, 6904, 6 9 7 4 ; in

aircraft, research at U.S. Naval Aircraft Factory, 50, 1864.

Elektron, 50, 15 54 ; crankcases, 50,698.1 ; danger, 50, 534.

Everdur, 50, 5724 ; largo vessels, 50, 1124.

Galvanized iron and steel, 50, 7654. Galvanized sheet, 50, 1884.Lead, 50, 1134, 3 8 44 ; autogenous, 50,

6974 ; autogenous, history, 50, 1134, 6984 ; book, 50, 589/1, 6514 ; oxy- acetylene, 50, 544.

Lead alloys, autogenous, history, 50, 1134, 0984.

Subject Index 881Welding of—

Magnesium alloys, 50, 490/1 ; fluxes, 50, 188/1 ; precautions, 50, 53/1, 54/1.

Monel metal, 50, 19/1, 113.1, 257.1, 384.4, 705/1 ; autogenous, 50, 188/1 ; autogenous, in construction of chem. apparatus, 50, 257/1 ; elect., 50, 188.1 ; in apparatus construction, 50, 54/1 ; oxy-acotylono, 50, 113/1; oxy-acotylono, practical hints, 50, 187/1 ; practical notes, 50, 698/1.

Nickel, 50, 257/1, 384/1 ; practical hints, 50, 188.4.

Nickel alloys, oxy-acotylono, 50, 188.1,698.4.

Nickel-brass, 50, 501.1, 765/1. Nickel-chromium alloys, 50, 384.1. PMG metal, 50, 1 1 2 . 1 . Silver-copper-nickel-zinc alloys, 50,

606/1.“ Stainless ” steel, 50, 113/1.Steel, electric, uso of aluminium in olec-

trodos, 50, 326.4.Thermocouple wires, oxy-acotyleno, 50,

54/1.Welds,

blowholes, 50, 700.4. butt-, stross distribution, 50, 174/1. endurance under alternating strosses, 50,

257/1. fatigue, 50, 313/1. fatigue strength, 50, 384/1. fillet, distribution of stress, 50, 698.4. frontal, strength, 50, 114.4. inspection, 50, 114.1. lap, strength, 50, 114/1. lateral, strength, 50, 114/1. pinholes, 50, 700/1.radiology, 50, 43.4, 93.4, 491A , 560A ;

uso o f y -rays, 50, 93.4, 447.4. resistance to repeated impact, 50,

257/1.stress distribution, 50, 384.4. testing, 50, 91/1, 243.4, 490.4, 560.1,

766/i ; non-destructive, 50, 91/1,446/1, 679/1.

White gold, for enamelling, 50, 16.4. losses, during magnetic purification of

filings, 50, 521A. production, 50, 539-1. treatment, 50, 539A.

White metals (see also Babbitt metals, Bear- ing allays, and undor names of constituent metals),

analysis, 50, 364.1.antifriction, prodn., 50, 580/1 ; require

ments and properties, 50, 179.4. ashes and residues containing metal

prills, treatment, 50, 521.4. bearing, moch. properties, 50, 101-1 ;

mech. properties at different temps., 50, 429.1.

casting of boarings (load-freo) by injection mothod, 50, 508-4.

coatings on mild steel surfaces, adhesion and fatigue, 50, 558/1.

estimation of arsenic, rapid, 50, 167A . estimation of tin, vol., 50, 90/1, 444/1,

555/1.VOL. L.

White metals, *fillings in rocapping winding ropes, 50,

691/1.linings for connecting rods, 50, 692.4.

Widia (soo also Tungsten carbide), cutting tests on chromo-nickel steel, 50,

576/1.cutting tips, soldering, 50, 262A . cutting tools, cutting speeds, 50, 262.4 ;

devolopmont, manuf. and capabilities, 50, 261/1.

manufacture, 50, 262/1. properties, 50, 2624. soldering, 50, 110/4. use in coal-mining industry, 50, 692/1.

Widmanstatten structure in— Aluminium-copper alloys, 50, 485/1. Aluminiuin-magnesium-silicon alloys,

50, 485/1.Wiedemann effect, relation to Barkhausen

effect, 50, 74/1.Wire (soo also Filaments),

buyer’ s guide, 50, 4074. cold-drawn, lattice distortion, 50, 191/1 ;

torsional fatiguo, 50, 1744. drawn, properties, 50, 574, 191.4. elastic extension under longitudinal

stross, 50, 704. electrical-resistance, lifo tests, 50, 298/1. fatigue testing, 50, 3134. fine, apparatus for measuring diam., 50,

6234.forming dies, 50, 7664. free transmission, endurance strength,

50, 2894, 6574. galvanizing. Soo Galvanizing. manufacture, &c., book, 50,7844 (review). overhead, freely-swinging, stresses, 50,

174.4.screen, manuf. and lifo, 50, 3824. strained, regions o f reversod magnetiza

tion, 50, 2174. telephone, spectrographic detection of

thefts, 50, 2794. tensile properties at low temps., 50,4314.

Wire-drawing, book, 50, 1394, 4094 (review), 7844

(review).distortion of wires on passing through

draw-plate, 49, 187 (Paper). force relations, 50, 2594. industry of Birmingham, 50, 702/1. power requirements, 50, 574, 1914 ;

factors involved, 50, 3864. pressure of fluidity, 48, 63. surface temperature of metal during,

measurement, 50, 7664. through rotating dies, 50, 1164. useful and lost work in, 48, 339.

Wire-drawing of—Brass, 50, 574.Constantan, 50, 473/1.

Working,mechanical, effect on state of solid sur

face, 50, 714. power and energy demands, 48, 337.

X-ray analysis (seo also Crystal structure), applications in metallurgy, 50, 2374.

4 K

882 Subject IndexX-ray.crystal structure. Seo Crystal struc

ture.X-ray spectrometers. Soo Laboratory a p

paratus.X-ray spectroscopy, application to metal

lurgy, 50, 3644.X-rays (soo also Radiology),

and structure of matter, book, 50, 5284 (tevicw).

book, 50, 5894. focussing, methods, 50, 2384. interference, ofïoct o f secondary struc

ture, 50, 6724.

** Y ” alloy. Seo Alum inium alloys. Yorcalbro, 50, 0904.

Zimbabwe ruins, metallurgical finds, 50, 5204.

Zinc,action of coffee, 50, 7404. action of tea, 50, 7404. analysis, book, 50, 594. anodic polarization in aqueous solns.,

50, 6104. atomic heat near zero abs., 50, 5304. bibliography, full, 50, 1484. boiling point at atm. pressure, 50, 7304. book, 50, 2084. castability, 50, 3294. casting, 50, 3314 ; of rods, 50, 5814. chromium-plating, 50, 994, 3714. coatings, as protection against corrosion-

fatigue, 50, 3144 ; flexibility, 50, 314 ; protective value, 50, 324 ; testing, chem. methods, 50, 3 0 4 ; seo also Galvanized iron and steel.

compression fluidity, 48, 48, 56. corrosion, by acids, 50, 480/1; by milk,

50, 3024 ; by soa-water, 48, 109; distribution, 50, 2324, 6684, 7414 ; effect of pn. iu oxygenated aqueous solns., 50, 3024 ; effect o f temp., 50, 2 6 4 ; influenco o f foreign motals on rate o f dissoln., 50, 7404 ; of shoot contg. 1% lead by acids, 50, 4354.

crystals, fault-like translation, 50, 3424.

deposition, anodes for, 50, 7604 ; book, 50, 604 ; cathodic, from aqueous soln. of zinc sulphate, polarization potential, 50, 6334 ; detn. o f zinc content of bath, 50, 5654 ; discoloration of deposits, 50, 5654 ; effect o f mercury in cyanide solns., 50, 994, 2494 ; (electro-) on steel, effect on endurance properties, 50, 4824, 6704 ; layout of small plant, 50, 1784; of chromium on sheet, 50, 5634 ; on aluminium and Duralumin, 50, 6694 ; tensions o f deposits, 50, 4514 ; testing of zinc salts, 50, 5654 ; throwing power of solns., 50, 474, 6824 (soo also Galvanizing).

deposits, compared witli cadmium deposits for protection of steel, 50, 4504 ; factors affecting Preeco test, 50, 481.4, .6704 ; on water-pipes, corrosion, 50,

Zinc,6674 ; rolativo value of cadmium and, as protoctivo coatings, 50, 4394.

diffusion, into (3-brass, 50, 4704 ; into iron, 50, 4704.

dissolution by acids, offoct of silvor, 50, 3574.

drawing, deep-, 50, 5044. electrical conductivity of single crystals,

50, 5964.electrical properties o f spectroscopically

puro single crystals, 50, 34 . electrical resistance, change under hydro

static prossuro, 50, 422.-1 ; for temps, below 90° K ., 50, 7264 ; of molten, 50, 1524.

electrode potential, 50, 5 0 4 ; o f single crystals, 50, 4524.

electrolytic production, comparison of methods, 50, 4524 ; influence of cobalt, 50, 3724, 7624 ; investigation of anodes, 50, 2514 ; principles, 50, 3724, 7614 ; rapid detn. of current efficiency in oioctrolysis o f zinc sulphate electrolyte, 50, 2524 ’

electrothermic, 5 0 /100 4 . endurance strength o f singlo crystals,

50, 4674.estimation, coating on stool, apparatus

for works, 50, 4444 ; in alloys, potentiomotric, 50, 5 5 6 4 ; in cadmium, rapid, 50, 6774 ; in copper-zino alloys, 50, 1684 ; (small amts.) in nickel, 50, 6774 ; Rinnmann’s greon test, 50, 6774 ; vol., 50, 5564.

extraction, oloctrotherinic, book, 50, 1394.

extrusion pressure, minimum, 48, 51. films, registration o f cathodo rays, 50,

2924.fluidity, pressure of, 48, 53. for galvanizing, suitability, 50, 7434. galvanized coatings. Seo Galvanizing, indentation fluidity, 48, 49. mechanical properties, full review, 50,

1484.melting, compn, of kettles for, 50, 5814. metallurgy, developments, 50, 5214. mineral resources, of California and

Oregon, U.S.A., 50, 1344 ; o f eastern states of U.S.A., 50, 1344 ; of Idaho and Washington, U.S.A., 50, 1344 ; of Nevada, U.S.A., 50, 1344, 5884 ; of U.S.A., 50, 1364, 5 8 9 4 ; o f Utah, U.S.A., 50, 1344.

molten, elect, resistance, 50, 1524. nickel-plating, 50, 994. painting, 50, 7434.physical properties, full review, 50,

1484.pigments, developments in uso, 50,

4394.plating, of rolled, 50, 994. poisoning and activation, 50, 5974. printing plates, prodn., 50, 1484, 2904,

3424 ; surface troatmont, 50, 2554. production by Coley process, Tunis

plant, 50, 4014. recovery from lead blast-furnace slags,

50, 2774.

Subject Index 883Zinc,

refined, effect o f small amts. of impurities on properties, 50, 342.-1.

refining, electrolytic, 50, 317.-1. rods, casting, 50, 581.4. rolling, effect o f temp, and impurities,

50, 701.4. rolling texture, 50, 3634. separation from copper, 50, 168.4. sheets, anistropy, 50, 420.1 ;, elastic

modulus, 50, 4204 ; rolled, Poisson’s ratio, 50, 4204.

single crystals, alternating torsional tests, 50, 4074 ; elect, conductivity, 50, 5964 ; (spectroscopically pure), elect, properties, 50, 34 ; electrodo potential, 50, 4524 ; hemispherical, crystal growth, 50, 6164 ; thermal conductivity, 50, 5964.

supercooling and formation of nuclei, 50, 1484.

thermal conductivity, at high temps., 50, 4 4 ; of singlo crystals, 50, 5964.

thermal expansion, 50, 7254.Thomson coefficient in singlo crystals

(spectroscopically pure), 50, 34. titration, potentiometric, with potassium

forrocyanido, 50," 2424 ; with forrocyanido, overlookod source of orror, 50, 2 4 2 4 ; with potassium ferro- cyanido, 50, 3114.

toxicity, 50, 6924. twinning, mechanical, 50, 2904. use, in automotivo industry, 50, 3224,

5694 ; in marine construction, 50, 1844.

wire, elastic extension under longitudinal stress, 50, 704.

Zinc alloys (soo also Eraydc), book, 50, 2084. casting, 50, 3314. chromium-plating, 50, 3714. constitution, full reviow, 50, 1484. die-cast, uses, 50, 524. die-casting, 50, 2674 ; high-quality,

uso o f higli-grado zinc essential, 50, 5814 ; recommended practice (American), 50, 7744.

die-castings, A.S.T.M. tentativo specifications, 50, 1084, 3234 ; heat-treatment, 50, 534 ; plating, 50, 994, 2484.

for die-casting, 50, 234 ; effect of variation of temp, on impact values, 50, 4774 ; new, properties, 50, 1584 ; properties, &e., full reviow, 50, 1484.

for high-temperature service, 50, 4034, 4324, 4774.

for low-temperature service, 50, 4034, 4324, 4774.

permanent moulds for, 50, 5814. rolled, bending qualities, relation of

crystal orientation, 50, 7354. use, in automotivo industry, 50, 3224,

5694.Zinc-aluminium alloys,

age-hardening (Al2Zn3 compn.), 50, 7274, 7284.

a-solid solution, solidification, 50, 1594.

Zinc-aluminium alloys,Al2Zn3, does it exist?, 50, 6154;

improvement, 50, 4724, 7284. boiling point curves, 50, 7364. equilibrium relations, 50, 2234. improvement, 50, 4724.

Zinc-antimony alloys, boiling point curves, 50, 7364. electrolysis of solid, 50, (>65.-1. magnetic susceptibility, 50, 3544.ZnSb, existenco, 50, 3544.

Zinc-bronzes,corrosion, 50, 3554. freezing temperature, 50, 2964. physical properties, 50, 5374.

Zinc-cadmium alloys,boiling point curves, 50, 7364. deposition, barrel, 50, 474. magnetic susceptibility, 50, 3544.

Zinc-cadmium-^copper alloys, deposition from cyanide baths, 50, 2474.

Zinc-cadmium-silver alloys, properties,50,. 4764.

Zinc-copper alloys (SCO also Brasses), a-solid solution, solidification, 50, 1594. analysis, 50, 1684.B-phase, transformations, X-ray study,

50, 1584. boiling point curves, 50, 7364. brazing solders, distillation phenomena,

50, 534, 5004. constitution, X -ray detn. of phase

boundaries, 50, 6724. corrosion, potential measurements and

dissolu, tests, 50, 544/1. corrosion-fatigue, influence of chem.

compn. and heat-troatment on resistance to, 49, 38.

creep, effect of rocrystn. temp, and grain-size, 50, 4324, 665.1.

creep resistance, 50, 5304. diffusion of solid, influence of temp, on

velocity, 50, 6624. magnetic susceptibility, effect of plastic

deformation, 50, 6604.Zinc-copper-aluminium alloys, constitu

tion, 50, 2254, 4264, 4274.Zinc-copper-nickel alloys. See N ickel-

brasses.Zinc-copper-tin alloys,

constitution, 50, 774. creep, effect of rocrystn. temp, and

grain-size, 50, 4324, 665.1.Zinc ferrite, formation, 50, 814.Zinc-lead alloys,

boiling point curves, 50, 736.1. eutectic, 50, 784.

Zinc-magnesium alloys, a-solid solution range, boundary, X-ray

detn., 50, 7324. boiling-point curves, 50, 7364. chemical properties, 50, 6044. electrical conductivity, 50, 104. equilibrium diagram, 50, 6044. heat-treatment, 50, 6044.Lorenz number, 50, 104. physical properties, 50, 6044. solid solutions, hom ogenized, tensile

tests, 50, 732/1. thermal conductivity, 50, 104.

884 Subject IndexZinc-mangauese alloys,

constitution, 50, 431.1 ; X -ray study, 50, 352.1.

pamphlet, 50, 459-1.Zinc-silver alloys,

P-phase, transformations, X -ray study, 50, 158/1.

corrosion, by acids, 50, 357.-1. properties, 50, 470.-1.

Zinc silver antimony alloys, constitution, 50, 430/1.

Zinc-silver-copper alloys, constitution, 50, 064/1. review o f recent investigations, 50,227/1.

Zircon. See Refractory materials.Zirconia. Soo Refractory materials.Zirconium,

anodic polarization, chom. nature of oxide layers, 50, 289/1.

Zirconium,p, crystal structure, 50, 440.1. markets and prices, pamphlot, 50, 140.4. mineral resources, 50, 140.1. minerals, pamphlet, 50, 140.-1. patents, pamphlot, 50, 110.-1. preparation, pamphlet, 50, 140.-1. producers and dealers, pamphlet, 50,

140/1.production, pamphlet, 50, 140.-1. properties, pamphlot, 50, 140/1. transformation point, 50, 70/1. uses, 50, 381.-1 ; pamphlet, 50, 140.-1.

Zirconium boride, superconductivity, 50,352,1.

Zirconium carbide, superconductivity, 50,352.4.

Zirconium nitride, superconductivity, 50, 352/1.

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