GENERAL INDEX TO

THE Q U A R T E R L Y J O U R N A L

AND

PROCEEDINGS OF THE GEOLOGICAL SOCIETY.

[The Fossils of which the names are printed in italics are figured.]

Abberley Hill, Permian breccias of, 464, 465.

Abbott, W. g. L., on Ossiferous Fis- sures in Shode Valley near Ight- barn, 171.

Additions to the Library. Prec. ISL Africa, Equatorial East, isobaric map,

529. Africa, South, occurrence of dolomite

in, 561. Africa, South-eastern, geology of, 548,

& pls. xxi.-xxii. (sections). ' Akerites/32. Alaska, mammoth-remains in, 1. .41ands arvensis, 19l & pl. x. Aleutian Islands, mammoth-remains

on the, 4, 8, 9. Alford, O. J., on auriferous rocks from

Mashonaland, Prec. 8. .Alluvial deposits in Matte Grosso, 99. AIps (Cottian), Waldensian gneisses

etc. in the, 232; (Lepontine), Me- sozoic rocks and crystalline schists in the, 285.

Altkirehe (Switzerland), marble of, 287; section at, 288.

Ammodiseus charoides, 696 ; A. gor- dialis, 696; A. incertus, 696; A. Tleurotomarioides, 697 & pl. xxxiv.

Ammonites (Stephanoceras) subar- matus, Prec. 4.

Amphibo[ites near Perrero, etc., 254, 259.

Arias boscas (?), 191 & pl. x. Anderson, Sir J., obituary, Proc. 44.

Andesites near Builth, 569. Andesitic ashes near Builth, 571. Andrews, Rev. W. R., & A. J. Jukes-

Browne, on the Purbeck Beds of the Vale of Wardour, 44.

Angrogna Valley (Italy), 256. *4nguis frayilis, 190 & pl. x. Annual' General Meeting, Prec. Io. Anomalina ammonoides, 722 ; A. ari-

minensis, 722; A. grosserugosa, 723. Anthrcwomya arenaeea, 440 & pl. xx. ;

A. elougata, 440 & pl. xx. ; A. l~vis, 441 & pl. xx. ; .4. ovalis. 441 & pl. xx.

Anthracoptera, name discarded for Naiadites, 438.

Anthracosla, later name than Car- bonicola, 441.

Anticlinal folds in Libyan D~sert, in relation to water-supply, .537.

Aplite in Ovrrardo Valley, etc. 247, 259: aplite-veins in 'pietre verdi,' 257 & pl. xv.

Apus, structure eompared w. triIo- bitic, 412 et seqq. ; diagram of eye, 421.

Alous (Lepidurus) spitzberffensis, sec- tions through, 427, 428.

Arara Limestone, 91. Archaeonisous - limestone, diagram

showing variations of strata be- tween it & Cinder-bed, 57.

Arctic regions, snowdrift deposits in, 475.

Argentina, fossil vertebrates from, 2roe. z46.

3 ~ 2

742 ~ X a X L

Arkan.qss novaculites~ 377 et seqq. Arnuld-Bemrose, H. }t., on Micro-

s('opic:d Structure of Carboniferous Dolerites & Tufts of Derbyshire, (iC'3 & pls. xxiv.-xxv.

Artesian boring near Windsor :Forest, 152, 496.

Ash, vAcanic, metamorphism of, 356 et seqq.

Ashover (Derbyshire), tuff, 639. Ashpriugton Volcanic Series, Proe. 73

et seqq. Auditors elected, _P roe. 6. Augite, causes of change into horn-

blende, 355, 359; in Derbyshire lavas, 621.

Augite-diorite veins in pyroxenite of Br~mdberget, 32.

Augite-porphyrite dykes near SSlvs- berget, 34.

Augite-syenite in Matto Grosso, 100. Austin, C. E., obituary, Proe. 44. Australia, Upper Carboniferous

boulder-beds of, 468. Axeline, W. T., Murchison Medal

awarded to, Proc. 35.

Babaria Oasis (Libyan Desert), 532, 535 et seqq,

Banded gabbros in Skye, 217 & pl. xiii., 645 & pls. xxvi.-xxviii.

Bargate limestone in Culford boring, 495; Bargate Beds of Surrey & their microscopic contents, 677 & pls. xxxiii -xxxiv.

:Barge (Italy), 258. Barlow-Jameson Fund, list of awards,

1 )roc. 25; award to C. Davison, Proc. 39.

Barnton (Midlothiau), picrite at, 39; section along railway, 39.

Barrow, G., Murchison Fund award to, Proc. 3 6.

Basalt near Bathurst (SLS.W.), 116 with analysis.

Basleity of gabbros, relative, tested by specific gravities, 321.

Bathurst (N.S.W.), geology of, 105; map & section, 108, 109.

Bathynotus holopygia (?), 671. Beaufort Beds in S.E. Africa, 553. Becher, H. M., obituary, I~rr~c. 5 I. Beneden, P. J. van, obituary, Proc. 55. Bernard, H. M., on Systematic Posi-

t.ion of the Trilobites, 411. Berrow Hill, Permian breecias, 465,

467. Bigsby Medallists, list of, Proc. 25. :Bird Reef Series conglomerates,

_Proc. 5.

I~Drx. [:Nov. i894 ,

Birmingham, snowdrift deposits seen at, 474.

Bison priscus from Twickenham, 456, 458.

Black-garnet schists in Lepontine Alps, 298 et segq.

Blomefield, Rev. L., obituary,rProe. 5o. Bolivina dilatata (?), 70t ; B. textila-

rioides, 704. Bolton, H., on a Goniatite from the

Lower Coal Measures, Proc. i45. �9 Bonney, T. G., on Conversion of com-

pact ' Greenstones' into Schists, 279 ; on Mesozoic Rocks & Crystal- line Schists in Lepontine Alps, 285 ; & Miss C. A. Raisin, on Relations of older Fragmental Rocks in ~.W. Caernarvonshire, 578.

Booysen Estate (Witwatersrand), boring on the, Proc. 5.

Borings, table of, in London Basin, 513.

Bos longffrons (?) from Twickenham, 456, 458, 461.

Bostonites in Gran district, 23; ana- lyses, 26, 27.

Bo{llay Bay (Jersey), devitrified ob- sidian, 12 & pl. i.

Boulders found in coal-seams, 1)roe. 63.

Boulder-beds, Upper Carboniferous, of India and Australia, 468.

Boulder Clay, at Barnton, 39; in Romford district, 446 et .~eqq. ; rela- tions to Thames Valley Beds, 44S.

Brandberget (Norway),olivine-gabbro- diabase, analyses, 19, 20; pyroxenite, analysis, 31.

Breccias, Permian, of England, 463. Brent Tor (Devon) rocks. 360. Brodie, Rev. F.B., on Discover)' of

Molluscs in Upper Keuper at Shrewley, 170.

':Broken Beds' (Purbeck) equivalent iu Wilts, 50..

Brook Bottom (Derbyshire), 611; tuff, 626.

Bryozoa, see Polyzoa. ,B~ifo wd.qaris, 1"90 & pl. x. Builth (Radnorshire), igneou.~ rocks

of neighbourhood, 566; geological sketch-map of district, 568.

Bulimina afllnis, 702 ; B. brevis, 703 ; B. Murchisoniana, 703 ; B. obliqua, 702 ; B. obtusa, 703 ; B. ovata, 702 ; B. polqstroTha, 701 & pl. xxxiv. ; B. Presli, 703; B. pupoides, 702; B. pyrula, 70"2.

Buschbad (Saxony), perlitie obsidian, 12& pl.i.

Bussoleno (Italy), 245; map of

Vol. 50.] GENERAL INDEX. 743

district, 246 ; Waldensian gneiss from, pl. xv.

l~ateo (?), 191 & pl. x.

Oaernarvonshire, Cambrian and pre- Cambrian in, Prec. 98 et seqq. ; re- lations of older fragmental rocks iu N.W., 578.

Calamopbyllia fenestrata, 305, 306. Calcaire du Brianqonnais, 304, 310. Calymene Blumenbaehii, pygidium,

424; C. seuaria, sections through, 4"~)7, 428.

Cambrian rocks, papers on, summa- rized, Prec. 8z.

Cambridge, snowdrift deposit seen at, 473.

Camptonites in Gran district, 23; analyses, 26, 27.

Canis lagopus, 202 & pl. xii. ; C. vMpes, 201 & pl. xii.

Capreolus caprea~ 199. Carbonicola ( Anthracosia) angulata,

441 & pl. xx. Carboniferous (?) in Matte Crosse, 97 ;

(Upper) boulder-beds of India and Australia, 468; dolerites & tufts of Derbyshire, microscopical struc- ture of, 603 & pls. xxiv.-xxv.

Carboniferous Limestone, papers sum- marized, Prec. 7 I.

Carrock Fell, gabbro of, 311 & pl. xvii.; map, pl. xvi. ; sectioo across, 314.

Carychium minimum, 184. Cassidulina subglobo.~, 704. Castleton (Derbyshire), tuft, 625. Catherine Ford (Wilts) 8oetion de-

scribed, 61. Cave-sandstone in S. Africa, 551. ' Central gneiss,' in Cottian sequence,

233 et seqq. Cereus elaphus, 199. Chaberton, Monte, geology of, 303;

map of, 309; section through, 310. Chalk, I~wer, in Culford boeing, 493 ;

M. L., & U., in Wiukfield boring, 497, 499.

Channel Islands, papers on the, sum- marized, t)roc, z :35.

Chapada Sandstones, 95. Chapman, F., on Bargate Beds of

Surrey & their Microscopic Con- tents, 677 & pls. xxxiii.-xxtiv.

Charlcsworth, E., obituary, Prec. 47. Cheilostomatous polyzoa in Inf.

Oolite of Shipton Gorge, 72 & pls. iL-iv. ; in Middle Lias of King's Sutton, 79 & pls. v.-vii.

Chert, in Brazilian Limestones, 92; compared with nowculite, ~78 et

seqq. ; with sponge-spicules, from Builth, 573.

Cheshunt (Hertz), boring near, 508; samples from, described, 509.

Chilmark (Wilts), section described, 48.

Chilworth (Surrey), Bargate Beds near, 681.

Chisone Valley (Italy), 251. Christiania (Norway), geological map

of district, 16. Church Hill, Permian breccias of,

464, 465. Cinder-bed, diagTam showing varia-

tions in strata between it & Arch,e- oniseus-limestone, 57.

Cis?ern~fera clausa, gen. et sp. nov., 82 & pl. vii. ; C. inconstans, sp. nov., 80 & pl. v. ; id. forms Frima, 80 & pl. v.; id.formasecunda, 81 & pl. vi.; id. forma tertia, 82 & pls. v., vi. ; id. forms quarts, 82 & pl. vi.

Claatic gneisses, 265, 266. Cleat Hills, Permian breecias of, 464,

466. Clos des Morta Valley, sections, 305 ;

Clos des Morts Limestones, 304: et seqq.

Coal in S.E. of England, Prec. 68. Coal Measures at Lithgow (N.S.W.),

115. Coal Measures, Nova Seotian, Naia.

dites from, 435 & pl. xx. Coal.~ams, boulders found in, Prec.

63 ; wash-outs in, Prec. 64 ; for- matiou of, Prec. 65 ; marine fossils in, Prec. 66, 67 ; coal-seams in Mol- teno Beds of S.E. Africa, 552.

Cock's Tor (Devon), volcanic ash, etc, of, 351,357.

Col de Vento (Cottian Alps), 249; map of gnei~ exposures, 251.

' Complementary rocks' defined, 31. Composition-fee raised, Prec. 150. Concentration-hypothesis of minerals

in gabbro, 3:.)7. Cone-in-cone in Devonian (?) of Penn-

sylvania, 731 & pls. xxxv.-xr~vi. ; cones, inverted, 731 ; double coue- in-cone, 732.

Contact-metamorphism along boun- dary of olivine-gabbro-diabases of Gran, 21; produced by Bathurst granite, 111, 117 ; in Cottian Alps, 261, ~ 2 ; contact-rocks from Ca- tans, pl. xv.; contact-phenomena in Carrock Fell gabbro, 331.

Cordilleran Glacier, 5. ' Corduroy' structure ha metamor-

phosed tuff, 352,

744 GENERAL INDEX. [Nov. 1894 ,

' Corrie ' glaciers, 515. Corstorphine Hill (Mid!othian), dole-

rite, 42. Corumb~ Limestones, 9 I. Cotham Marble, description of cha-

racters, mode of occurrence, & for- mation, 393; theories as to origin, 399 ; experiments reproducing, 405.

Cotman's A-sh (Kent), s-ection to Shin- gle Hill, 174; section along Shode Valley to Plaxtol, 175.

Cottian Alps, d~cribed, 232; the Cottian Sequence, "234.

Council, report for 1893, Proe. I0 ; & officers elected, Proe. x T-I 8.

Cracknowl House (Derbyshire), tuff, 632.

Cretaceous (?) in Matto Grosso, 98; in Monte Chaberton area, 306; in Libyan Desert of Egypt, 534.

Crissolo (Italy), 258. Cristellaria acutauricularis, 713; C.

Bronni, 713 ; C. complanata, 712 ; C. convergens, 714; C. crepidula, 712; C. cultrata, 714; C. cym- boides, 713; C. gibba, 714; C. grata, 713 ; C. italics, 712 ; C. lscvi- ~ata, 713 ; C. megalipolitana, 714 ; C. oligostegia, 713; C. parallels, 712; C. prominula, 714; C. rotu- lata, 714; C. Schloenbachi, 712; C. sulcifera, 712; C. tricarinella,

" 711;C. varians, 715; C. vest ita, 711. Crusskey, H. W., obituary, Proc. 52. Croxdale Colliery, dyke in coal-seam

at, Prvc. 3" Crystalline schists, papers on, sum-

marized, Proc. toz ; in the Lepon- tine A1ps, 285.

Cultbrd (Suff.olk), deep boring at, 489 ; description of samples, 491 ; classi- fication of beds, 4 ~ .

Cuyab'~ (Brazil), section to Tapira- puam Hills, 89.

Cuyab~ Slates, 90. Cypris fasciculata, determining base

of Middle Purbeek, r~4. Cythere ~tioostata, sp. nov., 166 &

pl. ix. ; C. vesiculosa, sp. nov., 688 & pl. xmdii.; C. J4Zilsoni, sp. nov., 167 & 131. ix. ; C. sp. ?, 167 & pl. ix.

Cythereis [,ensddeana, 689; C. ornatis- sims, 658; C. o. vas'. rcticulata, 689.

Cytheridea elIipsoidea, 164 & pl. ix. ; C. bieagmtta, 090; ~ b. var. nodu- /osa, nov.., O90& @I. xxxiii. ; C./n~va- /r/I/aCa, ep. nov., 691 & pl. xxxiii. ; C. r '690 :; 6'. fenestrata, sp. noz., .O00& 1311. ~:Dii'i..; C. Moorei, ep. nov., 16ii &'ph ix. ; ~ . retorrida, fi89; ~ a~o~ndttta,,68..9; C. subper-

forata, 689; C. vdlicata, sp. nov., 690 & pl. xxxiii.; C. sp., 166 & cypl. ix. therop/eron ~rodiei, sp. nov., 167 & pl. ix. ; C. eoncentricum, 691; C. e. vat. virginea, 691 ; C. costuli- feruTn, sp. nov., 692 & pl. xxxiii. ; C. drupaceum, 691; C. laticrista- turn, 692 ; C. reticulomtm, ap. nov., 692& pl.xxxiii.; C.subconcentrieum, 691.

Dakhla Oasis (Libyan Desert), 533 et segq.

' Dark loam layer ' (Pleistocene) at Twickenham, analysis, 457.

Darlmoor granite, Proc. Iz7 eg seqg. ; trachytes, metamorphosed tufts, & other rocks of igneous origin on W. flank of, 338.

.Daru,inula globosa, 163 & pl. ix. ; D. 9l. var. stricta, nov., 164 & pl. ix. ; D. liassiea, 162 & pl. ix. ; D. L var. ~zt~or, nov. 163 & pl. ix.

Davies, A. M., & J. W. Gregory on geology of Monte Chaberton, 303.

Davis, J. W., obituary, Proe. 44- Da~ison, C., Barlow-Jameson Fund

award to, Proc. 39; on Deposits from Snowdrift, with especial refer- ence to Origin of Loess & pre.~rva- tion of Mammoth-remains, 472.

Dawson, G. M., on the Occurrence of Mammoth-remains in Yukon dis- triet of Canada and Alaska, 1.

Dawson, Sir g. W., on .Naiadites in C(~d.formation of Nova Scotia, 435 & pl. xx.

Denton, J. B., obituary, Proc. 52. Derbyshire, microscopical structure of

Carboniferous dolerites & tufts, 603 & pls. xxiv.-xxv.

' Detrital quartzites,' 380. Devonian of Bathurst (N.S.W.), 114;

(?) of Pennsylvania, cone-in-cone in, 731 & pls. xxxv.-xxxvi.; in Matto Grosso, 95; the succession in S. Devon, True. 74 et seg~.

Devonian Limestonee of S. Devon, microscopic structure of, Proz. 7z.

Diabases of Carroek Fell, 813 ; of Builth district, 574.

Diabase-porphyrite of Builth district, ~ 7 .

DiastoTora , so-called, 83 & pl. v. Differentiation of common magma

originating various eruptive rocks in Gran district, 26, 31, 35; the same eont, r~sted with differentiation described at Carrock Fell, $26 ; differentiation in situ, 656.

Vol. 5o.J GENERAL INDEX, 745

Dignaes (Norway), oliviue-gabbro- diabase, analysis, 19, 20.

Dinton (Wilts),sections near, described, 56, 58, 59; sections along railway, 60.

Diorite, auriferous, Prec. 9. Diseorbina araucana,721 ; D. Berthe-

loti, 720 ; D.B. var. Baconicu, 720 ; D eoncinna, 720; D. obtusa, 720; D. orbicularis, 719; D. 1)arisie,:sis, 719; D. pileolus, 719; D. rcsacea, 719 ; D. rugosa, 720 ; D. turbo, 719 ; D. Vilardeboana, 721.

Disthene-schists in Lepontine Alps, 2~.~7 et seqq.

Ditch Cliff (Derbyshire), 610. Dolerite-vein in Barnton picrite, 42;

dolerite of Corstorphiue Hill, 42; ot" Tapirapuam (Brazil), 100; al- tered, of Brent Tot, 361 ; dolerite associated with Dwyka Conglome- rate, 555; Carboniferous dolerites of Derbyshire, microscopical struc- ture of, 603 & pls. xxiv.-xxv.

Dolomite, suggested replacement by silica, 38l, ;:~$6, 564; occurrence in South Africa, 561 & pl. xxiii. (sec- tions).

Dorking (Surrey), section on Horsham Road described, 687.

Dove Holes (Derbyshire). 010; tuff, 629.

Drakensberg range (S.E. Africa), 548 ; diagrammafio section of, & High Vetd plateau, 560 & pl. xxii. ; see- tion from Mont aux Sources to St. Lucia Bay, pl. xxii.

Draper, D., on Geology of S.E. Africa, 548 & pls. xxii.-xxiii. (sections) ; on Occurrence of Dolomite in 8. Africa, 51~1.

Drift near Bathurst (N. S. W.), 116. Druim an Eidhne (Skye), relations of

gabbro and granophyres, 216 et seqq. ; banded structure of Tertiary gabbros, 646 & pls. xxvi.-xxviii.

Dust (of snowdrift deposits), origin & transportal, 477.

Dwyka Conglomerate in S.E. Africa, 554, 559.

Earth-movements in the Cottiaus, 271 ; of Monte Chaberton, 308; at Wadi Halfa, etc., 546-547.

Eeca Beds in S.E. Africa, 554. Edwards, D. T., on Boring on the

Booyseu Estate (Witwatersrand), Prec. 5.

Egge (Norway), analyses of camp- t onite from, 26, 27.

Egypt, stratigraphy and physiography

of Libyan Desert, 531 & pl. xxi. (map.).

Ehrenber.qina pupa, 70~ & pl. xxxiv. 'Elephant-rock' in Transvaal, 561,

5~;2. Elephas primigenius (?), 198. Ember Lane (Derbyshire), dolerite

& tuff, 632. Endsl~igh Street Beds, position dis-

cussed, 452. Eoeeue in Libyan Desert of :Egypt,

53L :Epidiorite, porphyritic, of Sourtou

Torn, 3-10; of Cock's Tot, 35S; ,)f W. Dartmoor, origin discussed, 365.

Equus eaballus, 198. Estheria Dawsoni, 437, 439. Evans, g. W., on the Geology of Matte

Grosso. (Brazil), 85 & pl. ~iii. (map). :Exogyra Overwegi-series in Libya~

Desert, 534, 535. Eycott group in Oarrock Fell district,

313, 315, 331.

Farafra Oasis (Libyan Desert), 535 540.

Fellows elected, Prec. I, 2, 3, 4, 5, 8, I4I , I4z, I43, 144, x~ 5, x47, I48 ; number of, Prec. 14; names read out, Prec. x48.

Felsites of Sourtou Tots, 3 t3; in N.W. Oaernarvoushire, 579 e/seqq.

Feisitic dyke in gabbro, Druim an Eidhne, 22)6.

Felspars in Derbyshire lavas, 622. Financial report, Prec. z6. Flint compared with Arkansas stone,

378 et seqq. & pl. xix. Fluxion-gneisses, 267. Foraminifera of Lower Greens,~nd,

688; from Bargate Beds, 693 & pls. xxxiii.-xxxiv. 726

Foreign Correspondents elected, Prec. x, 4, ~43, 147 ; list of, Prec. 2o.

Foreign Members elected, _Prec. 4, x43, x~8 ; list of, Prec. 19.

Foresto di Susa (Italy), section to Gerrardo Valley, 248.

Foxes' bones, measurements of, '202. Frondivularia briz~formis, 709 &

pI. xxxiv. ' Fundamental rocks,' papers on,

summarized, Prec. 93. Furka Pass, section at summit, 295.

Gabbro bo.~es in Web, tern Isles (Scot- land), 216 ; relations w. granophv,'e in Skye, o16 et sexlq. ; banded, ib'id., 217& pl. xiii., 645 & pis. xxvi.-x_xviii. ; chemical analysis of same, 653; coarse and massive variety, 649,

746 VXl~ERAL n~vsx . [Nov . i 8 9 4 ,

654; granulitic variety, 647, 650; pale veins, 650, 654; gabbro of Carrock Fell, 311 & pls. xvi.-xvii. ; mineralo~cal characters of same, 316, 319; orderly variation from centre to margin, 320; chemical analyses of same, 323; causes of variation, 324 ; lava-masses enclosed in, 315, 331; metamorphism by granophyre, 334.

Gaudryina baccata, 700 ; G. filiformis, 701 ; G. pupoides, 700.

Gault in Winkfield boring, 499; in Ware boring, 507.

Geikie, Sir A., on Relations of Basic & Acid Rocks of Tertiary Volcanic Series of Inner Hebrides, 212 & pls. xiii.-xiv. ; & J. J. H. Tcall, on Banded Structure of Tertiary Gab- bros in Skye, 645 & pls. xxvi.-xxviii.

Gerrardo Valley (Italy), 246, 247; section, 248.

Glacial origin of Carboniferous boul- der-beds in India & Australia, & of Permian breccias of England, 469 ; glacial geology of Mount Kenya, 515 ; ' glacial boulder -clay,' so-called, in S.E. Africa, 554.

Glaciation, limit of, in N.W. America, 5 ; no evidence in S.E. Africa, 558.

Globigerina bulloides, 718; G. cre- tacea, 718.

Gneisses,Waldensian, 232, 239; sketch- map of distribution of ~me, 238; gneiss & limestone junction at Col de Vento, 249; 'pierre verdi ' in- clusions in, 242, 250; origin of gneissic structure, 264; classification proposed, 266 ; structure and origin elucidated by banded gabbros, 657.

Godalming (Surrey), day-seams in Bargate Beds at, 687.

Gold in the Witwatersrand Series, origin of, Proc. 6o.

Oold-bcat4ng rocks from Mashonaland, Proc. 8 ; quartzite from Nondweni, 3S~, 389; dolomite of Malmani, 563, 565.

Gold-deposits in Matto Grosso, with analysis of matrix-rock, 102, 103.

Goniatite from Lower Coal Measures, Proe. ~45.

Oosml Beds of Gosau district~ '120; map, 126 ; paheontology, 134 ; geo- logical horizon, 137 ; correlation w. English Upper Cretaceous, 147; physical history of, 147.

Gran (Norway), basic eruptive rocks of, 15 ; map of district, 17.

Grange Mill (Derbyshire), tuff, 633. Granite of Bathurst (N.S.W.), 107,

110 ; on South Down (Devon), 350;

hornblendic, of Jebol Abu Bayan, 532.

Granopb)Te in Skye, relations with gabbro, 216 et seqq. ; granophyre- dyke intersecting banded gabbros,

1. xiv. ; granophyre of Carrock ell, 312 et se~q.; same metamor-

phosing gabbro, 334. Gran ulitic gabbros of Druim an ~Eidhne,

647, 650. Graptolite-zones, Proc. 79. Gravels near Bathurst (N. S. W.), 116. Oreensand, Lower, in boring near

Windsor Forest, 152, 496 et seqq. ; in Culford boring,493,495; (Upper) in Winkfield boring, 498, 499; os- tracoda & foraminifera of the, 688.

Greenstones, compact, conversion into schists, 279.

Gregory, J.W., onWaldensian Gneisses & their place in the Cottian Sequence, 232 ; on Glacial Geology of Mount Kenya, 515; & A. M. Davies, on Geology of Monte Chaberton, 303.

Greisen of Carroek Fell, 313, 314. Gresley, W. S., on Cone-in-cone in

Devonian (?) of Pennsylvania, 731 & pls. xxxv.-xxxvi.

' Ground-ice' formation in Alaska, 3, 6.

Griim Alp (Engadine), .'279. Guildford (Surrey), Bargate Beds near,

678.

Halfpenny Lane (Chilworth), sections of Bargate rocks from, 682, (i84.

' Hanging ' glaciers, 515. Haplophragmium acutidorsatum, 69.5 ;

H. agglutinans, 693 ; H. depressum, 695 ; H. emaciatum, 694 ; H. tblia- ceum, 694 ; H. Humboldti , 694 ; H. irregulare, 694; H. neocomianum, sp. nov., 695 & pl. xxxiv. ; H. nonio- ninoides, 695.

Harker, A., on Gabbro of Carrock Fell, 311 & pls. xvi.-xvii.

Hartebeest Fontein (Transvaal), sec- tion to Vredef, Jrt, 560 & pl. xxiii.

Haslemere (Surrey), section to Maiden- head, 154.

Hawksley, T., obituary, Proe. 4]. Hebrides (Inner), relations of basic &

acid rocks of Tertiary volcanic series, 212 & pls. xiii.-xiv.

' Herring-bone' structure in pyroxene, 317.

High Veld Plateau (S.E. Africa), M9; section, 560 & pl. xxii.

Highlands, N.W., physical relations & post-Cambrian metamorphism of rocks in, Proo. 89 ; additions to fituua

Vol. 5o.] GENERAL INDEX. 747

of Olenellas-zone, 661 & pls. xxix.- xxxii.

Hill, W., Lyell Fund award to, Prec. 35.

ttippurite-limestone in Orosau district, 128, 132.

l:[Shue], Mount & Lake (Equatorial East Africa), 519.

Ho.lloway Hill[Godalming),clay-m,ms *n Bargato Beds at, 687.

I]:olmes, T. V., on Sections on RomJbrd & Upminster Railway, & Relat ons of Thames Valley beds to Ben der Clay, 443.

Holmia Kjerulfi, 671 & pl. xxxii. I-Iopton (Derbyshire), tuff, 6~3. Hornblende in eamptGnites, 29. Hornblende-schistsof.L.izard comps red

with Cock's Tor rocks, 355 et s~ I~., 364.

Hospenthal (Switzerland), section do scribed, 2(.}2.

Hospenthal schists, 287 et seqq. Hudleaton, W. IL, addresses to Medal-

lists, Prec. ~z et seqq. ; obituaries of deceased Fellows, 1~oc. 4~ et seqq. ; presidential address on Reeent Work of the Geological Society, pt. ii., Prec. 5g.

Huken (Norway), analysis of labrador- porphyrite, 33.

:Hull, E., on an artesian boring at New Lodge (Windsor Forest), Berks, 152.

Hurst Wood (Kent), section to Shingle Hill, 174.

Hyena crocuta (?), 201 & pl. xii. ttypersthene, analysis of, 22.

Ice-formation, underground, origin of, 485.

Iddingsite, differentiated from Potluck pseudomorphs, 617 et seqq.

Ightham (Kent), ossiferou~ fissures near, 171; vertebrate fauna from same, 188 & pls. x.-xii. ; table of distribution of vertebrate, 203.

India, Upper Carboniferous boulder- beds ot; 468.

' Inflltration.quartzites,' ,%f~0. Insect-bed in Vale of Wardour Put-

becks, 62. Irou-ores in Matte Grease, 98, 99,

103; near Wadi Halfa, 534. Isobaric map of Equatorial East Africa,

529. Isopods, in relation to trilobites, 432.

Jebel Ahmar Sandstone, 537, 541. Johnston-Levis, H. J., Enclosures of

Quartz in Lava of Stromboli, eta., & Changes in Composition produced by them, Prec. z.

Jones, T. R., on Rhmtic and some Liassie Ostracoda of Britain, 156 & pl. ix.

Jukes-Browne, A. J., & Rev.'W. R. Andrews on the Purbeck Beds of the Vale of Wardour, 44; & W. Whitaker, on deep Borings at Cttl- ford and Wiukfield, with Notes on those at Ware and Cheshuut, 488.

Jurassic rocks in the Lepontine Alps, 285.

Kazoo Beds in S.E. Africa, 553. Kemp's Hill (Derbyshire), 610. Kenlochewe (P~ss~ Olenellus-

fauna from, 66I & pls. xxix.-xxxii. Kentish Rag, equivalent, in Culford

boring, 495. Kenya, Mount, glacial geology of;

515; view of central peak, 516; map of S.W. slopes, 517; nature & age of glaciation, 520; causes of glaciation, 522; climatic con- ditions during period of maximum glaciation, 5'-~..

' Kern' hypothesis of l~osenbusch, 31, 36.

Keuper (Upper) at Shrewley, molluscs in, 170.

Keyserling, A, yon, obituary, Prec. 53. Kharga Oasis (Libyan Desert), 552

et ~eqq., 537. King's Sutton (Northanta), polyzoa

from Middle Lias of, 79 & pls. v.-vii. Kniveton (Derbyshire), tuff, 637, 638. Kotzebue Sound (Alaska), mammoth

& other remains, 3, 9. Kynaston, H., on Gosau Beds of

Gosau district (Ausuian Sahkam- mergut), 120.

Labrador-porphyrite of Huken, ana- lysis, 33.

Lady Down (Wilts), section described, 54.

Laffan, O. B., & J. R. Leeson, on Plei~ocene deposits in Thames VaN ley at Twickenham, 453.

Lagena acuticosta, 706; L. apiculata, 705 ; L. globosa, 705 ; L. lmvis, 705 ; L. Meyeriana, sp. nov., 706 & pl. xxxiv.

Lagomys pusillus, 194 & pl. xi. Lake-basins, glaciated, of Mount

Kenya, 519. Lake District, petrological papers on,

summarized, Prec. * t9. :Landscape Marble, description of

characters, mode of occurrence, & formation, 393; theories as to origin, 399; experiments repro- ducing, 405.

~48 GE.'~*'ER,kL INDEX, [Nov. 1894 ,

Larus (?), 192 & pl. x. Lava, quartz-enclosures in, Prec. z ;

perlitie & spherulitie structures in vitreous and devitrified lavas, 11, 12, & pl. i. ; Carboniferous lavas in Derbyshire, microscopical structure of, 611.

Lava-masses enclosed in Carrock Fell gabbro, 315, 331.

Leeson, J. R., & G. B. Laffan, on Pleistocene Deposits in Thames Valley at Twiekenham, 453.

Leigh Creek (S. Australia)Jurassio coal-bearing beds. Prec. 6.

Lepidodendron in Devonian of Bath- urst (N. S. W.), 114.

Lepontine klps, Mesozoic rocks & crystalline schists, 285.

Lepus timidus, 193 & pl. xi.; L. eunieulus (?), 194.

Lewis Glacier (Kenya), 515 ; terminal moraines of, 522 fig.

Lewisian gneiss, 657. Lias (Middle), cheilostomatous polyzoa

from the, 79 & pls. v.-vii. Liassie ostracoda, 156 & pl. ix. Library, additions to, Prec. 15 x. Library & Museum Committee Report,

.Prec. ~ z .

Libyan Desert of Egypt. stratigraphy & physiography, 531 & pl. xxi. (map).

Limburg (Baden) pyroxene, analysis, 31.

Lingulina earinata, 708; L. semi- ornata, 708; L. s. vat. cra&~, nov., 708 & pl. xxxiv.

Littleton Lane (Guildford), Bargate Stone & Pebble Beds in, 678.

Loess, origin of, 484, 486. Litton (Derbyshire), 611; dolerite

& tuff, 627. Lizard (Cornwall), papers on the,

summarized, -Prec. 131 ; hornblende schists eompared with Cock's Tot rocks, 355 et seqq., 364.

Llandeilo, Lower, age of andesitic ash near Builth, 572.

Llyn Padarn (Caernarvonshire), sue- cession W. of, 581, & section, 583 ; succession E. of, 586; alleged un- conformity, 588, & sections, 590, 592; geological sketch-map, 594.

London Basin, table of deep borings m, 513.

London Clay at Twiekenham, 45,3, 456.

Long Sleddale (Westmoreland), de- vitrified obsidian, 12 & pl. i.

Lessen, K. A., obituary, Prec. 54. Luxmoore, E. B., obituary, Prec.

43.

Lydekker. R, on Argentine fossil vertebrates, Proe. I46.

Lyell Fund award to W. Hill, Proc. 38.

Lyell Medal awarded to J. Milne, Proc. 37.

Lyell Medallists, list of, Proc. 24. Lyons, H. (~., on Stratigraphy & Phy-

siography of Libyan Desert of Egypt, 531 & pl. xxi.

M~.Mahon, C. A., on Trachytes, meta- morphosed Tufts, & other rocks of Igneous Origin on W. Via,& of Dartmoor, 338.

Mmna, Lake (Norway). analyses of camptonite & bostonite from, 26, zT.

Magmas, igneous, protrusion & con- solidation of, 655; differentiation of common magma originating various rocks, 26, 31, 35.

Magnesian Limestone showing rhom- bohedra, 381 & pl. xix.

Maidenhead (Berks), section to Hasle- nlere, 154.

Mahuani district (Transvaal), gold- bearing dolomite, 563.

Malmesbury Schists in S.E. Africa, 556.

Malvern Hills, rocks of the, Prec. Io 3 et seqq.

Mammoth-remains, in Yukon district; & Alaska, 1 ; preservation of, 485.

Manganese ore in Matte Grosso, 99. Manganiferous earth, associated with

auriferous beds in S. Africa, 565. Marble of Altkirehe, ").87. Marginulina tequivoea, 709; M. com-

pressa, 709; M. debilis, 709; M. Jonesi, 709; M. linearis, 709; M. Munieri, 710; M. striatoeostata, 710.

Mashonaland, auriferous & other rocks from. Prec. 8, 144.

Matte Grosso (Brazil), geology of, 85; map of, pl. viii.

Matte Shales, 93. Meall a' Ghubhais (Ross-shire), Olemel-

lzts-fauna from, fi61 & pls. xxix.- xxxii.

Meall Dearg (Skye) granophyre, 215. Meano (Italy), 251. Meldon (Devon), tufts etc. of, 347. Meles taxus(?), 201. Jle~onacis asaphoides, 673 fig. 2 &

tPigl, xxxii.; M. Mickwitzics, 673 . 2 .

Mesozoic rocks in the Lepontine Alns, 285.

Metamorphism, post-Cambrian, in N.W. Highlands, Proc. 8 9.

Vol. 50.] G E/~ ERAL I N D E X . 749

' Metapyrigeu-gneisses,' 266. ' Metasumatic quartzites,' 380. Mica-diorite el South Deron, 351. Mica.like mineral replacing olivine,

616 et seqq. Microdiscus Meeki, head-shield, 414. Microtus (=Arvicola) agrestis, 197 ;

M. amphibius, 196; M. arvalis, 197; M. glareolus, 196; M. gre- galls, 197 & p1. xi. ; _31. ratticeps, 197 & pl. xi.

Middleton (Derbyshire), 611. Miliolina agglutinans, 693. Miller's Dale Station (Derbyshire)

dolerite & tuff, 631. ]YIilue, J., Lyell Medal awarded to,

Prec. 37. Minniuglow (Derbyshire), 610. Miocene in Libyan Desert of Egypt,

535. Moel Ooronwy (Caernarvonshire), sec-

tion across, 597. )Ioel Tryfaen (Caernarvonshire), suc-

cession at, 5~0. Mokattam Beds in Libyan Desert,

535. Molluscs in Upper Keuper at Shrew-

Icy, 170 ; in lgh tham fissure, 182, 1~3.

Molteno Beds in S.E. Africa, 552.1 Monckton, H. W., on a Variety of

Ammonites (Stephanoeeras) sub- armatus, Young, from tim Upper Lias of Whitby, Prof. 4; on Pic~ito & associated rocks at Barnton, near Edinburgh, 39.

Monk's Dale (Derbyshire) tuff, 6.'29. Moraines, old, on Mount Kenya, 518,

520; terminal moraines of Lewis glaeier, 522 fig.

Murehison Fund award to G. Barrow, Prec. 36.

Murchison Medal awarded to W. T. Aveline, Prec. 35.

~urehison Medallists, list of, Prec.

3lus Abbotti. sp. nov., 195 & pl. xi. ; M. sfflvaticus, 194 & pl. xi.

~lustela rob~ta, sp. nov., 200 & pl. xi. ; 21[. mdgaris, var. minuta, 201 & pl. xi.

Mustione (Italy), 250. ~dyalina, restriction of name, 438. 21Iyodes lemm~s, 196 & pl. xi. ; M.

torr 196 & pl. xi.

Ntes (Norway), bostouite-bteceias, 25. Naiadites in Coal-measures of /Nova

Scotia, 435 & pl. xx. ; synonymy of, 439 ; ~. carbonarius, 440 & pl. xx.

Name8 of Fellows read out, P r ~ . 148.

Nerin,'ea-limestone in Gosau district, 128, 132.

New Lodge (Berks), artesian boring at, 152, 491;.

:Newton, E. T., on Vertebra(e Fauna from Ightham fissure, 188 & pls. x.-xii.

Nile Valley, erosion of the, 541. l~*odo~ria (Dentalina) brevis, 703;

N. Fontannesi, 707; N. limbata, 707 ; N. (,bst~nra, 707 ; N. prisms- tics, 707 ; N. Rcemeri, 706; ~N. tenui- costa, 707 ; N. xiphioides, 707.

1%ndweni (Zululand), auriferous quartzite from, 388, 389, 564.

~N'onionina scapha, 724. Nova Scotia, Na/adites in Coal-forma-

tion of, 435 & pl. xx. Novacuhtes, origin of, 377 & pl. xix. :Nubian Sandstone in Libyan Desert,

533, 546. l~'umber of Fellows, etc, in 1893, Prec.

x4.

Oberalp Pass (Switzerland), 287. Obsidian, perlitic cracks, etc. in, 11,

12. Oldham, R. D., on Comparison of

Permian Breceias of Midlands with Upper Carboniferous Glacial De- posits of India and Australia, 463.

OlenelloiJ~, subgen, r~ov., (4{k~ ; 0. ar- mafas, sp. nov., 669 & pl. xxxii.

Olenellas-zone, additions to fauna in N.W. Highlands, 661 & pls. xxix.- xxxii.

Olntellus asaphoides, 415, 416, 423; 0. gigas, sp. nov., 666, fig. 1 & pl. xxxii. ; O. Gilberti, 671 & pl. xxxii. ; 0. inlermedius, sp. nov., 666 & pl. xxxii. ; 0. Lapworfhi, 662 & pls. xxix., xxx., xxxti. ; O.L. var. don- galus, nov., 664 & pl. xxix. ; 0. rer culatus, sp. nov., 665, 673, fig. 2, & pls . xxx.-xxxi.

Olivine-crystals, perlitie cracks in, 374, 375; in Derbyshire lavas de- scribed, 611; pseudomorphs after, 613, 614.

Olivine-dolerite of gobel Burka, 533 ; of Derbyshire, 624.

Olivine-gabbro-diabases of Gran dis- trict, 18 ; analyses of same, 19, 20 ; contact-metamorphism by, 21.

Oolite (Inferior) of Shipton Gorge, polyzoa from, 72 & pls. ii.-iv.

Oolite, silieified, 93. Ordovieian rocks, papers on, summa-

rized, Prec. 78. Oasi:'erous fissures near Ightham, 171 ;

plants and invertebrata in, 181; ~erteb:'ate 'fauna from same, 188

750 Gz~zaxz

& pls. x.-xii. ; table of distribution of vertebrata, 203.

Ostana (Po Valley), 276. Ostracoda, Rhmtic and Liausic, of

Britain, 156 & pl. ix. ; of Lower Grecnsand, 688; from Bargate Beds, 688 & pl. xxxiii., 725.

Ouachita stone, 377 et seqq. Owen, R., portrait presented by

E. Swain, Proc. 14~.

Paheozoic reached at Culford, 490, 495 ; in Ware boring, 507.

Pal4 (Italy), 247. Paradiso massif (Cottian Alps), 240;

gneiss from margin of, pl. xv. Parkinson, J., on Leigh Creek Jurassic

Coal-measures, Proc. 6; on Physical & Chemical Geology of Interior of Australia, Proc. 7.

Patellina antiqua, sp. nov., 718 & pl. xxxiii. ; P. eorrugata, 718.

Peach, B. N., on Additions to Fauna of Olenellus-zone in N.W. High- lands, 661 & pls. xxix.-xxxii.

Peak Forest (l)erbyshire) pseudo- morphs after olivine, 614.

Pellice Valley (Italy), 257. Pen-cerig House (Radnorshire), sec-

tion near, 575. Pengelly, W., death announced, Proe.

143. Pennsylvania, cone-in-cone in Devo-

nian (?) of, 731 & pls. xxxv.-xxxvi. Pergensia amphoralis, gen. et sp. nov.,

75, 76, & pls. ii., iii. ; P..qaleata, sp. nov., 76 & pl. iii.; P.jugata, sp. nov., 76 & pls. ii., iv. ; P. jugata, var. bi- gibbosa., nov., 76 & pls, ii., iv.; P. ma~or, sp. nov., 74 & pls. ii., iii. ; P. minima, sp. nov., 74 & pls. ii., iii. ; P. nidulata, sp. nov., 73 & pls. ii., iii. ; P. porifera, sp. nov., 75 & pls. ii., iv.

Perlitic and spherulitic structures, sequence of, 10; perlitic cracks in quartz, 367 & pl. xviii.

Permian breccias of Midlands, com- pared with Upper Carboniferous glacial deposits of India & Aus- tralia, 463.

Perosa (Italy), 251. Perrero (Italy), 254. Phthanites, radiolarian, in Cottian

series, '268, 269. Picrite at Barnton, 39. ' Pietre verdi' series in the Cottians,

233 et seyq. ; ' pietre verdi ' inclu- sions in gneiss, 242, 250; veins of aplite in 'p. v.,' 2571; 'p. v.' in Mon4e Chaberton area, 307.

IN DF.X. [-NOV. I894 ,

Pitchstone, porphyritic, of Sandy Braes, 368.

Planispirina obscura, sp. nov., 693 & pl. xxxiv.

Plant, J., obituary, Proe. 52. Plants in fissures at Ightba,n, 181. Plaxtol (Kent), section across valley

at, 174; section to near Cotman's Ash, 175.

Pleeotus (Vespertilio) auritus (?), 193.

Pleistocene deposits at Twickenham, 453; mammalia, molluscs & plants, 458 ; (?) at Ightham, 171.

Plioeene in Libyan Desert of Egypt, 535.

Polymorphina amygdaloides, 715 ; P. communis, 716; P. compressa, 716 ; P. eoncava var. dentimarginata nov., 717 & pl. xxxiv. ; P. frondicu- larioides, sp. nov., 716 & pl. xxxiv. ; P. gutta, 715; P. oblongs, 716; P. regina, 717 ; P. rhabdogonioides, sp. nov., 716 & pl. xxxiv. ; P. soro- ria vat. cuspidata, 715.

Polystomella aculeata, 724. Polyzoa from Inferior Oolite of Ship-

ton Gorge, 72 & pls. ii.-iv. ; from Middle Lias of King's Sutton, 79 & pls. v.-vii.

Portmge Flags (Pennsylvania), eone- in-~one in. 732.

Portland Beds, j unction with Purbeck at Chilmark, 48 ; at Wockley, 49.

Potluck (Derbyshire), 611; pseudo- morphs after olivine, 613.

Pre-Devonian in Matto Grosso, 88. Prestwieh, J., portrait presented by,

Proc. 2. Prilchard, :Rev. C., obituary, Proc. 42. Protoearis ~larshi, 413. Pseudomorphs after olivine, 613, 614. Pulvinulina elegans, 723; P. Kar-

steal, 723; P. punctulata, 723; P. Schreibersii, 723.

Purbeck Bedsof the Vale of Wardour, 44; diagram showing vertical suc- cession, 64; comparison with those of Dorset, 65 ; list of fossils, 68.

Purtiall (Deccan), siliceous pebble from, 381 & pl. xix.

Pyroxene, rhombic, in Derbyshire lavas, 620.

Pyroxenite of Brandberget, analysis, 31.

Quartz-enclosures in lava of Strom- boll, Proc. ~; quartz in Carrock Fell gabbro, 318; quartz-vein in tufts near Meldon, 349; perlitic cracks in quartz, 367 & pl. xviii. ;

u 5o.] OENERAL INDEX, 751

quartz-reefs in Silurian of Bath urst, 113.

Quartzites, origin of some, 377 & pl. xix. ; classification of, 380; auriferous, from 1%ndweni, 388, 389.

Quartzitic induration of surface-rocks, Prec. 7.

Quaternary in Matte Grosso, 98.

Radiolarian phthanites in Cottian Alps, 268, 269.

RaintM1 in Equatorial East Africa, 529; in Pleistocene Egypt, 5t2, 5~3.

'Rain-spot ' breccia, near Llyu Padarn, 591.

:Raisin, Miss C. A., & T. G. Bonncy, on Relations of Older Fragmental :Rocks in :N.W. Caernarvonshire, 578.

Ramulina globulifera, 717. ]~a~ta temporaria, 189 & pl. x. Ranff~fer (---=Cervus) tarandas, 199 &

pl. xi. Rauchwacke in Lepontine Alps, 288

et seqq. Ravensdale Cottage (Derbyshire), tuff.,

630. Realp (Switzerland), section near, ~.

293. Red Beds in S. Africa, 551. :Report of Council for 1893, Prec. Io;

of Library & Museum Committee, Prec. lz ; financial, Prec. z6.

Rhmtic ostracoda of Britain, 156 & pl. ix.

-Rhinoceros antiquitatis, 198 & pl. xi. :Rhyolites of Was Tot, 363; of

Tardree, 368; of Builth district, 573.

Richmond (Surrey) boring, Neocomian limestone from, 685, 6~6.

Ridge (Wilts) section described, 51.

Riebeckite in granophyre of Skye, 219. River-terraces, age of, 449. Rizama Sandstone, 93. Romford (Essex) map of district,

444 ; section near, 445. Rosa, W. ,}'. C., on the Geology of

Bathurst (N.S.W.), 105. Rotalia Beccarii, 724. Russbachthal (Salzkammergut), Gosau

Beds in, 128. Rutley, F., on the Sequence of Perlitie

& Spherulitic Structures, 10 & pl. i. ; on the Origin of, certain Novaculites and Quartzites, 377 & pl. xix.

Saiga antelope at Twiekenham, 459, 4fi0, 462.

Sand (Pleistocene) at Twickenham, analysis, 457.

Sandy Braes (Antrim), perlitic pitch- stone from, 367 & pl. xviii.

Sandy Dale (Derbyshire), 62l. Santa Cruz, Barfs dos Bugres (Brazil),

section near, 9t. Sue hirsuta, 417. Sawyer. A. R., on rock-specimens from

South Africa, Prec. I44. Saxicola 6~'aanthe (?), 191 & pl. x. Schists, conversion of compac~ green-

stones into, 279. Scotland, petrolo~cal papers on,

smumarized, Prec. Io7. Scotophilus pipistrelhJs (?), 193. Selima Oasis (Libyan De~rt) , wells

in, 539. Serpentine, altered, in Cottian Alps,

244, 249; pre-Tria~ic ill Monte Chaberton area, 307; aluminous, of Was Tor, 363.

Shap granite, _Prec. II 9 et seq?. Shingle Hill (Kent), section to Cot-

man's Ash, 174; section to Hurst Wood, 174.

Shipton Gorge (Dorset), polyzoa from Inferior Oolite of, 72 & pls. ii.-iv.

Shode Valley, ossiferous fissures in, 171 ; sections, 174, 175 ; history of, 172.

Shrewley (Warwickshire), discovery of molluscs in Upper Keuper, 170.

Shrubsole, G. W., obituary, l~roc. 47.

Silieifled wood in Libyan Desert, 534, 536; origin of, 545, 547; in Red Beds of S.E. Africa, 552 ; silieified oolite, 92.

Silurian rocks, papers on, summarized, _Prec. 78; Silurian of Bathurst (N.S.W.), l l l .

Skye, relations of gabbro & granophyro in, 216 et seqq. ; banded structure of Tertiary gabbros in, 645 & pls. xxvi.-xxviii.

Sligachan, Glen (Skye), 218 et seqq. Snow, disappearance by melting &

evaporation, 48 I. Snow-drift, deposits from, 472; form-

ation of, 475; hardening of, 479; fine texture of deposits, 482; ab- sence of stratification, 482.

SSlvsberget (Norway), olivine-gabbro- diabase, analyses, 19, 20; geol. structure of the hill, 21; pyro- xenites, etc. of, 33, 34.

Soret's principle discussed, 3'26. /Sorer pygm~as, 192 & pl. xi. ; S. trap

garis, 192 & pl. xi. Sourton Tors (Devon), tuff's, felsites,

etc. of, 338; map, 339.

752 G E N E R A L I N D E I . [Nov. I894 ,

South :Down (Devon), talcs-diorite of, 3"50; granite-outcrop, 350.

South Joggins (Nova Scotia), Coal- measure shells from, 437 & pl. xx.

Special General Meeting, l)roc. 15o. Specific gravities as a test of relativo

basicity of gabbro, 321. Spencer, J., obituary, Prov. 5I.

Spermophilus, 194. Spheroidal structure in rocks at

Grange Mill, 634. Spherulites in Skye granophyre, 22.0,

221. Spherulitie and perlitic structures,

sequence of, 10. Spiroplecta annectens, 700; S. bifor-

mis, 700. Sponge spicules, in Bargate Stene,

680, fi83. St. Lucia Bay (S.E. Africa) section to

Mont-aux-Sources, Drakensberg, pl. xxii ; anthracite at, 553.

St. Martha's Chapel (Chitworth), Bargate Beds near, 681.

Staden Low (Derbyshire), 620. Strahan, A., Wollaston Fund award to, �9 Proc. 34- Striated stones in Permian breccias,

466; rocks on Mount Kenya, 520. Stromboli, quartz-enclosures in lava

st, Proc. z, Stur, D., obituary, Proc. 55. Surface metamorphism in S. Aus-

tralia, t5.oc. 7. Sus scrofa, 200. Susa (Italy), 245. Swain, E., ~resentation of R. Owen's

portrait, z'roc. 14z.

Table Mountain Sandstono in S.E. Africa, 555.

Taboleiros (Matto Grosso), sandstone of the, 98.

Taddington Field (Derbyshire), 610. Talpa eur.op~ea, 192. Tan-y-gralg (Radnorshire), section

south of, 572. Tapirapuam Hills (Brazil), section to

Cuyab~, 89. Tardree (Antrim), rhyolite of, 367,

368. Teall, J. g. ]=[., & Sir A. Geikie, on

Banded Structure of Tertiary Gab- bros iu Skye, 645 & pls. xxvi.-xxviii.

Teffont Evias (Wilts), sections near, described, 53, 55.

Terrace, the, E. of Draken~berg (S. Africa), 549.

Terraces in Thames Valley, 448 et seqq. Tertiary volcanic series of Inner 1Lie-

brides, relations of basic & acid

rocks, 212 & pls. xiii.-,iv. ; Tertiary gabbros in Skye, banded structure of, 645 & pls. xxvi.-xxviii.

Textularia agglutinans, 699; T. gra- men, 698 ; T. minuta, 698 ; T. pr~e- longs, 698; T. sagittula, 698; T. trochus, 699 ; T. turris, 699.

Thames Valley Beds, relation to Boulder Clay, 448 et ~qq. ; Pleisto- cene deposits in Thames Valley at Twickenham, 453.

Thompson, B., on Landscape Marble, 393.

Thrust-planes in the N.W. ttighlands, Proc. 9 o.

Tissington (Derbyshire), 610. Titaniferous iron-oxides concentrated

in highly basic rocks, 318, 323, 324. Toadstone, derivation of term, 604. Torridon Sandstone, Pivc. 94. Trachytes of Sourton Tors, :345. ' Trap-amygdaloids' in S. Africa, 551. Triar)hrus Beckii, with antenna, 425,

426. Trias (?) in Mutts Grosso, 97. Trilobites, systematic position of the,

411 ; formation of head-shield, 413, 417 ; bending-round of 1st cephalic segment, 416 ; eyes in, 4:~0 ; dorsal organ in, 422 ; anus in, 424 ; limbs of, 424 ; classification, 4~0.

Tritaxia tricarinata, 6~J. Trochammina s~uamata, var. limbata

nov., 697 & pl. xxxiv. Tropidonotus natrix, 190. Truncatul inafalcata, 721 & pl. xxxiv ;

T. Haidingerii, 722; T. lobatula, 721; T. variabilis, 721; T. Wuel- lerstorfi, 722.

Tufa deposits in S. Africa, 564. Tufts, volcanic, of Sourtou Tom, 340 ;

of Meldon, 347 ; of West Okement River, 349, 351 ; ' corduroy' struc- ture in, 351; Carboniferous, of Derbyshire, microscopical struc- ture, 603 & pls. xxiv.-xxv.

Turnford boring, [08. Twickenham (Middlesex), Pleistocene

deposits at, 4,53 ; sections, 455, 456. Tyndall, J., obituary, t)roc. 4 I.

Unconformity, alleged, E. of Llyn Padarn, 568 ; section. 592.

Underground-ice tbrmation, origin of, 485.

Upminster (Essex), sections seen on railway to Romford, 443.

Ursus arHos (?), 201 & pl. xii. Uructhn (Brazil), crystalline rocks at,

88 ; iron & manganese ores at, 99.

Vol. 50.] GENERAL I N D E X . 753

Vaginulina arguta, 710 ; V. legumen, 710; ~ neocomiana, ep. nov., 711 & pl. xxxiv. ; V. sparsicostata, 710,

Val Bedretto, rocks in the, 299. Val Canaria, rocks in the, 297. Valley-glaciers, 515. Valvulina conica, 701 ; V. ft, sca, 70l. Variolites, papers on, summarized,

Proc. i2 4. Veetian Sand in Vale of Wardour, 62. Verneuilina triquetra, 699. Vertebrates, fossil, fr, pm Argentina,

~roc. 146; vertebrate fauna from Ightham fissure, 188 & pls. x.-xii.

Ves#ertilio 2Vagtereri, I92 & pl. xi. Vilanova y Piers, J., obituary, Prec.

54-- Vipers (Pelias) berus, 190 & pl. x. Virgulina subdepressa, 704; V. sub-

squamosa, 703. Voicanie series, Tertiary, in Inner

Hebrides, relations of basic and acid rocks, 212 & pls. xiii.-xiv.

Vonzo (Cottian All~s), 241. Vredefort (Orange Free State), sec-

tion to Hartebeest-Fontein, pl. xxiii.

Wadi Halls (Egypt), 533 e/seqq. Wadi ~'atrun (Egypt), Miocene of,

536. Waldensian Gneisses, 232-239; sketch-

map of distribution, 238. Walford, E. A., on Bryozoa from In-

ferior Oolite of Shipton Gorge (Dorset), 72 & pls. ii.-iv. ; on Chei- lostomatous Bryozoa from the Middle Lias, 79 & pls. v.-vii.

Wardour, Vale of (Wilts), Purbeek Beds, 44; geological map of dis- trict, 47.

Ware (Hefts), boring near, 501 ; de- scription of samples from, 503; classification of beds, 506.

Was Tot (Devon), rhyolite, etc., o5 362.

'Wash-outs ' in coal-seams, Prec. 64. Wmer, from Winkfield boring, clio

mical analysis, 501..

Water-supply in Libyan Desert, in relation to anti,'linal folds, 537; in Lower Greensand south of Windsor, 153, 155.

Watts, W. W., occurrence of" perlitie cracks in quartz. 367 & pl. xviii.

Wenlock Beds in Ware boring, 507. West Okement River (Devon), tufts,

etc., 347. Whitaker, W., & A. J. Jukes-Browne,

on Deep Borings at Culford & Winkfield, with Notes on those a~ Ware & Cheshunt, 488.

Whitby (Yorks), Ammonites subar- matus from, Prec. 4.

Windsor Forest (Berks), artesian boring near, 152, 496.

Winkfield (Berks) deep boring at, 496 ; water from the, 499 ; chemical analysis ot" same, 501.

Woekley (Wilts), section described, 49.

Wollaston Fund award to A. Strahan, Prec. 34.

Wollaston Medal awarded to :K. A. yon Zittel, 1)roe. 3z.

Wollaston Medallists, list of, Prec. z I ; recipients of awards from fund, Prec. 22 .

'Wonder Holes' (water-holes) in Malmani dolomite, 5fi3.

Wood, silicified, in Libyan Desert., 534. 536; origin of, 545; in Red Beds of S.E. Africa, 552.

Woodbury Hill, Permian breccias of, 466, 467.

Woods, l:f., on I ~ e o u s Rocks of neighbourhood of Builth, 566.

Yellowstone Park (U.S.A.), perlitic & spherulitie structures in rocks from, 11 & pl. i.

Yukon district, (Canada), mammoth- remains in, 1.

Zittel, K. A. yon, Wollaston Medal awarded to, Prec. 32.

OF YOL. L.

Printed by TAxLo~ ~,~D FRANCIS, Red Lion Court, Fleet Street.