14
27 February 1959, Volume 129, Number 3348 AMERICAN ASSOCIATION FOR THE Plun ADVANCEMENT OF SCIENCE Board of Directors A pi PAUL E. KLoPsTw, President who w CHAUNcEY D. LEAKE, President Elect study WALLACE R. BRODE, Retiring President Scienc H. BENTLEY GLAss GEORGE R. HARRISON MARGARET MEA univer THOMAS PARK Associ DON K. PNIC first ye MINA REES ties i WILLIAM W. RUBEY fell~ ALAN T. WATEMANfellow PAUL A. SCHEMER, Treasurer Final DAEL WOLFLE, Executive Officer 25 MC In DAEL WoLFL, Executive Officer maticr GaRAHM DUSHANx, Editor univei Bows Tusom, Assistant Editor basis, ROBERT V. ORMES, Assistant Editor his p1 Editorial Board natior DONALD J. HUGHES H. BURR STEINBACH institu KONRAD B. KaAusKopF WILLIAm L. STRAUS, JR. the N EDWIN M. LENER EDWARD L. TATUM differ( Editorial Staff di a SARAH S. DEES, LUCILLE GUINARD, NANCY S. pad HAMILTON, WILLIAM HASKELL, OLIVER W. HEAT- travel woLE, YUKIE KOZAI, JUDITH B. LEVIN, ELLEN Th E. MURPHY, BrrsAE PEDERSEN, MADELINE SCIINEIDER, NANCY L. TEIMOURIAN, MARIA A. tutes, WOLSAK. their EARL J. SCHERAGO, Advertising Representative be pai focus SCIENCE, which is now combined with THE phy o SCIENTIFIC MONTHLY, is published each Fri- izes t. day by the American Association for the Advance- ment of Science at Business Press, Lancaster, Pa. progr The joint journal is published in the SCIENCE format. Entered at the Lancaster, Pa., Post Office institt as second class matter under the Act of 3 March Inil 1879. SCIENCE is indexed in the Reader's Guide may to Periodical Literature. Editorial and personnel-placement correspond- mer ence should be addressed to SCIENCE, 1515 from Massachusetts Ave., NW, Washington 5, D.C. Manuscripts should be typed with double spacing300, and submitted in duplicate. The AAAS assumes no If responsibility for the safety of manuscripts or for the opinions expressed by contributors. For de- princi tailed suggestions on the preparation of manu- scripts, book reviews, and illustrations, see Scienceer 125, 16 (4 Jan. 1957). choos Display-advertising correspondence should be Th addressed to SCIENCE, Room 740, 11 West 42 en St., New York 36, N.Y. conta Change of address notification should be sent to 1515 Massachusetts Ave., NW, Washington 5, D.C., Coursi 4 weeks il advance. If possible, furnish an address appli stencil label from a recent issue. Be sure to giv those both old and new addresses, including zone num- -Ior, if-any. prove Annual subscriptions: $8.50; foreign postage, back $1.50; Canadian postage, 750. Single copies, 35¢. Tli Cable address: Advancesci, Washington.h SCIENCE ns for the Teacher irogram of Summer Fellowships for secondary-school science teachers vant to increase their understanding of science through independent at colleges or universities is being started this year by the National ce Foundation. The new program supplements the now-familiar Sum- Institutes, which are also sponsored by NSF but in which colleges or rsities plan courses of study for groups of teachers. The American iation for the Advancement of Science is administering at cost the ear of the Summer Fellowship program. Administrative responsibili- nclude selecting a panel of scientists to judge the applications for *ships and transmitting the recommendations of the panel to NSF. decisions will be made by NSF, and the awards will be announced on arch. the new program a fellow may carry out a plan of study in mathe- rs or in the physical or biological sciences at any accredited college or rsity in this country. Besides competing for fellowships on a national a participant must gain admission to a college or university at which [an can be carried out. In the Summer Institute program, there is no nal competition. The teacher applies to one of the institutes, and the ates, in turn, are set up by colleges and universities on grants from Tational Science Foundation. Although the method of financing is ent, in both programs the teacher-participant ends up with his tuition and a stipend of up to $75 a week plus allowances for dependents and Lepurpose of the Summer Fellowships, like that of the Summer Insti- is to enable teachers of science to become better teachers by increasing understanding of science. Although an applicant's plan of study may rt of his efforts to get an advanced degree in education, the plan must on a branch of mathematics or science, not on the history or philoso- )f education or on methods of teaching. This emphasis also character- the other programs in education sponsored by NSF, which include ams for elementary-school teachers and college teachers and for utes that are held during the academic year. itial plans for the Summer Fellowships call for 750 awards, which cover up to three successive summers of study. The number of Sum- Institutes open this year to secondary-school teachers will increase the 121 open in 1958, averaging 50 teacher-participants each, to over with awards being for one summer of study. the Summer Institute program proves effective, it could become the ,ipal means by which the National Science Foundation supports sum- study by teachers. With funds going directly to them, teachers can se their courses from the fare offered by colleges and universities. e will be no need for special institutes, and the teachers will have more .ct with the general body of students studying science. The future se of the new program will be determined in good part by whether icants for Summer Fellowships succeed in producing plans as good as offered by the Summer Institutes. It may be that the fellowships will c suitable only for teachers of superior ability or for teachers whose ground or interests call for unusual programs. ie National Science Foundation, and ultimately Congress, deserve our ks for creating new opportunities for summer study, but then the ers also deserve our thanks for seeking to increase their understanding ience.-J.T.

SCIENCE...,ipal means by which the National Science Foundation supports sum-study by teachers. With funds going directly to them, teachers can se their courses from the fare offered

  • Upload
    others

  • View
    2

  • Download
    0

Embed Size (px)

Citation preview

  • 27 February 1959, Volume 129, Number 3348

    AMERICAN ASSOCIATIONFOR THE Plun

    ADVANCEMENT OF SCIENCE

    Board of Directors A pi

    PAUL E. KLoPsTw, President who w

    CHAUNcEY D. LEAKE, President Elect studyWALLACE R. BRODE, Retiring President SciencH. BENTLEY GLAssGEORGE R. HARRISONMARGARET MEA univerTHOMAS PARK AssociDON K. PNIC first yeMINA REES ties iWILLIAM W. RUBEY fell~ALAN T. WATEMANfellowPAUL A. SCHEMER, Treasurer FinalDAEL WOLFLE, Executive Officer 25 MC

    In

    DAEL WoLFL, Executive Officer maticrGaRAHM DUSHANx, Editor univei

    Bows Tusom, Assistant Editor basis,ROBERT V. ORMES, Assistant Editor his p1

    Editorial Board natiorDONALD J. HUGHES H. BURR STEINBACH instituKONRAD B. KaAusKopF WILLIAm L. STRAUS, JR. the NEDWIN M. LENER EDWARD L. TATUM

    differ(Editorial Staff di a

    SARAH S. DEES, LUCILLE GUINARD, NANCY S. padHAMILTON, WILLIAM HASKELL, OLIVER W. HEAT- travelwoLE, YUKIE KOZAI, JUDITH B. LEVIN, ELLEN ThE. MURPHY, BrrsAE PEDERSEN, MADELINESCIINEIDER, NANCY L. TEIMOURIAN, MARIA A. tutes,WOLSAK. their

    EARL J. SCHERAGO, Advertising Representative be paifocus

    SCIENCE, which is now combined with THE phy oSCIENTIFIC MONTHLY, is published each Fri- izes t.day by the American Association for the Advance-ment of Science at Business Press, Lancaster, Pa. progrThe joint journal is published in the SCIENCEformat. Entered at the Lancaster, Pa., Post Office instittas second class matter under the Act of 3 March Inil1879. SCIENCE is indexed in the Reader's Guide mayto Periodical Literature.

    Editorial and personnel-placement correspond- merence should be addressed to SCIENCE, 1515 fromMassachusetts Ave., NW, Washington 5, D.C.Manuscripts should be typed with double spacing300,and submitted in duplicate. The AAAS assumes no Ifresponsibility for the safety of manuscripts or forthe opinions expressed by contributors. For de- princitailed suggestions on the preparation of manu-scripts, book reviews, and illustrations, see Scienceer125, 16 (4 Jan. 1957). choos

    Display-advertising correspondence should be Thaddressed to SCIENCE, Room 740, 11 West 42 enSt., New York 36, N.Y. contaChange of address notification should be sent to

    1515 Massachusetts Ave., NW, Washington 5, D.C., Coursi4 weeks il advance. If possible, furnish an address applistencil label from a recent issue. Be sure to giv thoseboth old and new addresses, including zone num--Ior, if-any. prove

    Annual subscriptions: $8.50; foreign postage, back$1.50; Canadian postage, 750. Single copies, 35¢. TliCable address: Advancesci, Washington.h

    SCIENCE

    ns for the Teacherirogram of Summer Fellowships for secondary-school science teachersvant to increase their understanding of science through independentat colleges or universities is being started this year by the Nationalce Foundation. The new program supplements the now-familiar Sum-Institutes, which are also sponsored by NSF but in which colleges orrsities plan courses of study for groups of teachers. The Americaniation for the Advancement of Science is administering at cost theear of the Summer Fellowship program. Administrative responsibili-nclude selecting a panel of scientists to judge the applications for*ships and transmitting the recommendations of the panel to NSF.decisions will be made by NSF, and the awards will be announced onarch.the new program a fellow may carry out a plan of study in mathe-rs or in the physical or biological sciences at any accredited college orrsity in this country. Besides competing for fellowships on a nationala participant must gain admission to a college or university at which

    [an can be carried out. In the Summer Institute program, there is nonal competition. The teacher applies to one of the institutes, and theates, in turn, are set up by colleges and universities on grants fromTational Science Foundation. Although the method of financing isent, in both programs the teacher-participant ends up with his tuitionand a stipend of up to $75 a week plus allowances for dependents and

    Lepurpose of the Summer Fellowships, like that of the Summer Insti-is to enable teachers of science to become better teachers by increasingunderstanding of science. Although an applicant's plan of study mayrt of his efforts to get an advanced degree in education, the plan muston a branch of mathematics or science, not on the history or philoso-)f education or on methods of teaching. This emphasis also character-the other programs in education sponsored by NSF, which includeams for elementary-school teachers and college teachers and forutes that are held during the academic year.itial plans for the Summer Fellowships call for 750 awards, whichcover up to three successive summers of study. The number of Sum-Institutes open this year to secondary-school teachers will increasethe 121 open in 1958, averaging 50 teacher-participants each, to overwith awards being for one summer of study.the Summer Institute program proves effective, it could become the

    ,ipal means by which the National Science Foundation supports sum-study by teachers. With funds going directly to them, teachers canse their courses from the fare offered by colleges and universities.e will be no need for special institutes, and the teachers will have more.ct with the general body of students studying science. The futurese of the new program will be determined in good part by whethericants for Summer Fellowships succeed in producing plans as good asoffered by the Summer Institutes. It may be that the fellowships will

    c suitable only for teachers of superior ability or for teachers whose

    ground or interests call for unusual programs.ie National Science Foundation, and ultimately Congress, deserve ourks for creating new opportunities for summer study, but then theers also deserve our thanks for seeking to increase their understandingience.-J.T.

  • IN PHOTOMICROGRAPHY,

    V.1 rel :U. £1.1 :&.iU I.E :EI.MEI.1 I 1

    (Complete Triocular Microscope, or interchangeable Triocularbody, available in B&L Dynoptic Laboratory and ResearchMicroscope models.)

    r SEE FOR YOURSELF, IN YOUR OWN LAB * MAIL COUPON NOW -BAUSCH & LOMB OPTICAL CO. I75938 St. Paul Street, Rochester 2, N. Y. I

    I Send me B&L Dynoptic Triocular Microscope CatalogD1084. ISchedule a demonstration, in my lab, at my convenience.

    Name, Title.....................................................................................

    Professional address.......................................................................

    .......................................................................................................

    l ....................................................................................................... l

    .....................................................

    for example, when the third eye isthat of the camera, the new B&LTriocular Microscope quickly givesvisual and photographic results insharp detail and vivid contrast.Combines comfortable binocularvision with a photographic tube;you scan, orient and focus in theusual way. To take a picture, justglance at the Camera Viewer fortouch-up focus and CLICK! That'sall there is to it! You photographwhat you see-and you see today'sbrightest images.

    IN CONSULTATION,the B&L Triocular lets you and acolleague study the same subject,through the same microscope, at thesame time. And you can get amplelight for simultaneous viewing ofnormally hard-to-see images: phasecontrast, dark-field, deeply stainedspecimens. You've got everythingyou need, right on the spot, fordaily, practical applications rang-ing from instruction to researchcollaboration.

    SCIENCE, VOL. 129

  • For laboratory and pilot plant application* Aerobic or Anerobic Fermentations * Tissue Cultures

    * Other Metabolic Studies in Submerged Cultures

    Holds 6 FERMENTORS-stainless steel with pyrexjars of capacities 5, 7.5 or 14 liters each; readilyremovable for autoclaving; special leak-proof, non-freezing ball bearing agitator housings.

    Stainless steel baths, thermostatically controlled within+ 1/2°C. Twin, anti-friction drives afford wide range ofagitation and aeration rates.Machine available with automatic anti-foam addition sys-tem. Single fermentor and 3-fermentor drive assembliesalso available.

    Write for Bulletin FS-S279

    NEW BRUNSWICK SCIENTIFIC CO.~~~~S ':*' **

    P.O. BOX 606 * NEW BRUNSWICK, N. J.

    l~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    27 FEBRUARY 1959

    A Portion of theSigma Reagent CatalogOne of a series of advertisements which will reproduce thecomplete list. Complete list available promptly on request.

    PHOSPHATASE ACID (pfs)PHOSPHATASE, ALKALINE, "Purified"

    Calf, Soluble salt-free 150-200 Bodanskyunits/mg.

    PHOSPHATASE, ALKALINE, Crude (pfs)PHOSPHATASE, SERUM, Determination of

    Per Tech. Bulletin No. 104 @ 410 m.Using p-nitrophenyl phosphate.

    PHOSPHATASE, SERUM, Determination ofUsing o-Carboxyphenyl phosphate @ 280 m~&.See listing of o-Carboxyphenyl phosphate.

    PHOSPHATE BUFFER0.1M, pH 7.5 Stock No. 410-30.1 M, pH 7.8 Stock No. 340-200.075M, pH 6.8 Stock No. 105-9

    PHOSPHOCREATI NESodium Salt Hydrate90-98% pureCalcium Salt Hydrate90-98%

    PHOSPHO (ENOL) PYRUVIC ACID, Cryst.Silver-Barium Salt, TricyclohexylamineSalt, or other as available (pfs)

    6-PHOSPHOGLUCONATEBarium Salt

    Sodium Salt

    1 gram 7.001 gram 15.00

    500 mg 9.00

    1 gram 6.50Inquire fordetails

    16fI.oz. 4.5016 f1. oz. 4.5016 fI oz. 4.50

    1 gram100 mg

    1 gram100 mg

    1 gram500 mg100 mg

    1 gram100 mg500 mg50 mg

    6-PHOSPHOGLUCONIC DEHYDROGENASE 20 uritsApproximately 200 units per gram. When 5 unitsavailable. Other activities in proportion.

    2-PHOSPHOGLYCERIC ACID (pfs) 1 gram3-PHOSPHOGLYCERIC ACID, Cryst. 5 grams

    Barium Salt hydrate (pfs)3-PHOSPHOGLYCERIC ACID Calcium Salt II3-PHOSPHOGLYCERIC PHOSPHOKINASE

    From Yeast, Cryst. IPHOSPHOPYRUVATE KINASE ItPHOSPHORYLASE, 2 x Cryst. (pfs) 10rmg

    Suspension, 1200 units/mg. (Subject to availability)PHOSPHORYL CHOLINE CHLORINE, Barium, 1 gram

    Synthetic, or Natural. As available. 250 mgPIG HEART ACETONE POWDER 1 0 gramsPIGEON LIVER ACETONE POWDER 1 gramPOTASSIUM HYDROXIDE, ALCOHOLIC

    Stock No. 490-11 250 mlPREGNANDIOL (pfs) 1 gram

    Pregnan-3a, 20a Diol 250 mgPREGNANDIOL-3a, 20a (allo) (pfs) 1 gramPREGNANE- 1 7a-21 -DIOL-3,20-DIONE-21-ACETATE (pfs) 100 mg

    PREGNANE-1 7a-21 -DIOL-3,1 1,20-TRIONE-21-ACETATE (pfs) 100 mg

    PREGNANEDIOL GLUCURONIDATE, Sodium 100 mgSalt, Sigma Spectrophotometer Standard. 50 mgFrom Human Pregnancy Urine 25 mg

    PREGNANEDIONE (pfs) 1 gramPREGNENOLONE (pfs) 1 gramPREGNENOLONE ACETATE (pfs) 1 gramPREGNENOLONE 3-MTHYL ETHER (pfs) 1 gramPROGESTERONE USP (pfs) 1 gramPURINE (pfs) 100 mgPUTRACINE di HCI or FREE BASE (pfs) 1 gramPYRIDOXAL PHOSPHATE (5') 1 gram

    (Codecarboxylase) (pfs) 98-99% 100 mg

    TELEPHONE COLLECTfrom anywhere in the worldDay, Station to Station, PRospect 1-5750Night, Person to Person,Dan Broida, WYdown 3-6418

    The Research Laboratories of

    SIGMA

    30.005.70

    20.004.2570.0042.0013.00

    50.009.00

    57.0010.2532.2512.25

    85.004.00

    nquire

    nquirenquire15.00

    18.005.005.003.00

    2.2510.003.60

    10.00

    4.00

    4.0055.2530.2517.758.752.752.505.002.503.003.50

    75.0016.25

    M.'

    CHEMICAL COMPANY3500 DEKALB ST., ST. LOUIS 18, MO., U. S. A.

    MANUFACTURERS OF THEFINEST BIOCHEMICALS AVAILABLE

    57-

    573

    MEDICALIA~PC~IMICROSCOPES

    CHICAGO, U.S.A.Most reasonably priced GUARANTEED

    Microscope on the market.

    Made in West Germany

    NEW DESIGNEXCLUSIVE

    SAFETY FEATURESHIGH QUALITY OPTICS

    GRADUATEDMECHANICAL STAGE

    TEN YEAR GUARANTEE

    $257.00WITH CASE

    Write for cataloguelisting safety features

    10% Discount on 5 or more.Models may be assorted to ob-tain this discount

    TRANSPORTATIONINCLUDED

    THE GRAF-APSCO CO.5868 BROADWAY CHICAGO 40, ILL. I

  • Laboratories have found hundreds of uses for this ruggedly-built, gallon-size Waring Blendor. It does everything frommacerating plant material to blending detergent-motor oils. . .everything from mixing pigments to grinding tissue.Most operations take only a few seconds! At top speed, theheavy-duty motor whirls stainless steel blades at 14,500 rpm.The stainless steel container is contoured for highest effi-ciency; has an easy-pour hand'e and gasketed clamp lid withsampling section.

    Save time. Save effort. Save money. Make this versatileModel CB-3 an important part of your standard laboratoryequipment. It requires only a 9-inch square space and stands23 inches high. The 1.5 hp heavy-duty motor is lifetimelubricated-operates on 115 volts, 60 cycles, single phase.

    Push-button speed selectors for 14,500-12,000-9,000 rpm.

    Name your blending problem. Waring engi-neers will gladly help you solve it.

    NOW AVAILABLE SEPARATELY-371h oz.stainless steel container that withstands rough han-dling. For standard Waring Blendor.

    WARING PRODUCTS CORPORATION25 West 43rd St., New York 36, N. Y.Subsidiary of Dynamics Corporation of America

    GENTLEMEN:

    Send me specflcations on the Gallon-Size Waring Laboratory Blendor.

    NAME

    TITLE

    COMPANY

    Crystals are not just a sideline at ISOMET.Years of research and development have en-abled us to produce consistently the highestquality crystals obtainable and at attractiveprices. We go all out to serve you with

    HIGHEST QUALITYATTRACTIVE PRICES * PROMPT DELIVERY-three good reasons why leading spectro-scopists everywhere are turning to ISOMET fortheir crystal needs. Why don't you try us onyour next order.

    NaCI, KBr, KCI, KI, CsBr, Csl, BaF2, MgORough blanks, polished windows, prisms, special shapes.

    Standard liquid and gas cells; special cells.Repair and polishing service for cells and windows.

    KBr Pellet Powder.

    OPzggTSt~tS~tWRITE TODAY for price list andfree Technical Bulletin No. 1577.

    SCIENCE, VOL. 129

    GLASS ABSORPTION

    CELLS madeKLETTm

    SCIENTIFIC APPARATUSKlett-Summerson Photoelectric Colorimeters-Colorimeters - Nephelometers - Fluorimeters-Bio-Colorimeters - Comparators - Glass Stand-ards-Klett Reagents.

    Klett Manufacturing Co.179 East 87 Street, New York, New York

    ADDRESS

    CITY/ZONE STATE _ l

    574

  • The world's widest rangeof Radiochemicals comesfrom Amersham

    Proc'ss Buildingsat Amersham

    Each year at the Radiochemical Centre

    we prepare over five hundred labelled

    compounds incorporating some twenty

    different isotopes. Of carbon-I4 alone

    over two hundred compounds are

    available, mostly from stock. Our range

    covers all the important tracer isotopes

    -S-35, P-32, 1-I3i, T-3, Cl-36, etc.We cater for many interests-for biolo-

    gists with labelled steroids, sugars,

    amino acids, carcinogens, vitamin BI2,etc.-for industrial chemists with

    labelled weedkillers, pesticides, fertil-

    isers, detergents.

    To all tracer users we are pleased to

    offer advice-and often to make special

    labelled materials for their use. Write

    to Amersham for our general lists or

    tell us about your particular problem.

    THE RADIOCHEMICAL CENTRE

    AMERSHAM, BUCKINGHAMSHIRE, ENGLAND

    TAS RC.3027 FEBRUARY 1959

    New WARING LABORATORYBLENDOR BASE

    for use inHAZARDOUS LOCATIONS

    Wherever hazardous lab atmospheres exist, youcan safelyblend materials at high speed-even on your toughest re-search and development projects. This new Waring Labora-tory Blendor provides the protection of a 1/5 hp explosion-proofGE motor which carries a Class 1 -Group D rating.Two speed explosion-proof switch also available.

    The Waring explosion-proof base (Model EP-1) accom-modates the standard 3712 oz. Pyrex container. Same ca-pacity stainless steel container Model SS-510 (pictured)comes with lid and stainless steel cutting assembly; meetsevery requirement of the severest lab service.

    Blend fast ... blend thoroughly . . . blend safely. Whenyou invest in a Waring Explosion-Proof Blendor Base, youcan be sure you have the ultimate in the elimination oflaboratory fire hazards.

    WARING PRODUCTS CORPORATION25 West 43rd St., New York 36, N. Y.Subsidiary of Dynamics Corporation of America

    - --- -SEND FOR FREE LITERATURE- -

    I GENTLEMEN:I want full specification data on the new Explosion-Proof Waring Laboratory Blendor Base.

    NAME

    TITLE|COMPANY

    ADDRESS

    CITY/ZO _TATE_|L.I__.1 _ _ _

    tU K*A*E *A lT

    N..A

    ,. 15 A.

    11

  • - Do you know . . .What's the distance

    modulus?And the escape velocityfrom Saturn?

    And the red shift?And the solar carbon cycle?And a Cepheid variable?And-You can find over 2,200 vitalfacts fast with the new-

    Dictionary ofAstronomyandAstronautiesby ARMAND N. SPITZCoordinator of Visual Satellite Observa-tions for the Smithsonian AstrophysicalObservatory, Cambridge. Mass.Arranged in handy dictionaryform and supplemented by nu-merous graphs and illustrations,here are concise definitions ofevery important term and con-cept relating to astronomy and

    _ astronautics. $6.00Philosophical Library, Publishers

    - 15 East 40 Street, New York 16

    IS YOUR GUESS

    WORTH $100?

    ENTERCONTESTTODAYsee our adon page 520of thefebruary 20thissue . . . or

    write fordetails

    U C1 L E- l` `-EE T7FR EJNI1C15

    / ~~~~~~~~~~~CO: FR F 2 FR FITIr C2

    2925 N. BROAD ST. PHILADELPHIA 32, PA..BALDWIN 6-2300E'xpog ...enatw: AD. AURIIEMA, INC., N.t Ykrl

    P.S.So uf rat the Atoli Fair, April 6-10Ct sieland Puwblic AuditoriU

    576 ih #01

    576

    MleetingsSocial Sciences

    The newly formed Associazione Itali-ana di Scienze Sociali, in conjunctionwith the Centro Nazionale di Preven-zione e Difesa Sociale, held the FirstNational Congress of Social Sciences atthe Palazzo Serbelloni-Cabiati in Milan,31 May to 2 June 1958.The association was formed about a

    year ago in response to a felt need foran organization that would facilitatecontact among all those who, in variousscientific disciplines, concern themselveswith the study of society, with specialregard to contemporary Italian societyand culture.The congress was divided into two

    distinct parts. The first (theoretical), onthe integration of the social sciences,considered the premises of the varioussocial sciences and the problem of theirinterdependence; the second (applied),on city and farm areas, dealt with thespecific problem of the relation betweenurban and rural populations, and withresearch already completed.The actual proceedings consisted of a

    presentation of short summaries of pa-pers that had been printed and gatheredin a large volume in time for distribu-tion at the congress. Following thesesummaries, the discussion was openedand took the greater part of the time.This made it possible both to study apaper carefully and to have sufficienttime to make a substantial contributionto the discussion.

    Speakers and discussants in the firstpart of the program addressed themselvesto the problem of definition and interde-pendence of the various social sciencesand the connection between these andphilosophy. Much interest was shown inbreaking out of the traditional academicboundaries, and a genuine effort wasmade to search for a fruitful approach.The debate raged, as was to be ex-pected, around whether "complemen-tarity" or "integration" (fusion) of thedisciplines would yield best results. Alsodiscussed at length were the relations ofthe social sciences to ethics and to phi-losophy. One of the speakers pointed outthat "it seems no longer true that phi-losophy tells the social sciences whatshould be done."The proceedings of the congress, and

    papers that were late, will shortly bepublished in a second volume.The congress was attended by a large

    number of people, from Italy and other

    countries, prominent in such fields associology, social anthropology, socialpsychology, economics, jurisprudence,social medicine, and philosophy.

    The president of the association isRenato Treves of the University ofMilan. Tullio Tentori, professor at theUniversity of Rome and director of theMuseo delle Arti e Tradizioni Popolariof Rome, is national secretary.

    RENATO TAGIURIGraduate School of BusinessAdministration, Harvard University,Boston, Massachusetts

    Forthcoming EventsMarch

    24. Admissions Policies to Serve theNeeds of the Community, symp., Cleve-land, Ohio. (B. G. Fricke, Univ. of Mich-igan, 120 Rackham Bldg., Ann Arbor.)

    27-28. Michigan Acad. of Sciences,East Lansing. (D. A. Rings, Univ. ofMichigan, Dept. of Engineering, AnnArbor.)

    27-28. Pennsylvania Acad. of Sciences,Gettysburg. (K. Dearolf, Public Museumand Art Gallery, Reading, Pa.)

    28. South Carolina Acad. of Sciences,Columbia. (H. W. Freeman, Dept. ofBiology, Winthrop College, Rock Hill.S.C.)

    29-3. Association for Childhood Edu-cation International, 1959 study conf., St.Louis, Mo. (ACEI, 1200 15 St., NW,Washington 5.)

    29-3. Latin American Congress ofChemistry, 7th, Mexico D.F., Mexico. (R.I. Frisbie, Calle Cipres No. 176, Zone 4.Mexico, D.F.)

    30-31. Third Teratology Conf., Port-land, Ore. (D. L. Gunberg, Dept. of Anat-omy, Univ. of Oregon Medical School,Portland.)

    30-1. American Orthopsychiatric Assoc., San Francisco, Calif. (M. F. Langer,1790 Broadway, New York 19.)30-12. Bahamas Medical Conf., 7th,

    Nassau. (B. L. Frank, 1290 Pine Ave., W.Montreal, Canada.)

    31-2. American Power Conf., 21st an-nual, Chicago, Ill. (N. S. Hibshman,AIEE, 33 W. 39 St., New York 18.)

    31-2. Symposium on Millimeter Waves.9th, New York, N.Y. (H. J. Carlin, Micro-wave Research Inst., 55 Johnson St..Brooklyn 1, N.Y.)

    31-4. National Science Teachers Assoc.,7th natl. conv., Atlantic City, N.J. (R. H.Carnton, NSTA, 1201 16 St., NW, Wash-ington 6.)

    31-5. International Committee of Mili-tary Medicine and Pharmacy, 21st sessionParis, France. (Comit6 International dtM~decine et de Pharmacie Militaires.Hopital Militaire, 79, rue Saint Laurent.Liege, Belgium.)

    April1-3. American Assoc. of Anatomists,

    Seattle, Wash. (B. Flexner, Univ. of Penn-sylvania Medical School, Philadelphia 4.)

    1-4. National Council of Teachers olMathematics, Dallas, Tex. (H. T. Karnes,Dept. of Mathematics, Louisiana StateUniv., Baton Rouge 3.)

    1-4. National Speleological Soc., 16thannual conv., Springfield, Mo. (0.Hawksley, Route 5, Warrensburg, Mo.)

    SCIENCE, VOL. 129

  • 1-4. Neurosurgical Soc. of America,Hot Springs, Va. (F. P. Smith, 260 Crit-tenden Blvd., Rochester, 20, N.Y.)

    1-29. World Meteorological Organiza-tion, 3rd session of congress, Geneva,Switzerland. (WMO, Campagne Rigot, 1,avenue de la Paix, Geneva.)

    2-3. Electrically Exploded Wires, conf.,Boston, Mass. (W. G. Chace, ThermalRadiation Laboratory, CRZCM, Geophys-ics Research Directorate, Air Force Cam-bridge Research Center, Bedford, Mass.)

    2-3. Southern Municipal and IndustrialWaste Conference, 8th, Chapel Hill, N.C.(University Extension Division, ShortCourses, P.O. Box 1050, Chapel Hill,N.C.)

    2-4. Association of American Geogra-phers, 55th annual, Pittsburgh, Pa. (J. E.Guernsey, 9707 Parkwood Dr., Bethesda,Md.)

    2-4. Association for Computing Ma-chinery, Cleveland, Ohio. (J. Moshman,Corporation for Economic and IndustrialResearch, 1200 Jefferson Davis Highway,Arlington 2, Va.)

    2-4. Optical Soc. of America, NewYork, N.Y. (S. S. Ballard, Dept. of Phys-ics, Univ. of Florida, Gainesville.)

    3-4. Eastern Psychological Assoc., At-lantic City, N.J. (C. H. Rush, StandardOil Co. of New Jersey, Rockefeller Plaza,New York, N.Y.)

    3-5. American Soc. for the Study ofSterility, Atlantic City, N.J. (H. H.Thomas, 920 S. 19 St., Birmingham 5,Ala.)

    3-5. Cooper Ornithological Soc., Berke-ley, Calif. (J. Davis, Univ. of California,Hastings Reservation, Jamesburg Route,Carmel Valley.)

    5-7. Vaccination against Tuberculosiswith Non-Living Vaccines, intern. symp.,Florence, Italy. (D. W. Weiss, Dept. ofBacteriology, Univ. of California, Berke-ley 4.)

    5-9. American College of Obstetriciansand Gynecologists, Atlantic City, N.J. (J.C. Ullery, 15 S. Clark St., Chicago 3, Ill.)

    5-9. International Acad. of Proctology,11th annual New York, N.Y. (A. J. Can-tor, IAP, 147-41 Sanford Ave., Flushing55, N.Y.)

    5-10. American Chemical Soc., 135th,Boston, Mass. (M. A. H. Emery, 18thand K St., NW, Washington, D.C.)

    5-10. Nuclear Congress, Cleveland,Ohio. (S. Baron, Burns & Roe, Inc., 160West Broadway, New York 13.)

    6. Paleontological Research Institution,Ithaca, N.Y. (R. Harris, 109 DearbornRd., Ithaca.)

    6-7. Chemical and Petroleum Instru-mentation, 2nd natl. symp., St Louis, Mo.(H. S. Kindler, Director of Technical andEducational Services, ISA, 313 SixthAve., Pittsburgh 22, Pa.)

    6-8. American Radium Soc., HotSprings, Va. (R. L. Brown, Robert Win-ship Clinic, Emory Univ., Atlanta 22,Ga.)

    6-8. National Open Hearth Steel Fur-nace, Coke Oven and Raw MaterialsConf.,-St. Louis, Mo. (E. 0. Kirkendall,AIME, 29 W. 39 St., New York 18.)

    6-9. American Acad. of General Prac-tice, San Francisco, Calif. (M. F. Cahal,Volker Blvd. at Brookside, Kansas City12, Mo.)27 FEBRUARY 1959

    6-1l . Coordination Chemistry, intern.conf., London, England. (Chemical Soc.,Burlington House, London, W. 1.)

    8. Evolution of Cell Populations, conf.(by invitation), Atlantic City, N.J. (D. C.Hetherington, Dept. of Anatomy, DukeUniv. School of Medicine, Durham, N.C.)

    8-9. Tissue Culture Assoc., 10th annual,Atlantic City, N.J. (D. C. Hetherington,Dept. of Anatomy, Duke Univ. School ofMedicine, Durham, N.C.)

    10-11. Society for the Scientific Studyof Religion, Chicago, Ill. (W. H. Clark,SSSR, Hartford Seminary Foundation,Hartford 5, Conn.)

    10-16. Mental Health, 2nd Caribbeanconf., St. Thomas, Virgin Islands. (Mrs.

    MEASURE

    NOTE THESE QUALITY OPTICAL* Oblectives: achromatic, coated, 3X, M1OX, M40X.

    Eyepince: coated Kel OX with crosshair.* MagnIficatIons: 30X, 1 OOX, 40OX; up to 2000X

    with accessories e* Focusing: Both dual control rack and pinion coarse

    and micrometer-screw type fine adjustments Body -has locking device.

    * Three fluminaters: sub-stage, surface and vertical, ehove variable intensity.

    In fitted hardwood cabinet

    E. L. M. Shulterbrandt, Bureau of MentalHealth, St. Thomas, V.I.)

    12-13. Americani Soc. for Artificial In-ternal Organs, Atjntic City, N.J. (C. K.Kirby, ASAIO, 10 Maloney Bldg., Uni-versity Hospital, 3600 Spruce St., Phila-delphia 4, Pa.)

    12-14. Atomic Mechanisms of Fracture,conf., Cambridge, Mass. (D. K. Felbeck,Natl. Acad. of Sciences-Natl. ResearchCouncil, 2101 Constitution Ave., NW,Washington 25.)

    12-15. Neurosurgery, 8th Latin Ameri-can cong., Santiago, Chile. (A. Asenjo G.,Casilla 70-D, Santiago, Chile.)

    (See issue of 20 February for comprehensive list)

    lWIDTH UNIgTRON'S§

    MICROSThe UNITRON Model TM is more thanjust a measuring microscope. It is theonly Instrument which combines in onestand a completely equipped tool-makers microscope for precise measure-ments - LENGTH, WIDTH and DEPTH,and a metallurgical microscope forexamining the structure of polishedmetal samples under high magnification.

    & MECHANICAL FEATURESCombinetlon Stage: rectangular ball bearing withlinear measurements to 0.0001' and rotary measure-ments to S' with vernier. (Metric model available onspecial order.)Depth Indicator: measures in units of 0.0001' by'optical contact" with specimen.Projection Screen: available as accessory foroptical comparison.Eyepiece Turret: available as accessory for meas-uring surfaces, radii, thread pitch etc.

    a-..oUNITRON'S OFFER: j osenshoelNITRON's MicosopCe4N-4. Ia 1O-Day trial of a TM in your plant r NsTCwithout any cost or obligation. I Cow I

    I So.city State

    THE TREND IS TO UNITRON L..........J577

  • 578 SCIENCE, VOL. 129

    P H 0TOY0 LIT Line-OperatedMultiplier FLUORESCENCE METER

    Mod. 540

    * High-sensitivity for measurement of low concentrations(full-scale setting for 0.00 1 microgram quinine sulphate)

    * Micro-fluorimetry with liquid volumes as low as 1 ml* Low blank readings, strict linearity of instrument response* Universally applicable due to great variety of available fil-

    ters, sample holders, adapters and other accessories* Interference filters for high specificity of results and for

    determining spectral distribution of the fluorescent light* High-sensitivity nephelometry for low degrees of turbidities* Fluorescence evaluation of powders, pastes, slurries, and

    solids also for spot-tests on filter paper without elationWrite for Bulletin #392 to

    PHOTOVOLT CORP.95 Madison Ave. New York 16, N. Y.

    The Society for General Systems Researchannounces the publication ofGENERAL SYSTEMS

    (The Yearbook of the Society)LUDWIG VON BERTALANFFY and ANATOL RAPOPORT, editors

    Contents of Volume 3 (1958)Part I. INTRODUCTIONGeneral Systems Theory as a New Discipline

    WV. Ross AshlhyPart II. CONCEPTS OF BIOLOGYDarwvin, Darwinism and History .. Bert James LoewenbergEvolutionary Concepts in Behavioural Science

    XV. Ml. S. RussellExperiments in Microevolution ............ R. WV. GerardInformation Theory in Ecology .......... Ramion Margalef

    Part III. POPULATION DYNAMICSFormal Properties of Animal Communities

    L. Basil SlobodkinThe Choice and Solution of Mathematical Models for Pre-

    dicting and Maximizing the Yield in a FisheryKenneth E. F. WNatt

    Studies in Population Productivity. I. Three Approaches tothe Optimum Yield Problem ...... Kenneth E. F. Watt

    Fluctuations of Animal Populations and a Measure of Com-munity Stability .............. :....... Robert MacArthur

    Strutggle for Existence. The Tribolium Model: Biologicaland Statistical Aspects

    Jerzy Neyman, Thomas Park and Elizabeth L. ScottOn a Mathem.atical Theory of lPopulations Conceived asConglomerations of Clusters

    Jerzy Neyman and Elizabeth L. ScottStatistics of Images of Galaxies with Particular Reference

    to ClusteringJerzy Neymian, Elizabeth L. Scott and C. D. Shane

    Part IV. SOCIAL SCIENCE AND EDUCATIONSystems and History in International Relations. Some

    Perspectives for Empirical Research and TheoryCharles A. McClelland

    Toward the Knowledge of Man ............ Ordway Tead

    Price per volume $7.50. Subscriptions free to members ofthe Society. Business and membership correspondence shouldbe addressed to Dr. Richard L. Meler, Secretary-Treasurer,Society for General Systems Research, 1137 East Ann Street,Ann Arbor, Michigan.

    Tissue CRYO-DESICATORFOR USE IN:

    HISTOLOGY * CYTOLOGY * HISTOPATHOLOGYCYTOCHEMISTRY * HISTOCHEMISTRY

    The Tissue Cyro-Desiccator provides a simply,rapid, reliable and inexpensive method of pre-paring frozen dried tissues. Tissues are supportedin a basket with movable partitions.

    Temperature is measured under the same condi-tions as the tissue. Liquid nitrogen is used to coolthe tissue. Automatic sealing is achieved by at-mospheric pressure. Inexpensive to operate; easyto use. Construction is rugged, with glass partsheld to a minimum. Furnished with extra glasstube for tissue heater, electric cord, flexible metaltube for attaching to pump and dial thermometer,Weston 0-1 80 Deg. F.

    Cat. No. 9-99

    LPOUa PLP$ U.L3a MID. gai3sManufacturers & Distributors of Scientific Equipmentf~7 6th & Byrd Streets - Richmond, Vo.

    i

    1 1

    578 SCIENCE:, VOL. 129

  • EquipmentThe information reported here is obtained

    from manufacturers and from other sources con-sidered to be reliable, and it reflects the claims ofthe manufacturer or other source. Neither Sciencenor the writer assumes responsibility for the accu-racy of the information. A coupon for use in mak-ing inquiries concerning the items listed appearson page 582.

    M MOISTURE BALANCE is a self-containedunit comprising a magnetically damped,analytical-type chain balance as theweighing system and an infrared heat-ing element which provides even con-centration of heat to the sample in aheating chamber. Heating power is con-tinuously variable up to 650 w, and thedistance between the source and thesample may be adjusted between Y8 to1¾V4 in. Liquids as well as solids can behandled. Moisture can be read by settinga single dial at any time during the pre-set time cycle of the instrument. Thebalance can also be used for directweighing up to 10.0 g with sensitivityof 10 mg. (Ohaus Seale Corp., Dept.666)

    M ULTRAVIOLET SENSITOMETER exposesfilm to ultraviolet radiation in a seriesof calibrated steps. A germicidal lampis the source of radiation, and a sectorwheel rotating at 1700 rev/min providesthe range of exposures. A magnesiumoxide reflecting plate permits exposuretimes to be prolonged to approximatethose obtained in spectrographs forwhich the films are designed. An elec-tric shutter times a 20-sec exposure.(Eastman Kodak Co., Dept. 659)

    * HIGH-TEMPERATURE FURNACE is de-signed for operation to 3100OF withouta protective atmosphere. Heating ele-ments are protected by a nonflakingoxide coating. Temperature run-up isautomatically programmed. Tempera-ture control is provided by thermo-couple instruments. (K. H. HuppertCo., Dept. 644)

    *HIGU-VOLTAGE RELAY is a vacuum de-vice that can be actuated by an a-csource at any frequency from 40 to 10,-000 cy/sec. It is designed for continuousoperation from - 1200 to + 3801F andis capable of switching up to 30,000 va-c or d-c. Coil voltages range from 12to 120 v. (Resistron Laboratories, Inc.,Dept. 655)

    *TIME-DISTANCE MEASURING DEVICE is.designed to. sense aL time intervat 1pto3 sec or a distance up to 200 ft. Uponattaining the proper time or distance aspreset into the dials, the device pro-duces a pulse of 22 amp peak and 0.1sec duration to fire squibs. The distancesensor circuit is accurate to ±5 percentover the temperature range 00 to 500C.Double integration of the output of an27 FEBRUARY 1959

    accelerometer produces a voltage signalproportional to distance. Time delay canbe extended beyond 3 sec. (Alto Scien-tific Co., Inc., Dept. 661)

    M PNEUMATIC CAUBRATOR is a portableinstrument covering the 3-to-15 lb/in.2pneumatic instrument range. The cali-brator incorporates a shock-mounted pre-cision dial manometer, pressure regu-lators, three-way selector valve,, over-pressure-relief valve, air filter, and con-nection block. Accuracy is ± 0.1 percent;sensitivity 0.01 percent. (Wallace andTieman Inc., Dept. 665)

    *FLOW METER determines fluid velocityin a constant-area passage containing aspinning turbine rotor supported entirelyby a fluid film serving as a bearing. Wearand error effects from radial or thrustfriction are said to be overcome by thisdesign. Ranges of 10 to 1 are availablewith accuracy ± 0.25 percent of meas-ured flow. The instrument cannot bedamaged by continuous exposure toflows several times the normal limit.(Waugh Engineering Co., Dept. 662)

    JOSHUA STERNNational Bureau of Standards,Wahington, D.C.

    THE vBRONWILLv* Warburgmost compact-most versatile

    Warburg AvailableRequires only

    -20Y2" of Desk Space* Magnetic Temperature Setting.* Highest Temperature Constancy

    ±0.010 C.* Cooling Coil Built In.* Fastest to Set Up. Small both (only 8

    liters) heats from ambient to 37WC in22 minutes.

    * Rotatable thru 3200.Calibrated-InterchangeableManometers & Vessels Available.

    * Available for Photosynthesis.

    DOUBLE CAPILLARYMANOMETERS

    ModelUV shown above, is a compact, dircu-lar unit, only 20OA diameter, 31' high, ro-tatable thru 3200 permitting any of themanometers to be quickly read. Model UVLequipped for photo-chemical work.

    Single background scale-asturdy single rod containing twocapillaries Available pre-calibrated-interchangeable-no more calibrating each timea piece is broken

    *The trademark identifying products of Bronwill Scientific Division, Will Corporation.

    ONYWILL SOENTIFRC DIVISION J

    Otix,127, mghlon Slulon, Roches 10, K Y., Dept. 665 |fPieas send full Information on Bronwill WarburgsName-.........-- ..........a...... I

    Company --- .- - . .

    Address.-~....cityo. __._.....__--.-- :tf

    .A.........l ._..._.....: ....... I

    5i79

    I

  • PERSO0NNEL PLACEMENTANTIMETABOLITESAND CANCER

    AAAS Symposium Volume6"x 9", 318 pp., 54 illus.,

    clothbound, 1955Price $5.75

    AAAS Members' prepaidprice $5.00

    "This volume presents thegreat variety of techniques anddisciplines being brought to bearon the problem of cancer therapyand the vitality of the chemo-therapeutic approach to cancer.This is an important book andmerits the careful considerationof cancer investigators, biochem-ists, pharmacologists and generalbiologists."

    Cancer, Jan-Feb 1956.

    "All who are concerned withthe problems of chemotherapy inmalignant disease and those whowish to broaden their knowledgeof the challenging subject of anti-metabolites will find a wealth ofinformation in this edition. ...

    "The text is clearly written andreadily understandable by thosewho have a good working knowl-edge of biology and chemistryand are familiar with termswhich are currently used in themedical sciences; it is particu-larly recommended to the atten-tion of those engaged in research,teaching, and treatment of can-cer, and in study of the problemsof growth." American Journal ofPublic Health, Feb 1956.

    American Associationfor the

    Advancement of Science1515 Mass. Ave., NWWashington 5, D.C.

    POSITIONS WANTED

    Microbiologist, master's degree; would like po-sition involving some teaching with time forresearch; since 1954, research assistant, largeuniversity. Medical Bureau, Burneice Larson,Director, 900 North Michigan, Chicago. X

    Ph.D. Zoology; primary interest and training incell physiology and biochemistry. Desires re-search position. Box 33, SCIENCE. 2/27

    I| I POSITIONS OPEN

    UNIVERSITY OF ALBERTAFaculty of Agriculture

    Applications are invited for a position in thedepartment of plant science as Assistant Profes-sor of Plant Pathology. The starting salary willbe between $6000 and $7000, depending on qual-ifications and experience, and there are excellentopportunities for advancement. Postgraduateeducation equivalent to the Ph.D. in plant path-ology and related fields is required. The personappointed will be expected to assist in the teach-ing of plant pathology, in general plant patho-logical work, and in the development of a strongprogram of research. Excellent laboratory, field,and greenhouse research facilities are available.

    Applications, accompanied by a recent photo-graph and giving age, nationality, and otherpersonal information; academic qualificationsand experience; list of publications and namesand addresses of three references, should be sub-mitted to the Head, Department of Plant Sci-ence, University of Alberta, Edmonton, Alberta,Canada. Closing date: 1 May 1959. 3/6, 13

    The University of Alberta invites applicationsfor a position in the Department of Animal Sci-ence as Assistant Professor. The starting salarywill be between $6000 and $7700 according toqualifications and experience; excellent prospectsfor advancement. Postgraduate education equiv-alent to the Ph.D. is required. Duties, to com-mence between 1 May and 1 September 1959,include research in fundamental and appliednutrition with dairy cattle, teaching, and limitedextension work.

    Applications, accompanied by a recent photo-graph and giving age, nationality, and other per-sonal information; academic qualifications andexperience; list of publications and names andaddresses of three references, should be ad-dressed to the Head, Department of Animal Sci-ence, University of Alberta, Edmonton, Alberta.Closing date: 15 April 1959. 2/27; 3/13

    Assistantships and Fellowships, research andteaching, in microbiology. Specialized researchin virology, pathogenic, physiology, industrial,soil, food and dairy microbiology. Salary $1200to $1700 for 9 months; $1800 to $3000 for 12months. Write to Department of Bacteriology,Oregon State College, Corvallis, Oregon.

    2/20, 27; 3/6

    Assistant or Associate Professor to develop acurriculum in electrical engineering and eventu-ally be chairman, in a private engineering schoolin northern California college. Send detailedresume, references, recent photo, state salary toBox 39, SCIENCE. 2/27; 3/6, 13

    POSITIONS OPEN

    Biochemist, male, M.S. or Ph.D. Special train-ing or experience in enzymology for researchproblem in experimental production of congenitalabnormalities. Salary open. St. Barnabas Medi-cal Center, High Street, Newark, New Jersey.

    2/27; 3/6

    Biochemist with demonstrated research abilityin protein and/or enzyme chemistry for a per-manent position with opportunity to develop in-dependent research program. Salary dependentupon qualifications. Write Dr. M. 1). Armstrong,The Fels Research Institute, Yellow Springs,Ohio. X

    Biologist or Physiologist. Biochemist or physi-ologist with biochemical orientation to partici-pate in studies on cardiovascular-renal physiol-ogy. Experience in tissue analysis and isotopetechniques desirable. May Institute, RidgewayAvenue, Cincinnati 29, Ohio. 3/6; 4/3

    Biologists. Ph.D's new state college, southernCalifornia. Prefer background in physiology,genetics, embryology, microbiology, or botany.Please send full resume to Ralph Prator, Presi-dent, San Fernando Valley State College, North-ridge, California. 2/27

    Executive Secretary, M.Sc. or Ph.D. in science;administrative ability; teaching experience; in-itiative; affable; willing to travel some. Full-time position implementing Junior Division pro-gram and programs for improvement of scienceteaching, teacher certification, science libraries,science-industry liaison in Ohio. Attractive sal-ary. Write for application form. Dr. George W.Burns, Secretary, Ohio Academy of Science,Delaware, Ohio. 2/20, 27; 3/6

    Information Scientists: To evaluate, abstract,2nd code scientific information. Training in bio-logical or medical sciences. Interest in writingand ability to read one or more foreign lan-guages useful. Abbott Laboratories, Employ-ment Division, North Chicago, Illinois.

    2/20, 27

    New World-Wide Graduate Award Directoriesfor American scientists, teachers, librarians tosubsidize their education and research. Stipends$200-$10,000. Volume I (1957), $3; volume 11(just published, no duplication), $3; both vol-umes, $5. Limited editions. Complete, specificinformation on 400 awards in United States andoverseas in each volume. CRUSADE, Sci., Box99, Station G, Brooklyn 22, N.Y. eow

    (a) Physician interested in research, well trainedin biochemistry, with pediatric background;duties include director research program in psy-chiatry, cardiovascular diseases, leukemia, hemta-tology, virus diseases, allergy; new researchbuilding, East. (b) Ph.D.'s in Biochemistryand Pharmacology; experience in proteins help-ful but not essential; latter should be expe-rienced in physiology and pharmacology; bothcandidates should possess administrative expe-rience; $14,000; near university center, E- st.(c) Clinical Microbiologist, Physician or Ph.D.;duties include supervision of clinical bacteriol-ogy and research; one of leading clinics andteaching hospitals; Midwest. S2-4 Medical Bu-reau. Burneice Larson, Director, 900 NorthMichigan Avenue, Chicago. X

    Research and Teaching Assistantships in anat-omy are available to qualified persons to studytoward the Ph.D. degree. A background in bio-logical sciences with some chemistry is desirable.Stipends begin at $2400 per year. Write Head ofAnatomy Department, College of Medicine, Uni-versity of Florida, Gainesville, Florida.

    2/27; 3/6; 13SCI 9~

    ~~~

    580

    CLASSIFIED: 250 per word, minimumcharge $4.25. Use of Box Numbercounts as 10 additional words. Pay-ment in advance is required.

    COPY for classified ads must reachSCIENCE 2 weeks before date of issue(Friday of every week).

    DISPLAY: Rates listed below-no chargefor Box number. Monthly invoices willbe sent on a charge account basis -provided that satisfactory credit isestabl ished.

    Single insertion $26.00 per inch13 times in 1 year 24.00 per inch26 times in 1 year 23.00 per inch52 times in 1 year 22.00 per inch

    For PROOFS on display ads, copy mustreach SCIENCE 4 weeks before dateof issue (Friday of every week).

    Replies to blind ads should be addressedas follows:

    Box (give number)Science1 51 5 Massachusetts Ave., NWWashington 5, D.C.

    MEDICAL WRITER

    Opportunity available for young physi-cian in Professional Service Departmentof Medical Division. Should have abilityand interest in medical writing. Clinicalor laboratory experience desirable. Pleasesend complete resume to:

    Technical Employment CoordinatorTHE UPJOHN COMPANY

    Kalamazoo, Michigan

    1

    m

    a

    1

    -__

    SCIENCE, VOL. 129

  • Simultaneously recordand visually monitor

    biophysical phenomenaWITH THE NEW MULTI-CHANNEL

    SANBORN 550M SeriesPoly-Beam Photographic Recording System

    SPEED and SENSITIVITY of the 550M Systempermit diagnostically accurate recording of fastchanging phenomena such as heart sounds andsmall-animal ECG's and of low-level signals suchas small-muscle myograms, EEG and fetal ECG.VERSATILITY and FLEXIBILITY of the 550Mdesign offer many advantages. The system canbe purchased with only 4 or 6 channels andminus the monitoring unit. Additional inter-changeable plug-in preamplifiers (up to a totalof 8), plug-in mirror galvanometer inserts andthe visual monitoring unit-consisting of anelectronic switch, vector timer and oscilloscope-can be added later.ADDITIONAL FEATURES include: entire 6inch chart width available to all beams ... abilityof beams to be superimposed and to cross eachother... .photographically registered timing andamplitude lines ... trace interrupter for beamidentification. . . provision for elimination ofamplitude lines from part or all of the record. .. choice of 8 chart speeds from 1.25 to 200

    mm/sec ... display on the monitoring unit of upto four waveforms at once, or vector loops, as eithera substitute for or a supplement to the recorder. . . exposed film container can be removed at anytime under normal light .., event marker included... provision made for remote control. . . viewingwindow permits observing and positioning of gal-vanometer beams.The new 550M Poly-Beam is a completely self-contained recording - monitoring system built intoa single, mobile cabinet only 22" wide and 6' high.Sanborn also offers a new direct- writing recorder,the 350M Series -in a 6- or 8-channel system. Plug-in "350" style preamplifiers can be used inter-changeably with the 550M Series which is identicalin cabinet size and style.Write for the new 8-page 550M catalog, orthe complete catalog describing the majorSanborn instruments for measuring, re-cording or monitoring biophysical phe-nomena. The Sanborn Branch Office orService Agency nearest you can alsosupply complete information on any orall Sanborn equipment.

    SANBORN COMPANYMEDICAL DIVISION

    175 Wyman Street, Waltham 54, Massachusetts

    6 MARCH 1959 607

  • Now you can useself-lubricating

    TEFLON® STOPCOCKSon an everyday

    basis!Kontes saves you moneythree ways on chemically-inert* Teflon items!

    Increased production has low-ered prices substantially on allKontes Teflon Stopcocks andapparatus which incorporatethem. You save, in fact, threeways by getting Teflon productsfrom Kontes: by reduced indi-vidual prices, by lower quantityprices, and by combining Teflonitems with your regular ordersfor Kontes Technical Glasswarefor even greater discounts.COMPARE KONTES QUALITY! TeflonStopcock barrels are ground andpolished, providing the ultimatein smooth, even turning withoutlubricant. Special spring-loadingdevice keeps plug properly seatedand leak-free without dangersinherent in over-tightening. Wallthickness is appreciably greaterthan other brands. Sidearms in-crease gradually in o.d. and de-crease in i.d. at seals to barrelsfor greater strength and im-proved flow characteristics.Order now for immediate de.livery! Write for your free copyof our new Bulletin TP-1. It de-scribes all Kontes Teflon ware in.cluding beakers, burettes, pi.pettes, separatory funnels, stop.cocks, etc.K-81100 STRAIGHT STOPCOCKprices below are typical-Size Bore, mm. Plug size, mm. Each2 A 2 10/25 4.503 A 3 10/25 4.50

    2 2 12/30 6.904 4 17/40 9.20

    Teflon has almost universal chemical inertness.®Reg. T.M., E. 1. du Pont de Nemours & Co., Inc.

    KONTESGLASS COMPANY

    First Choice For Quality Technical GlasswareVineland, New Jersey

    Midwest Distributor: Research Apparatus, Inc. ,WaucondaI11.

    608

    LettersProtein Behavior

    In a recent article [Science 128, 815(1958)], I. M. Klotz admirably pointsup the fact that electrostatic interactionsinvolving proteins and small ions havegenerally had to be treated in an over-simplified way, and he calls attention tothe many observations which would sug-gest that the properties of the water inthe immediate vicinity of the proteinmolecule may be rather different fromthose of the water in the bulk solvent.His proposal regarding the effect ofan ice structure would explain thegreater difficulty of protonation of an-N ( CH3) 2 group but, it appears,would still not solve the problem of re-duced reactivity of the -SH group withAg+, with which he initiated the discus-sion. In this case, of course, there wouldbe no change in the charge to modify thestructure of the ice lattice.The proposal seems even more trouble-

    some when one considers the -COOHgroups in the protein. In this case acharge appears on the group when thehydrogen ion is lost. Consequently, theloss of the proton would be hindered,and the apparent pK should be increasedas compared with the expected intrinsicpK. There seems to be little evidencefor any considerable number of -COOHgroups with unexpectedly high pK's inproteins.The lack of any evidence for electro-

    static effects on the titration curve of theazomercurial would still be disturbing,however-unless one assumes that thereaction with hydrogen ion is leading todisplacement of the azomercurial. If thiswere true, there would be no change inthe charge, and one would not antici-pate an electrostatic effect. Such a dis-placement of methylmercury would havebeen anticipated on the basis of the re-sults of Hughes [Cold Spring HarborSymposia Quant. Biol. 14, 79 (1949)].

    JOHN W. MEHLUniversity of Southern California,Los Angeles

    Each of the three paragraphs of Mehl'sletter raises essentially one question. Theresponses may be grouped, therefore, intothe same arrangement.

    1) "Maskedness" in the behavior of-SH groups, as Mehl would undoubt-edly agree, is a problem of rates ratherthan equilibria. For example, Ag+ isusually taken up even by masked -SHgroups of proteins if we wait longenough. In terms of my model, the ex-planation (clearly implied if not explic-itly stated in the article) is that Ag+would diffuse through "ice" much moreslowly than through liquid water. Whileno actual data are available for diffusion

    of Ag+ in ice, measurements with a simi-lar monovalent ion, Li+ [M. Eigen andL. DeMaeyer, Proc. Roy. Soc. (London)247A, 505 (1958)], certainly bear thispoint out.

    2) The most careful theoretical anal-yses of the titration curves of a proteinwith, for example, 100 carboxyl groupshave limited themselves to a single in-trinsic dissociation constant. The spreadof the titration curves has been accountedfor by the assumption that there is avariable electrostatic factor, plus neces-sary additional assumptions in specificcases. Clearly, if deviations from ideal-ity are attributed to these additional fac-tors, and if we permit the possibilityof only a single intrinsic constant, wecannot possibly find more than oneintrinsic constant. As I have emphasized,however, the titration curves can also beaccounted for by the assumption thatthere is a broad spectrum of pK's forthe carboxyl groups.

    3) The explanation suggested by Mehlis not really tenable. We have not studiedthe titration curve by some generalmethod which follows gross H+ ion up-take but rather by a special spectropho-tometric method which reveals specifi-cally the uptake of H+ by the (CH3 ) 2N-group of the dye, not by the mercaptidegroup of the protein. It is the unusualpK and the unexpected shape of thecurve for the optical titration of this par-ticular (CH3) 2N- group which mustbe interpreted; a displacement mecha-nism postulates changes in state of a dif-ferent group at the opposite end of themolecule. Furthermore, one should alsorecall that if the dye had been displacedfrom the mercaptide linkage, no opticaltitration could have been obtained in thefirst place, for as we have mentioned pre-viously [Arch. Biochem. Biophys. 63, 77(1956)], the dye is essentially insolublein water alone.

    I. M. KLOTZNorthwestern University,Evanston, Illinois

    On Eschewing Teleology

    A. J. Bernatowicz' stern admonitions[Science 128, 1402 (1958)] to his bio-logical colleagues and to all other scien-tists to eschew anthropomorphism andavoid even the appearance of teleolog-ical thinking (lest their students be notsaved from corruption) confuses me. Hewants mechanism, and thus also surelydeterminism, recognized as the languageof science, and he wants the teacher ofscience not to depart from it. Does hemean never? Not with the student at theluncheon table? Not with his wife at thebreakfast table? How rigorously mustrighteousness be applied? And must allscientists observe the canon? I think

    SCIENCE. VOL. 129

  • THEYPROBETHE FUTURE OF DEEP-SEA TELEPHONY

    Deep in the ocean, a submarine telephone cablesystem is extremely hard to get at for adjustment orrepair. This makes it vitally important to find out whatcan happen to such a system before it is installed.

    Bell Laboratories engineers do this by means oftests which simulate ocean floor conditions on dry land.Among many factors they test for are the effects ofimmense pressures on amplifier housings and theirwater-resistant seals. They also test for agents whichwork very slowly, yet can cause serious destruction overthe years-chemical action, marine borers and severalspecies of bacteria which strangely thrive under greatpressures.

    Through this and other work, Bell TelephoneLaboratories engineers are learning how to createbetter deep-sea telephone systems to connect Americato the rest of the world.

    A,..~~~~~~~~~~~~~~~~~~~~...... .._

    Highly precise instruments developed by Bell Laboratories en-gineers are used to detect infinitesimal changes in cable loss-to an accuracy of ten millionths of a decibel.

    "Dry Land Ocean," under construction at Bell Laboratories,simulates ocean floor conditions, is used to test changes incable loss. Sample cables are housed in pipes which containsalt water under deep-sea pressure. The completed trough is Iroofed in and is filled with water which maintains the pipesat 370 F., the temperature of the ocean floor.

    BELL TELEPHONE LABORATORIES Seawater and sediment in bottle characterize ocean floor. TestWORLD CENTER OF COMMUNICATIONS sample of insulation on coiled wire is checked for bacterialRESEARCH AND DEVELOPMENT attack by conductance and capacitance tests.1

  • TOO MANY

    VARIABLES?It's time to draw a line.Straighten out your cleaningproblems with

    HAEMO .SOLThere's nothing like Haemo-Sol'sunique cleansing power and positiverinsing . . . it's completely safe! Noetching! No corroding of metal parts!Immediate Haemo-Sol bath forvaluable volumetric and opticalequipment prevents soil etching!

    Haemo-Sol guarantees clean laboratoryglassware and apparatus-* removes the full range of lab-

    oratory soils* effectively digests protenoid ma-

    terials . . . other types of poly-meric materials

    * assures free draining pipets.. .burets

    * gives sparkling clear surfacesfor quartz and glass absorptioncells

    * provides chemically clean reac-tion and titration flasks

    * leaves the clean surfaces that area must for the smooth operationof fractionating columns andother pieces of laboratoryequipment.

    And, just as important as its uniquecleaning power, is Haemo-Sol's highsolubility and powerful solubilizingaction. Haemo-Sol washed glasswarerinses completely clean ... nothingremains behind but a chemically clean,free drain-ing glasssurface.-

    TODAY forSample andLiterature.

    Distributed by

    MEINECKE & CO.,INC.225 Varick StreetNew York 14

    Bernatowicz does believe just this, andI suspect that he also thinks that thescientific view of the world is the trueview and that he who departs fromproper deterministic language is dealinglightly with truth.

    Well, the language of science is de-scriptive and not purposive. I am whollyin accord with Bernatowicz on that point.But, if we are talking science, I go far-ther where he stops short, for I note-remaining descriptive because I am be-ing scientific-that we have here a caseof one organism attacking others becausethese others behave differently from theone. Scientifically, all we have is a casedescription of an idiosyncratic organism,Bernatowicz, which does not, on theshowing of his paper, represent the spe-cies but a departure from it. Is this or-ganism quieted by this description of hisbehavior, or do his wotds suddenly seemto carry an anthropomorphic meaning?Do they say that his purpose was to con-vince others of his own rightness, thusruling him out of the class of scientificorganisms because he speaks in terms ofpurpose? If Bernatowicz wants rigor andthe scientific attitude all the time, lethim, a biologist, include his own con-duct under the scientific rules. Was heor was he not being purposive? I thinkhe was.

    For myself, I take the use of the sci-entific language more lightly, less rigor-ously, and I am glad 'that most of mycolleagues do too. J. J. Thomson saidthat a scientific activity is a policy, andhe might have made his commentbroader to say that all scientific activityis a policy to be accepted when it worksand changed when it does not. I do notpretend to be a scientist in all my speech,nor do I want students to be. I wantthem to have valueg and purposes, toknow when to escape the scientific straitjacket and also when to get a new straitjacket. There should be 'nothing so in-flexible about science or scientific con-duct or scientific language. What wewant for scientists is wisdom, good judg-ment, the ability to speak and write Eng-lish delicately and significantly, enoughwisdom to break any rule when a goodpurpose will be supported thereby.

    Urbanity never hurt a scientist yet.Using English with skill, relying on theconnotations to work as they should, isless secure than the rigor of mathematicsbut an art capable of much greater re-finement. I find in none of Bernatowicz'examples the sort of thing that shouldbe changed if it is given in a proper sci-entific context. A strict adherence to hisrule would eliminate entirely from sci-entific speech the phrase in order that,and that seems to me to be a preposter-ous suggestion. The Darwinian theorywas a way of changing purposive eventsinto descriptive, and for me (and Ishould hope for most students) the con-

    text of most of these disapproved sen-tences would be the nonpurposive, de-scriptive concept of natural selection.

    In any event-say I, anthropomorph-ically purposive, and purposively anthro-pomorphic-let us not warp our youngscientists by rigid rules. Always remem-bering that we do not wish for all to bealike, let us cultivate urbanity, wisdom,and flexibility. Let us help them to learnto speak and write well, clearly, freely,attractively, and differently from one an-other. Let us hope they can learn tothink of science as a happy way of life,not as a harsh taskmaster with a codeof morals dangling at his belt.

    EDWIN G. BORINGHarvard University,Cambridge, Massachusetts

    In the interests of clear thinking oneshould certainly be wary of any state-ments that are unjustifiably teleological,as A. J. Bernatowicz has pointed out.Judging from his conclusions, however,I suspect that he would prefer to leaveout the word unjustifiably in my firstsentence, as would many other scientists,although not all. [See L. K. Frank, G. E.Hutchinson, W. K. Livingston, W. S.McCulloch, N. Weiner, Ann. N.Y. Acad.Sci. 50, 187 (1948)].

    Let me make plain at the beginningthat I would agree that in many circum-stances teleological language is inappro-priate, implying the existence of agenciesbeyond our ability to observe directly.The examples quoted by Bernatowicz, Iwould judge, all demonstrate misappli-cation of teleological concepts. However.not all of them are inherently unsuitedto such treatment.What do we mean when we say that a

    statement is "teleological"? Do we notmean that it implies some directing orgoverning factor which by its nature"causes" events to follow certain observedcourses? Certainly in this sense the ideaof "force" or "gravitation" or "field" is,or can easily be seen as, teleological, in-voking the presence of an agency whichwe can observe only by inference. But ifwe are careful to note that, for example,a "field" is a map of what we might ex-pect to observe, then we can still use theconcept of "field" at one level of expla-nation, without implying the existenceof any incompletely defined agency.There is a more important area of

    teleological thinking, however, in whichthe above "way out" is of no use. Thisis the area of biology, physiology, psy-chology, and other sciences of life. Letme emphasize that when one approachesthese disciplines in an attempt to imitatethe (in principle) rigorous methods ofphysics, then any use of teleologicalthinking is bound to go astray. But if oneapproaches living entities from the sys-

    (Continued on page 671)

    SCIENCE, VOL. 129

    .. Y*

    610

    ......