II - Science€¦ · Hackh's Chemical Dictionary 3rd Edition Complete, with new information, thoroughly up-to-date, Atomic Fission, etc., this handy one-volume dictionary coversall

NOVEMBER 111, 1949

SCIENTIFIC INQUIRYAND SCIENTIFIC METHOD

HADLEY C4ITIL ET AL.

FREDERICK GARDNER COTTRELL:1877-1948

FARRINGTON DANIELS

TECHNICAL PAPERS

COMMENTS AND COMMUNICATIONS

NENWS AND NOTES

COMPLETE TABLE, OF CONTENTS ON .PAGE 3,VOLUME 110, NUMBER 2863

ADVANCEMENT OF SCIENCE

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The Technicon Fraction Collector has been thoroughlytested in actual laboratory installations, where it has proveninvaluable to busy research staffs. We shall be happy to sendyou details.

Ref. Chromatography of Amino Acids on Starch Columns-W. H. Stein and S. Moore, Jrnl. Biol. Chem. 176, 337,(1948)

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' triples work outputyou con run it twenty-four hours a day, continuously,to triple fractionation output as compared with an 8hour laboratory day.

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FROBISHER'S BACTERIOLOGYNEW (4th) EDITION. You are certain tofind this New (4th) Edition more teachablethan its predecessors, because the revision wasmade with that aim always in mind. The entireorder of presentation has been changed with thefollowing resultant improvements: eliminationof advanced terminology from the early chap-

ters; less emphasis on pathogenic aspects; andbetter grouping of material. There are 435illustrations.

BY MARTIN FROBISHER, JR., Sc.D., Chief, Bacteriology Labo-ratories, Communicable Disease Center, U.S.P.H.S.; Lecturerin Bacteriology, the Johns Hopkins University. 936 pageswith 435 illustrations. $5.50. New (4th) Edition.

JORDAN - BURROWS' BACTERIOLOGYNEW (15th) EDITION. One of the truly sig-nificant features of this standard text is its em-phasis on the physiology of microorganisms-a topic that is increasing daily in importancebecause it is the basis of research into chemo-therapeutics. A basically biologic approach ismaintained throughout, and there are many

new electron micrographs among the 264 illus-trations. The excellent arrangement of ma-terial facilitates the preparation of lectures.

By WILLIAM BURROWS, PH.D., Professor of Bacteriology, De-partment of Bacteriology and Parasitology, University ofChicago. 981 pages with 264 illustrations, some In color.$9.00. New (15th) Edition.

MAXIMOW & BLOOM'S HISTOLOGYFIFTH EDITION. In this widely-used textthe student is not only led to understand theminute structure of each human part-he isalso told which cells of that part are responsiblefor each phase of its function, and how theseparticular cells operate. New concepts of tissue

function disclosed by the use of radioactiveisotopes are included. The 562 illustrations arenoted for their vivid tone values.

By ALEXANDER A. MAXIMOW and WILLIAM BLOOM, Professorof Anatomy, University of Chicago. 700 pages with 562illustrations. $8.50. Fifth Edition.

W. B. SAUNDERS COMPANY

West Washington. Square

November 11, 1949, Vol. 110 SCIENCE 1

Philadelphia 5

November 11, 1949, Vol. 110

TAYLOR

The Examination of Waters &Water Supplies (Thresh, Beale & Suckling)

New 6th Edition Just Off The PressA recognized reference for 40 years, this new edition hasbeen completely revised-extensive changes have beenmade in chapters on water-borne disease, bacteriologyof water samples, disinfection of water supplies, gather-ing grounds and underground supplies.

52 Illus., 819 Pages, $12.00

WELCH

Limnological MethodsAn authoritative reference book for separate courses inlimnological methods, or to accompany basic courses inthe subject. Well adapted to a one semester course.

Also serves as a guide for field and laboratory work.

97 Illus., 381 Pages, $7.00

HENRY

The Plant AlkaloidsThis is the fourth edition of the classic chemical refer-ence book in its field. The material is dealt with pri-marily on the basis of chemical classification accordingto nuclear classification. However, this has beenmodified in cases where extensive series, includingseveral chemical types, occurs in one plant or in closelyrelated plants. Cross references are provided, where a

chemical group is dealt with in more than one place.It is, in essence, a detailed reference of literature on

alkaloids, and as such, an invaluable aid to all thosewhose interests lie in this field.

8d4 Pages, $14.00

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Name

City_

BLAIISTON'S NEW GOULDMEDICAL DICTIONARY

This great new dictionary, the only completely NEWUnabridged Medical Dictionary in 38 years, should be

owned by everyone concerned with medicine. Compiledby an editorial board and more than 100 specialists-five years in the making-contains more new words,tables and features than any other medical dictionary,making it the only modern dictionary and the mostconvenient to use. Order your copy for examination.

252 Illus., 1294 Pages, Textbook edition, $8.50-Thin paper edition, $10.75-Deluxe edition, $13.50

SCHOENEWALD New

German-English Medical(Compiled by

Dictionary s. schoenewald, M.D., Berlin)

A scholarly work based on 30,000 pages of Anglo-American medical literature. Illustrates the variousshades of meaning of a word or expression by givingsuitable examples of its use. It is not simply a glossaryor work giving the equivalent words in the two lan-guages, but rather, following the example of the OxfordDictionaries, it is a phrase dictionary, thus providingthe user with a full idiomatic understanding.

241 Pages, $8.50

GRANT

Hackh's Chemical Dictionary3rd Edition

Complete, with new information, thoroughly up-to-date, Atomic Fission, etc., this handy one-volumedictionary covers all branches of modern chemistry andrelated sciences. Concise, understandable definitions are

a feature of the book. Many original tables are in use

by chemists and students. New words, commercialterms.

217 Illus., 925 Pages, $8.50

THE BLAKISTON COMPANY, 1012 Walnut Street, Philadelphia 5, Pa.c send the items checked; my check is enclosed 0; charge my account O. It is understoodyou will credit my account in full for any books that I wish to return within 10 days.Lylor's The Examination of Waters & 0 Blakiston's New Gould Medical Diction.Water Supplies ary; 0 Textbook edition, 0 Thin paper

edition, 0 Deluxe editionelch's Limnological Metbods 0 Schoenewald'senry's The Plant Alkaloids 0 Grant: Hackh's Chemical Dictionary

c Address

ZoneSSta1--4Sci 11-11-49

2 SCIENCE

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SCIENCE (TeihO, ~~~~~~~~~~~~~~~~~GeorgeA. Bail

Vol. 110 No. 2863 Friday, November 11, 1949 Lorin J. Mullir

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F. A. Mo

Psychology and ScientificResearch. II. ScientificInquiry and Scientific Method:

HadleyCantril et al 491

Frederick Gardner Cottrell:1877-1948:Farrington Daniels .. 497

Technical PapersCulture of Fruits in Vitro: J. P. Nitsch .................. 499Separating Frequency Distributions into TwoNormal Components: Arnold Court .................. 500

Combination of Tissues from DifferentSpecies in Flask Cultures:Clifford Grobstein and J. S. Youngner ....... .... 501

Transphosphorylation by Alkaline Phosphatasein the Absence of Nueleotides:

OttoMeyerhof and Harry Green .............................. 503

Hatching Eggs of Floodwater Mosquitoes inMedia that Promote Plant Growth:William R. Horsf .........fal...................... 504

A New Apparatus for Recording of Ecologicand Climatic Factors, Especially Tempera-ture: Eilif Dahl ........ ............................. 506

Cup Assay with Vitamin B12 as a Standard:John C. Foster, John A. Lally, andH. Boyd Woodruff .. ... 507

Aureomycin in the Cultivation of Endamoebahistolytica: Frances W. Fuller and

ErnestCarroll Faust ................. ...................... 509

Comments and CommunicationsThe Structure and Activity Relationships of

the Choline Group of Drugs Determined byMeasurements of Phase-Boundary Potential;Geological Applications of Short Range,Two-Way Radio Sets; Longevity of theTropical American Toad, Bufo marinus L.;Some Problems in Sensory Prosynthesis ...... 511

Scientific Book Register.513

News and Notes 513

Science, a weekly journal founded in 1880, is publishedeach Friday by the American Association for the Advance-ment of Science at the Business Press, 10 McGovern Ave.,Lancaster, Pa. Editorial and Advertising Offices, 1515 Massa-chusetts Ave., N.W., Washington 5, D. C. Telephone, Execu-tive 6060. Cable address, SCIMAG, Washington, D. C.Entered as second-class matter at the Post Office at Lancaster,Pa., January 13, 1948, under the Act of March 3, 1879.Acceptance for mailing at the special rate postage providedfor in the Act of February 28, 1925, embodied in Paragraph4, Sec. 538, P.L. and R., authorized January 13, 1948.

Manuscripts submitted for publication should be sent to theEditorial Office, with stamped, self-addressed envelope en-closed for possible return. The AAAS assumes no responsi-bility for the safety of the manuscripts or for the opinionsexpressed by contributors.Annual subscription, $7.50; singlb copies, $.25: foreign

postage, outside the Pan-American Union, $1.00; Canadian

postage, $.50. Remittances and orders for subscriptions andsingle copies should be sent to the Circulation Department,Science, 1515 Massachusetts Ave., N.W., Washington 5, D. C.Membership correspondence for the AAAS should'be addressedto the Administrative Secretary of the same address.

Change of address. Four weeks' notice is required forchange of address. This should be sent to Science Recorder,1515 Massachusetts Ave,, N.W., Washington 5, D. C. Whenordering a change, it is necessary to furnish an address stencillabel from a recent issue. Claims for a missing number willnot be allowed If received more than 60 days from date ofIssue. No claims allowed from subscribers due to failure tonotify the Circulation Department of a change of address orbecause an Issue is missing from their files, or for any reasonfrom subscribers in Central Europe, Asia, or the PacificIslands (other than Hawaii).The A.AAS also publishes The Scientific Monthly. Subscrip-

tion rates on request.

AAS EDITORIAL BOARDrms BEopire June 30, 1950)tsell H. Bentley Glass

Karl Lark-Horovitzns Malcolm H. SouleHoward A. Meyerhoff

Chairman

Beth WilsonExecutive Editor of Science

vulton, Advertising Representative

SCIENCE November 11, 1949, Vol. 110

Recent textbooksfor science classes

Biology of the VertebratesThird Edition

By Walter and SaylesIn making the revision, Dr. Sayles has kept the flavor of the previous editionswhile bringing all the information up to date. Many new illustrations have beenselected from a variety of sources, and several chapters have been rewritten inthe light of recent research. Published May 1949. $6.00

Laboratory Explorationsin General Zoology

Revised EditionBy Karl A. Stiles

This revision of .a popular manual follows the same general plan of the first edi-tion, with some changes in the order of the material and several new additions.The book has been revised throughout, now offering a wider range of material butretaining the flexibility of the first edition. Published June 1949. $3.25

General Chemistry-A Systematic ApproachBy Sisler, VanderWerf and Davidson

A text for general chemistry courses, this new book emphasizes the modern princi-ples of atomic structure and the nature of the chemical bond. An abundance ofdescriptive, factual material is provided, organized in terms of the theoreticalprinciples involved. Designed for use in all but the most elementary freshmanchemistry courses, it is particularly well adapted for chemistry majors, engineers,premedical, pre-pharmacal, and other technical students. Published September1949. $5.00

College BotanyBy Hylander and Stanley

This new text is designed for a full-year course in general botany. Part I dis-cusses the individual plant and its life problems, using a woody green plant tointroduce the student to the basic facts of plant morphology, histology, and cellstructure and function; Part II deals with plants as groups in our large vegeta-tion complex. Published August 1949. $5.00

THE MACMILLAN COMPANY, 60 Fifth Avenue, New York 11

4 SCIENCE November 11, 1949, Vol. 110

ANOTHER SCORE IN THE

battle of the inchesIt takes many costly buildings to house sourtelephone system. Ever)I inch saved helps keepdown the cost of telephone service. So at BellTelephone Laboratories engineers work con-stantly to squeeze the size out of telephoneequipment.

In the picture a new voice frequency ampli-fier is being slipped into position. Featuringa Western Electric miniature vacuum tube,tiny permalloy transformers, and specialassembly techniques, it is scarcely larger thana single vacuum tube used to be. Yet it is ableto boost a voice by 35 decibels. Mounted in a

bay, only tsro feet Wide and 1 11/) feet high. 600of the new amplifiers do work which oncerequired a room full of equipment.

This kind of size reduction throughout theSystem means that more parts can be housedin a given space. Telephone buildings andother installations keep on giving more servicefor their size - and keep down costs.The new amplifiers. which will soon be used

by the thousands throughout the Bell Systemto keep telephone voices up to strength, are butone example of this important phase of Lab-oratories' work.

BELL TELEPHONE LABORATORIES Exploring and Inventing, Devisingand Perfecting, for Continued Improvements and Economies in Telephone Service A /

6 SCIENCE November 11, 1949, Vol. 110

LIPPINCOTTSELECTEDPROFESSIONALBOOKS

new, th edition of an authoritative reference

Fracturesby Paul B. Magnuson, M.D., F.A.C.S., Professor of Bone and Joint Sur.geryand Chairman oftheDepartment, Northewestern UniversityMedical School;and James K. Stack. M.D., F.A.C.S., Assistant Professor of Bone andJoint Surgery, Northwestern University Medical School.

The new 5th Edition reflects authority on treatment of fractures-based on thestudy of the physiology of bone and muscle, pathology of bone and func-tional anatomy.

A new chapter is included on the so-called "farmyard"reduction of fractures, covering certain simple methods of treatment that theauthors feel may be used under almost all circumstances. Revisions are made inthe material on compound fractures and on the treatment of wounds, reflectingthe more extensive use of antibiotics and current findings in the immediateclosure of wounds and the use of full-thickness skin grafts.

Detailed information on the treatment of individualfractures together with the descriptions of fundamental procedures make thebook widely acceptable.New 5th Edition. Approximately 600 Pages. Over 300 Illustrations. $7.00

J. B. Lippincott Company, E. Washington Sq., Philadelphia 5, Pa.

Please send me O Magnuson & Stack, Fractures, $7.00 l

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City, Zone, State ...........I.L Cash enclosed E Charge my account

6 SCIENCE November 11, 1949, Vol. 110

November 11, 1949, Vol. 110

4' wC yen Specklties PvsIiv'LThe Cyck6tron Spaecxtle,.e i sTf- Here a few performance highlights of thefared with pt~id~Ia wo.zcshWiwi*4 fult Cyqlotwo Speciali 410-A Tube-confidence of outstanding performance. It sets * For ALPHA particles from Uranium, 25 pera standard- of sensitivity _ cent of total disintegra-which opens new possi- SPECIFICATIONS tions. For SOFT BETAbilities in radioactivity such as from C14, Fe59research. of Cyclotron.Specialties" TYPE 410-A TUBE and. .35,-36 per cent of.. .:;. - , ;- -; -;---tota[ disintegrations.The unusual capabili-

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cinhes in diameter. (These high efficiencies.e from 0.7 mg. to 2.3 mg. with widows 1.2 to 1.4.

mg. per sq. cm., which istr, 33 in.- Length, 5 in. minimum recommenddn upon request. Muller re-

:;;;QV;*|O~j@s gion;.^backlground of ap-proximaitely one countpersecndwhen ded.* Alsoexcellent for HardBeta.and Gamma. (..Deu~ for satisMiac-.tory life of 1O9 cou

SUnsupported mica window 2!* Window thicknesses availabl

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SCIENCE November 11, 1949, Vol. 110

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SCIENCE November 11, 1949, Vol. 1108