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NEW EXPERIMENTALPSYCHOLOGY HANDBOOK

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PRINCIPLES OFHUMAN GEOGRAPHY

Modernized Edition Out in JuneCompletely revised by Earl B. Shawof the Department of Geography ofState Teacher's College, Worcester,Mass., this book was originallywritten by the late Ellsworth Hunt-ington of Yale University. Plungesdirectly into the meat of the book-the relation of the physiographicenvironment to man's activities andemphasizes the effects of the phys-ical environment rather than thetechnical aspects of the subject. Pre-sents an unparalleled interpretationof the political relationships (do-mestic and foreign) that result fromgeographic conditions. Ready in June

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What GENERAL ELECTRIC People Are Saying

H. A. WINNEVice PresidentENGINEERING STUDENTS: I am much concernedby what seems to be the too general attitude ofthe young men on our college campuses todav.. . . It seems to be a state of mind almostbordering on panic. Often it is an attitude of"what's the use; I'll soon be in the army." Againit is a feeling of rebellion, or of self-pity, becauseof the uncertainty of the future. Certainly thefuture is uncertain-and, may I add, as aluwys.My advice, speaking very bluntly, is: quit

worrying and put your effort into the job imme-diately ahead of you, which is to get just asmuch education as you can....

There is a great need for engineers in indus-try, particularly in industries which producedefense equipment. and the list of industries soproducing is growing at an astounding rate....

Every year our militarv-as well as ourcivilian-materiel becomes more complex tech-nically, requiring more scientific and engineer-ing manhours to develop, build, operate, andservice it. I am not aware that any attempt hasever been made to estimate the amount ofengineering required on the munitions and ma-teriel needed, on the average, for each militaryman actually in the field. I would be willingto bet that the ratio of such a figure for WorldWar IL to the corresponding figure for WorldWar I would be in the hundreds, and I shouldnot be surprised if it were now in the thousands,and it is still going up.A survey recently made by Dean S. C. Hollis-

ter of Cornell revteals some disturbing figures.A simple straight-line extension of the prewardemand for engineers indicates a need for atleast 20,000 technical graduates annually, andthis makes no allowance for the requirementsof the armed forces. Yet, based on the numberof engineering freshmen entering in 1950. we

can expect only 12,000 to 15,000 graduates in1954.Think of our airplanes, our tanks, our guided

missiles, our atomic bombs, our naval vessels,our radar. And not only are engineers neededto develop, design, and produce these devices,but the tools and factories which make themmust also be engineered. And then the use andservicing of such complicated equipment callsfor more engineers in our militarv forces.

I know that . .. you do not want to beslackers. Has the thought occurred to you that,if you have the abilitv and the opportunity topursue your engineering education, you maywell contribute more to your country by doingthat than by dropping out of college and goinointo military servic? . . .

Bills now before the Congress on the matterof military service for our young men giverecognition to the importance of maintaininga flow of men through our scientific, engineer-ing, and medical educational institutions andinto industry, as well as military forces. InWorld War II we paid little attention to thismnost important matter, whereas almost allother countries did implement such a program.Perhaps we were lucky that the war did notlast longer, for then the shortage of engineersin our reconversion effort would have beenmuch more acute.

Now we face the possibilitv of a long, longperiod of heavily armed preparedness, and wedare not stop "the flow of engineers and scien-tists into our economy, even for a year or two.

Princeton UniversityMarch 1, 1951

Pfav ca#s jvud o eo4dw I

G E N E RA L ELECTRIC

SCIENCE, Vol. 113*}Qo.

April 20, 1951 29

J4riculturaf SciencesSWINE PRODUCTIONBy W. E. CARROLL, and J. L. KRIDER, Uni-versity of Illinois. McGraw-Hill Publicationsin the Agricultural Sciences. 490 pages, $5.50

POULTRY HUSBANDRYBy MORLEY A. JULL, University of Maryland.McGraw-Hill Publications in the AgriculturalSciences. Third Edition. 626 pages, $6.00

DESTRUCTIVE AND USEFUL INSECTS.Their Habits and ControlBy C. L. METCALF and W. P. FLINT. Revisedby R. L. Metcalf, University of CaliforniaCollege of Agriculture. McGraw-Hill Publica-tions in the Agricultural Sciences. Third Edi-tion. 1071 pages, $10.00

BREEDING AND IMPROVEMENT OFFARM ANIMALSBy VICTOR ARTHUR RICE, University of Mas-sachusetts, and FREDERICK NEWCOMB AN-DEWS, Purdue University. McGraw-Hill Pub-lications in the Agricultural Sciences. FourthEdition. 782 pages, $7.00

THE CHEMISTRY AND ACTION OFINSECTICIDESBy HAROLD H. SHEPARD, Insecticide Division,U. S. Department of Agriculture. 496 pages,$7.00

PLANT PATHOLOGYBy JOHN CHARLES WALKER, University ofWisconsin. McGraw-Hill Publication in theAgricultural Sciences. 698 pages, $7.50

MILK AND MILK PRODUCTSBy CLARENCE HENRY ECKLES; WILLESBARNES COMBS, University of Minnesota,and HAROLD MACY, University of Minnesota.McGraw-Hill Publications in the AgriculturalSciences. Fourth Edition. 454 pages, $5.00

ANIMAL NUTRITIONBy L. A. MAYNARD, Cornell University. Mc-Graw-Hill Publications in the AgriculturalSciences. Third Edition. In press

L?acteriologyINTRODUCTION TO THE BACTERIABy C. E. CLIFTON, Stanford University. 521pages, $5.00

IootanyAN INTRODUCTION TO THEEMBRYOLOGY OF ANGIOSPERMSBy P. MAHESHWARI, University of Delhi.McGraw-Hill Publications in the BotanicalSciences. 453 pages, $6.50

FRESHWATER ALGAE OF THEUNITED STATESBy GILBERT M. SMITH, Stanford University.McGraw-Hill Publications in the BotanicalSciences. Second Edition. 719 pages, $10.00

PHYSIOLOGY OF THE FUNGIBy VIRGIL G. LILLY, West Virginia Univer-sity, and HORACE L. BARNETT, West VirginiaUniversity. McGraw-Hill Publications in theBotanical Sciences. Ready in July

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LABORATORY EXPERIMENTS INGENERAL CHEMISTRY ANDQUALITATIVE ANALYSIS

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CHEMICAL KINETICSBy KEITH J. LAIDLER, The Catholic Univer-sity of America. International ChemicalSeries. 408 pages, $6.00

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TEXTBOOK OF BIOCHEMISTRYBy PHILIP H. MITCHELL, Brown University.Second Edition. 696 pages, $6.50

PRINCIPLES OF SPECTROCHEMICALANALYSISBy NORMAN H. NACHTRIEB, The Universityof Chicago. 324 pages, $4.75

PRINCIPLES OF CHEMICALTHERMODYNAMICSBy MARTIN A. PAUL, Triple Cities College ofthe State University of New York. Interna-tional Chemical Series. 740 pages, $7.50

QUANTITATIVE ANALYSIS.A Theoretical Approach

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THE ELEMENTS OF FRACTIONALDISTILLATIONBy CLARK S. ROBINSON and EDWIN R. GILLI-LAND, Massachusetts Institute of Technology.

SCIENCE, VoL 11330

Chemical Engineering Series. Fourth Edi-tion. 492 pages, $7.00

EXPERIMENTS IN BIOCHEMISTRYBy M. S. DUNN, University of California,and WILLIAM DRELL, California Institute ofTechnology. In press

LIQUID EXTRACTIONBy ROBERT E. TREYBAL, New York Univer-sity. Chemical Engineering Series. 422 pages,$7.50

PRINCIPLES OF PHASE EQUILIBRIABy F. E. W. WETMORE, University of To-ronto, and D. J. LERoY, University of To-ronto. International Chemical Series. 200pages, $3.50

6Jduca lionMETHODS AND MATERIALS FORTEACHING GENERAL ANDPHYSICAL SCIENCEBy JOHN S. RICHARDSON and G. P. CAHOON,The Ohio State University. 501 pages, $4.50

ELEMENTARY SCIENCE EDUCATION.In American Public SchoolsBy HARRINGTON WELLS, University of Cali-fornia. McGraw-Hill Series in Education. 333pages, $3.75

3Sos"VINTRODUCTION TO AMERICANFORESTYBy SHIRLEY W. ALLEN, University of Michi-gan The American Forestry Series. SecondEdition. 413 pages, $5.00

PRINCIPLES OF SILVICULTUREBy FREDERICK S. BAKER, University of Cali-fornia. The American Forestry Series. 414pages, $5.00

FOREST MENSURATIONBy DONALD BRiUCE and FRANCIS S. SCHU-MACHER, Duke University. The AmericanForestry Series. Third Edition. 483 pages,$5.00

FOREST PRODUCTS. Their Sources,Production, and UtilizationBy A. J. PANSHIN, Michigan State College;E. S. HARRAR, Duke University; W. J. BAKERand P. B. PROCTOR, Oregon Forest ProductsLaboratory. The American Forestry Series.549 pages, $6.00

j;ndic.PRINCIPLES OF GENETICSBy E. W. SINNOTT, Yale University; LESLIEC. DUNN, and THEODOSIUS DOBZHANSKY,

Columbia University. McGraw-Hill Publica-tions in the Botanical Sciences. Fourth Edi-tion. 510 pages, $5.25

ot9apGyASIA'S LANDS AND PEOPLESBy GEORGE B. CRESSEY, Syracuse University.McGraw-Hill Series in Geography. SecondEdition. 597 pages (textbook edition) $7.00

ADVANCED ATLAS OF MODERNGEOGRAPHYBy JOHN BARTHOLOMEW, The GeographicalInstitute, Edinburgh. 154 pages, (textbookedition) $6.00

9eologyGUIDE TO GEOLOGIC LITERATUREBy RICHARD M. PEARL, Colorado College.239 pages, $3.75

ELEMENTS OF OIL RESEVOIRENGINEERINGBy SYLVAIN J. PIRSON, Stanolind Oil and GasCompany. 441 pages, $7.00

PRINCIPLES OF PETROLEUM GEOLOGYBy WILLIAM L. RUSSELL, Texas A. and M.College. Ready in May

IGNEOUS AND METAMORPHICPETROLOGYBy FRANCIS J. TURNER and JEAN VER-HOOGEN, University of California. 490 pages,$9.00

MINERALOGYBy EDWARD H. KRAUS; WALTER. F. HUNT;and LEWIS S. RAMSDEL, University of Mich-igan. In press

JleatAh Science6PHYSICAL EDUCATION. Foundations andPrinciplesBy CLIFFORD L. BROWNELL and E. PATRICIAHAGMAN, Columbia University. McGraw-HillSeries in Health Education, Physical Educa-tion, and Recreation. In press

PEDIATRIC ALLERGYBy ROBERT CHOBOT, M.D., New York Uni-versity-Bellevue Medical Center. 284 pages,$4.50

HUMAN PHYSIOLOGYBy BERNARDO A. HOUSSAY, M.D.; JUAN T.LEWIS, M.D.; OSCAR ORIAS, M.D.; EDUARDOBRAUN MENENDEZ, M.D.; ENRIQUE HUG,M.D.; VIRGILIo G. FOGLIA, M.D.; and LUISF. LELOIR, M.D. 1118 pages, $14.00

April 20, 1951 31

FOUNDATIONS OF COMMUNITYHEALTH EDUCATIONBy ROBERT G. PATERSON. McGraw-HillSeries in Health Education, Physical Educa-tion, and Recreation. 288 pages, $3.75

YELLOW FEVEREdited by GEORGE K. STRODE, M.D., TheRockefeller Foundation. 711 pages, $9.50

fMathematiceELASTICITY. Proceedings of Symposia inApplied Mathematics. Volume III.

Edited by R. V. CHURCHILL, University ofMichigan. 235 pages, $6.00

INTRODUCTION TO STATISTICALANALYSISBy WILFRID J. DIXON and FRANK J. MAS-SEY, University of Oregon. 370 pages, $4.50

HIGH SPEED COMPUTING DEVICESBy the combined staff of ENGINEERING RE-SEARCH ASSOCIATES. 451 pages, $6.50

ELEMENTS OF ORDINARYDIFFERENTIAL EQUATIONSBy MICHAEL GOLOMB and M. E. SHANKS,Purdue University. International Series inPure and Applied Mathematics. 366 pages,$3.75

CALCULUS AND ANALYTIC GEOMETRYBy C. T. HOLMES, Bowdoin College. 416pages, $4.75

THEORY OF PROBABILITYBy M. E. MUNROE, University of Illinois. 213pages, $4.50

FOURIER TRANSFORMSBy IAN SNEEDON, University of Glasgow.International Series in Pure and AppliedMathematics. 542 pages, $10.00

fflseoro/ofYMETEOROLOGY. With Marine ApplicationsBy WILLIAM L. DONN, Brooklyn College.Second Edition. 465 pages, $5.50

1h5e %Kaddaceu4eth 3JdllufEof 2cenooqy Radliation

.aloraloqy S.iesThe publication of the following volumescompletes the MIT Radiation LaboratorySeries, numbering twenty-seven volumes andbased upon information accumulated duringthe war in the field of microwave radar. Thesubject matter has been so treated that its

applicability includes virtually all fields ofelectronics.

PROPAGATION OF SHORT RADIOWAVES. Volume 13

Edited by DONALD E. KERR, The Johns Hop-kins University. 715 pages, $10.00

WAVEGUIDE HANDBOOK. Volume 10Edited by N. MARCUVITZ, Polytechnic In-stitute of Brooklyn. 430 pages, $7.50

flatlnai flue/leaP en yy SuPs6The National Nuclear Energy Series, nowin preparation, is a record of the researchwork done under the Manhattan Project andlater under the Atomic Energy Commission.It is the purpose of this series to serve as arecord of the scientific and technical con-tributions revealed in the study of the utili-zation of atomic energy for military pur-poses. When completed the Series will con-sist of more than sixty volumes, the most re-cent of which are listed below.

RADIOCHEMICAL STUDIES: The FissionProducts (3 volumes)

Edited by CHARLES D. CORYELL, Mas-sachusetts Institute of Technology, andNATHAN SUGARMAN, Institute for NuclearStudies, The University of Chicago. Volume9, Division IV. 2086 pages, $18.50

BIOLOGICAL STUDIES WITHPOLONIUM, RADIUM, ANDPLUTONIUM

Edited by ROBERT M. FINK, University ofCalifornia at Los Angeles. Volume 3, Divi-sion VI. 411 pages, $3.75

ANALYTICAL CHEMISTRY OF THEMANHATTAN PROJECT: URANIUMAND THORIUM

Edited by C. J. RODDEN, Atomic EnergyCommission, New Brunswick Laboratories.Volume 1, Division VIII. 748 pages, $6.75

INDUSTRIAL MEDICINEEdited by ROBERT S. STONE, University ofCalifornia Medical School, San Francisco.Volume 20, Division IV. In press

TOXICOLOGY OF URANIUMEdited by ALBERT TANNENBAUM, M.D., Di-rector, Department of Cancer Research,Michael Reese Hospital, Chicago, Illinois.Volume 23, Division IV. 333 pages, $3.00

1p9A4ic6THEORY AND APPLICATION OFINDUSTRIAL ELECTRONICSBy JOHN M. CAGE, Purdue University. Mc-

SCIENCE, Vol. 11332

Craw-Hill Series in Electrical and ElectronicEngineering. 290 pages, $4.75

ATOMIC PHYSICSBy WOLFGANG FINKELNBURG, Engineer Re-search and Development Laboratories, FortBelvoir, Va. International Series in Pure andApplied Physics. 491 pages, $6.50

INTRODUCTION TO ELECTRICITYAND OPTICSBy NATHANIEL H. FRANK, Massachusetts In-stitute of Technology. Second edition. 440pages, $5.50

HIGH FREQUENCY MEASUREMENTS.New 2nd editionBy AUGUST HUND. International Series inPure and Applied Physics. 676 pages, $10.00

FUNDAMENTALS OF OPTICSBy FRANcIs A. JENKINS and HARVEY E.WHITE, University of California. Secondedition. 647 pages, $7.00

ELECTRONICSBy JACOB MILLMAN, City College of NewYork; and Samuel Seely, Syracuse University.Second Edition. Ready in May

STAIIC AND DYNAMIC ELECTRICITYBy WILLIAM R. SMYTHE, California Instituteof Technology. International Series in Pureand Applied Physics. Second edition. 616pages, $8.50

QUANTUM THEORY OF MATTERBy JOHN C. SLATER, Massachusetts Instituteof Technology. International Series in Pureand Applied Physics. In press

ASTROPHYSICS: A Topical SymposiumEdited by J. A. HYNEK, Ohio State Univer-sity. McGraw-Hill Astronomical Series. Readyin May

BEGINNING EXPERIMENTALPSYCHOLOGYBy S. HOWARD BARTLEY, Michigan StateCollege. McGraw-Hill Publications in Psy-chology. 483 pages, $4.50

PERSONALITY. A Systematic Theoreticaland Factual StudyBy RAYMOND B. CATTELL, University of Il-linois. McGraw-Hill Publications in Psy-chology. 689 pages, $6.00

RECENT EXPERIMENTS INPSYCHOLOGYBy LELAND W. CRAFTS, New York Univer-

sity, THEODORE C. SCHNEIRLA, AmericanMuseum of Natural History, ELSA E. ROBIN-SON, and RALPH W. GILBERT, New YorkUniversity. McGraw-Hill Publications in Psy-chology. Second edition 417 pages, $3.75

PERSONALITY AND PSYCHOTHERAPYBy JOHN DOLLARD and NEAL E. MILLER,Yale University. McGraw-Hill Publications inPsychology. 483 pages, (text edition) $5.00

EXPERIMENTS IN SOCIAL PROCESSEdited by JAMES GRIER MILLER, The Uni-versity of Chicago. McGraw-Hill Publicationsin Psychology. 205 pages, $3.00

PHYSIOLOGICAL PSYCHOLOGYBy CLIFFORD T. MORGAN and ELIOT STEL-LAR, The Johns Hopkins University. Mc-Graw-Hill Publications in Psychology. Sec-ond edition. 609 pages, $5.50

Social ScienceTHE OPERATIONAL CODE OF THEPOLITBUROBy NATHAN LEITES. The RAND Series. 100pages, $3.00

zoologoyHUMAN BIOLOGYBy GEORGE A. BAITSELL, Yale University.McGraw-Hill Publications in the ZoologicalSciences. 700 pages, $6.00

A SOURCEBOOK IN ANIMAL BIOLOGYBy THOMAS S. HALL, Washington Univer-sity. Source Books in the History of the Sci-ences. 721 pages, $10.00

THE INVERTEBRATES: Volume II. Platy-helminthes and Rhynchocoela. 550 pages, $9.00THE INVERTEBRATES: Volume III. Acan-thocephala, Aschelminthes, and Entoprocta.572 pages, $9.00By LIBBIE H. HYMAN, American Museum ofNatural History, New York. McGraw-HillPublications in the Zoological Sciences.

FUNCTIONAL ANATOMY OF THEVERTEBRATESBy DANIEL P. QUIRING, Western ReserveUniversity. McGraw-Hill Publications in theZoological Sciences. 624 pages, $5.50

ANATOMY OF THE CHORDATESBy CHARLES K. WEICHERT, University ofCincinnati. McGraw-Hill Publications in theZoological Sciences. Ready in June

EVOLUTION. New 2nd editionBy A. FRANKLIN SHULL, University of Michi-gan. McGraw-Hill Publications in the Zoo-logical Sciences. Ready in July

April 20, 1951 33

BOTANYBy J. BEN HILL, Pennsylvania State College;

2N D LEE 0. OVERHOLTS, and HENRY W. POPP,ED ITION Pennsylvania State College. McGraw-Hill Pub-lications in the Botanical Sciences. 695 pages,

$5.50Widely accepted for standard use since publication of the first edi-tion in 1936 and considered the outstanding reference type text forbeginning students.

GENERAL CHEMISTRY3RD By WILLIAM A. I

E D IT ION WATT, University oFELSING and GEORGE W.f Texas. Ready in May

A new revision representing a complete modernization and im-provement of the former edition. Designed to achieve a better cor-relation of laboratory and classroom work.

PnYSicsBy ALEXANDER KOLIN, The University of Chi-cago. 887 pages, $6.50

Unique among first year texts, this volume is arranged according tomethods of treatment and the nature of ideas. Exceptionally adapta-ble and teachable. A concrete approach progressing from funda-mentals to the more abstract concepts.

GENERAL ZOOLOGY2N D By TRACY I. STORER, University of California

E D I T ION at Davis. McGraw-Hill Publications in the Zoo-logical Sciences. Ready in May

A standard text since publication and one of the most widely usedbooks in general zoology since that time. The new edition benefitsfrom the suggestions of teachers. Now completely up-to-date withnotes from latest scientific literature and information.

For careful inspection of these leading textsSend for your copies on approval

SCIENCE, Vol. 113

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PRINCIPLES OFMODERN BIOLOGY

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A thorough revision including new sections on ecol-ogy and evolution and recent research developments.Special emphasis on man.

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BRIEF COLLEGE CHEMISTRYREVISED EDITION

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SPRAGUE-DAWLEY, INC.Pioneers in development of the

standard laboratory ratBox 2071 * Madison 5, Wisconsin * Phone 36134

L-PROLINE-Hydroxyproline, L-Methionine* AMINO ACIDS * BIOCHEMICALS* PRE-MIXED MICROBIOLOGICAL ASSAY MEDIA

H. M. CHEMICAL COMPANY, LTD.144 North Hayworth Avenue Los Angeles 48. California

INDEX of REFRACNON UUIDS-Valuable Aid for Identification of Minerals and other

* Solids by the Immersion Method of Microscopy* Range 1.400-1.700. intervals of 0.002, or as selected

Index Certifled to ± 0.0002* Range 1.71-1.83, Intervals of 0.01

Write for Priee List Nd-SR. P. CARCILLE 118 Liberty Street, New York 6, N. Y.

Brilliant, odjustable,illumination oll-purgosresearch and industry.UNDLY& COi

Opaque a°^se ec pic

&Bincocular |variable intensityg lamps for laboratory,

80 HERRICKS RD.I MINEOLA, N. Y.

I ADnDATInDV AUIAAAICLAMDVEIHVE AMlEAL3 *-

p. Mice, Rats, Hamsters, Guixea Pigs,Rabbits, Cats and Dogs

MANO FAMS*STAATSBURGMANOR FARMS . S T AANEW YORKPurity of Strain Guaranteed

SCIENCE, Vol. 113

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images up to 10 feet acrosseven under oil-immersed objectives The So o light

souree enesntes light-Intonsityofpr@-Because of the virtually solar intensity of the Scopi- t 60 lumns

con's high-pressure mercury arc, you can project sharply T r lgbedetailed images up to ten feet across even under oil- ,i remurka#tye -immersed microscope objectives. The light's white color neither wandrs ;--demonstrates the various biological stains to their best flickers.advantage.

The Scopicon is highly adaptable can be usedwith equal convenience for small-group study in a nor-mally lit room, or for exhibition to large groups in adarkened auditorium. Let us send you the brochuredescribing this versatile instrument.

The Scopiconhigh-pressuremercury arc

lamp.2

SCOPICON, Inc. 215 E. 149th ST. NEW YORK 51, N. Y.

Sp,.........U

For ULTRA=

SRC o o tue. thin enough for o1ectonDa,.I Dr*. ,ase and Aaker,haed tcu~t~~Jtmbiasections cou~1 IthLseea

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