New Wiley books for study and reference

COMPARATIVEPHYSIOLOGY

by Bradley T. Scheer, Assistant Professor of Bio-chemistry, University of Southern California.

Material is organized in this book from over 1,000original papers, to make a study of each of the majoranimal phyla. The phylogenetic method is usedthroughout; each section gives for a single phylum,material on nutrition, feeding, digestion, circulation,respiration, metabolism, excretion, regulation of theinternal environment, and the neuromuscular system.Important ecological and evolutionary developmentsare discussed in summaries of each chapter.

Ready in February Approximately 549 pages

Probable price, $5.50

FUNDAMENTALS OFPHOTOGRAPHIC THEORY

by Thomas H. James and George C. Higgins, both ofEastman Kodak Research Laboratories.

A general account, based on fundamental physicaland chemical concepts. Contents include: the- light-sensitive material; photographic emulsion; formationof the latent image; exposure effects; mechanism ofdevelopment; composition and reactions of developer;general kinetics of development; fixing, washing;Sensitometry-exposure and development, density andits measurement, interpretation of sensitometric data;theory of tone reproduction; structure of the developedphotographic image; sensitizing and desensitizing.

Ready in January Approximately 290 pagesProbable price, $4.00

JOHN WILEY & SONS, Inc., 4

Volume 27 of

ORGANIC SYNTHESESAn Annual Publication of Satisfactory Methods for thePreparation of Organic ChemicalsEditor-in-Chief, Ralph L. Shriner, Professor of Or-ganic Chemistry, State University of Iowa.

This series gives the most convenient laboratory

methods for preparing various organic chemical rea-

gents. These methods yield amounts from one-halfpound to five pounds. Nearly every preparation isadaptable to large-scale development. Every experi-

ment has been carried out in at least two laboratories.

December 1947 121 pages $2.25

NOMOGRAPHYby Alexander S. Levens, Associate Professor of Me-

chanical Engineering, University of California at

Berkeley.

This book gives basic information on the theory and

construction of charts involving straight line scales,

curved scales, and combinations of these two. Both

the Cartesian coordinate and the alignment chart are

discussed, with special emphasis on the latter method.

Examples of the uses of these charts are given in a

variety of technical fields, and exercises are includedfor practice.

Ready in January $3.00 176 pages

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TOWARDGENERAL EDUCATIONBy Earl J. McGrath and Others

Here is a thoughtful program of general education

presented in a series of discussions by Earl J. Mc-

Grath, Dean of the College of Liberal Arts, The

State University of Iowa, and nine faculty mem-

bers. With the student as a future citizen as the

focal point of their thinking, the authors deal pri-marily with the elementary knowledge, skills, and

attitudes necessary to fulfilling the responsibilities

of an intelligent and informed citizenship.

To be published in January. $8.00 (probable)

POWDERMETALLURGYBy Paul Schwarzkopf

This important new book for metallurgists is, in

effect, the revised and expanded notebook of one

of the pioneer metallurgists-a man whose life work

has been an integral part of the whole scientific andindustrial development of powder metallurgy. Thisbook contains a great deal of invaluable informa-tion about the industrial processing of metal powd-ers and the products obtainable. It also containsa review of the theories on which powder metallurgyis based.

Published October 28, 1947. $8.00

DYNAMIC ASPECTSOF BIOCHEMISTRY

By Ernest Baldwin

Containing the essential information which has been

established in the last few decades with the most

recent findings in the field, this new text covers the

fundamental aspects of biochemistry in a clear and

lucid manner. It gives a coherent exposition of

the entire subject as well as a critical account of

the facts, and gives a clear picture of the various

phases of metabolism and digestion, and of the

relationship of enzymes to these functions of the

animal body. 27 tables, 34 figures and diagrams.

Published November 18, 1947. $4.00

THE LOGIC OF THESCIENCES AND

THE HUMANITIESBy F. S. C. Northrop

In this outstanding treatise on logic and scientificmethod, the author conceives logic in the broadestpossible manner to include any form of knowing inreligion and art as well as the sciences proper. Hepresents an analysis of the different scientific meth-ods of the natural and social sciences and the hu-manities, and studies each method in connectionwith the specific content of a specific science. Spe-cial attention is given to the scientific method forsolving moral and social problems of value.

Published December 1, 1947. $4.50

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Exposure Determinationin Photomicrography

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Personnel PlacementCHARGES FOR CLASSIFIED

ADVERTISINGRegular setting 10¢ a word. Minimum charge $2.50 foreach insertion. A box number counts as 8 words of theadvertisement (e.g. 25 words plus box number equals 33words). Make checks payable to the AAAS. All inser-tions must be accompanied by correct remittance and sent10 days in advance of publication date to the AdvertisingDepartment, AAAS 1515 Massachusetts Avenue, N. W.,Washington 5, D. E.

POSITIONS OPEN

The California Medical Bureau, Agency for scientific and lay per-sonnel in medicine, biology, chemistry, physics and allied sciences,supplies teachers, research workers, laboratory dieners, skilled officehelp. -Prompt service. Registration free. Your patronage re-spectfully solicited. THE CALIFORNIA MEDICAL BUREAU,Agency, Arcade Medical Center, 696 Colorado Street, Pasadena 1,California.

Biochemist: Ph.D., 28, desires research or teaching fellowship inmedical school, starting September 1948 allowing work toward M.D.At present assistant professor large eastern university; seven yearsvaried research and teaching experience. Box 157A, SCIENCE.

Biologist: Ph.D., experienced, mature man, research fellow. Broadpractical training agriculture, botany, zoology, genetics, premedicalsubjects. Many years successful experience in college teaching,counseling, administration, government. Can organize, developand direct the program of a college or university biology depart-ment in full harmony with modern trends and needs. Now em-ployed. Feel confident there is a post where prospects are better.Work well with others. Available June 1948. Begin summer orfall. Box 155A, SCIENCE.

Research Chemist-Executive. Organic Ph.D., age 41, withthorough research and administrative experience in pharmaceuticaland organic chemical industry. Eight years as director of researchand development with administrative and scientific duties. Re-search supervision or new products development-organic chemi-cals, pharmaceuticals. Box 156A, SCIENCE.

Entomologist: M.S., Age 35. Extensive experience in appliedentomology. Desires position with college, university or industry.Box 158A, SCIENCE.

Psychology and Philosophy-or administrative position. Collegeprofessor, Ph.D., wants opportunity for advancement. Outstand-ing references. Available on agreement. Box 104, Mitchell, SouthDakota.

Psychologist: B.A., M.A., Ph.D. degrees; major in psychology;ten years, director of social science and guidance in public schools;four years, psychologist with large teaching hospital; for furtherinformation, please write Burneice Larson, Director, MedicalBureau, Palmolive Building, Chicago 11.

Young man who has specialized in microbiology is available; M.S.Ph.D., in soil microbiology; experience covers period of nearly tenyears and has been principally in industry; for further information,please write Burneice Larson, Director, Medical Bureau, PalmoliveBuilding, Chicago 11.

POSITIONS OPENAssistant Plant Pathologist: Permanent position with CaliforniaState Department of Agriculture. Requirements: Equivalent tograduation from college with specialization in plant pathology andtwo years of plant inspection and plant disease control work:Qualifying experience may be substituted for education. ContactChas. P. Cusick, Personnel Officer, Department of Agriculture,Room 501, State Office Building #1, Sacramento, California.

Personnel PlacementPOSITIONS OPEN

Post-Doctorate Fellowship, synthetic organic chemistry, at mid-west university, to start immediately. Knowledge of pyridmidineand biochemistry helpful but not required. Salary $3,600-4,000.Send photograph and credentials. Box 144A, SCIENCE.

Positions Open: (a) Pharmaceutical research executive; MiddleWest; (b) Biochemist planning career in biochemistry and inter-ested in obtaining experience m clinical biochemistry, or youngphysician trained in biochemistry and interested in research, forresearch appointment; department of surgery, university medicalschool; $4,000. (c) Associate professor in bacteriology; consider-able experience with virus infections required; Ph.D. or M.D.;$5,000; Middle West. (d) Chemist or pharmacist with executiveability to serve as chief chemist; duties consist of supervising plantpharmaceutical and chemical research including plant analyticaland control laboratories; Ph.D. preferred; East. (e) Chief tech-nician; should be trained especially in either bacteriology or chem-istry; duties include supervising work of six technicians; largegeneral hospital; $3,600-$4,200; Pacific Coast. (f) Professor. ofpharmaceutical chemistry; preferably one who can report February1; university school of pharmacy. S1-2, Medical Bureau (BurneiceLarson, Director) Palmolive Building, Chicago 11.

Bacteriological assistant; aerosol therapy of lungs; work in labo-ratory and wards at Seaview Hospital, Staten Island, N. Y.Write, stating full qualifications, salary expected to Dr. HaroldA. Abramson, 133 East 58th Street, New York dity.Biologist: preferably zoologist or bacteriologist wanted by Easternurban university. Research encouraged. Possible headship ofdepartment. Box 159A, SCIENCE.

Physicist: Ph.D., potential headship of department in Easternurban university. Research opportunities. Salary to $5,000. Box160A, SCIENCE.

Unusual opportunity for the right man as research associate, withspecial training in endocrinology, to collaborate on the physiologi-cal factors underlying the native resistance to infection. Easternuniversity connections. Beginning salary $4,500. Project for atleast three years. Box 161A, SCIENCE.

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BIOLOGISTS WANTEDto staff a new division in the Game andFisheries Branch, Department of Minesand Natural Resources, Province ofManitoba, Canada. Duties will involveoriginal research in the field of fisheriesand wild life management and in work-ing out practical management tech-niques.

Permanent Civil Service positions withsalaries varying from $2,400 to $4,200per annum, depending on qualifica-tions, experience and duties assigned.Apply at once to:

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or, in Canada, to your nearestNational Employment Service office.

These advertisements will be read by more than

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Sell your product or services through an advertisementin these columns.

SCIENCE, 1515 Massachusetts Avenue, N. W.Washington 5, D. C.

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WANTED TO PURCHASE SCIENTIFIC BOOKSAND PERIODICALS

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Journals, Periodicals, sets and runs. Also whole collections pur-chased for cash. J. S. CANNER & COMPANY, 909 BoylstonStreet, Boston 15, Massachusetts.

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Also please send us your want lists.STECHERT-HAFNER, INC., 31 East 10th Street, New York 3.

Summary Tables for Comparative Chordate Anatomyby Professor Harvey De Bruine

2nd edition35 pages-$1.35

order from FOLLETT'S MICHIGAN BOOK STORE322 South State StreetAnn Arbor, Michigan

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THE DISSECTIONOF THE CAT

by HAROLD M. MESSERAssociate Professor of Biology, Gettysburg College

This laboratory manual containing complete direc-tions for dissection and fourteen plates of outlinedrawings for completion and labeling is now avail-able in quantities and may be purchased from theauthor. Price $1.50

plus transportation, with usual discount316 York Street Gettysburg, Pa.

SUPPLIES AND EQUIPMENT

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SCIENCE1515 Massachusetts Avenue, N. W.

Washington 5, D. C.

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