January 25, 1946 SCIENCE-ADVERTISEMENTS

PHYSICAL CHEMISTRY FOR PREMEDICAL STUDENTSBy JOHN PAGE AMSDEN, Dartmouth College. International Chemical Series. 315 pages,54 x 84, $3.50

Written especially for a one-semester course for premedi- out problems illustrate each topic treated. Throughoutcal students, this text includes only those portions of ele- the text the Brbnsted concept of acids and bases has beenmentary physical chemistry which will be of value to the used consistently.medical student in his later professional work. Worked

WAVE PROPAGATION IN PERIODIC STRUCTURES. Electric Filtersand Crystal Lattices

By LION BRiLiouIN, Columbia University. International Series in Pure and Applied Physics.247 pages, 54 x 84, 137 illustrations. $3.50

Incorporates a variety of problems linked by a common tures of various kinds, which invariably, whether they aremathematical background, extending from electrical en- electric lines or crystal lattices, behave like band-passgineering to electromagnetism and wave mechanics of the filters.spinning electron. All problems deal with periodic struc-

PIEZOELECTRICITY. An Introduction to the Theory and Applications of ElectromechanicalPhenomena in Crystals

By WALTER G. CADY, Wesleyan University. International Series in Pure and Applied Physics.854 pages, 54 x 84, 173 illustrations. $9.00

A comprehensive treatise covering the entire field of mental principles, the author deals with all phases ofpiezoelectricity, including related areas of elasticity, di- piezoelectric theory and its principal applications.electrics, optics, and magnetism. Beginning with funda-

SEX AND THE SOCIAL ORDERBy GEORGENE G. SEWARD, Simmons College. McGraw-Hill Publications in Psychology. 286pages, 5i x 8. $3.50

Presents a comparative study of the part played by sex of life is shown to be associated with a shift in the bal-in representative social organizations from fish to man. ance between biological and social determiners of sexSex is consistently viewed within the framework of the behavior.society as a whole. Progress from lower to higher forms

ELECTRONS IN ACTIONBy JAMES STOKLEY, author of Science Remakes the World. 309 pages, 5i x 84, 38 pages, ofphotographs and sketches. $3.00

A clear, relatively nontechnical account of what electrons and describes their applications in the many fields ofare, where they come from, and how they are put to work. electronics. Frequency modulation and television areThe author explains the characteristics of electron tubes examined carefully.

MATHEMATICAL THEORY OF ELASTICIIYBy I. S. SOKOLNIKOFF, University of Wisconsin. 373 pages, 6 x 9, 59 illustrations. $4.50

Exceptionally thorough and compact, this lucid treatment problems on extension, torsion, and flexure of isotropiccovers the basic theory of mechanics of deformable media. cylindrical bodies and with variational methods in theAfter a discussion of the mathematical theory of elastic- theory of elasticity.ity, the author deals with-the application of the theory to

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9

SCIENCE-ADVERTISEMENTS

PERSONNEL PLACEMENTA New Advertising Service of Science

In February, 1945, Science inaugurated a classified advertising section under the titleIn The Market Place to carry short notices about supplies, equipment, books, and positionsopen and wanted. Nearly a year has passed and the use which the readers have made ofthis section amply justifies its continuance. Now, in recognition of the growing need forone central location which can be used by all scientists and the universities and industrialorganizations for personnel matters, Science announces that it will begin a separateclassified section in the March 1, 1946 issue known as Personnel Placement. In The MarketPlace will continue as a companion section for announcing needs for and availability ofmaterials, supplies, and books. The rates for both sections will be the same, 10 cents aword, with a minimum of $2.00, cash with order.

Many scientists are now being demobilized from the armed forces. Coincident withthis, the colleges and universities, because of unprecedented enrollments, are facing anacute shortage of instructional personnel. Industry, too, has great need for scientificpersonnel for. the development of new products. Science because of its wide circulationand wide coverage of all branches of scientific activity is a logical medium for publicizingnotices of positions open and wanted.

The March 1 issue of Science presents an excellent opportunity for starting this service,since the issue will be devoted largely to the meetings to be held in St. Louis, March 27-30.Scientists looking for positions and organizations planning to have representatives at themeetings to discuss personnel problems will find it particularly advantageous to publishnotices in this issue and those of March 8 and 1 .

Notices which are scheduled to appear in all three issues may usethe following special box addresses in place of the usual one at theregular box charge of 8 words:

For individuals: "Will be attending St. Louis meeting. Ar-range interview through Box ...., Science."

For organizations: "Representative will be in attendance at St.Louis meeting. Arrange interview throughBox. , Science."

All orders and copy to be inserted in the first issue of Personnel Placement must reachthe Association's Advertising Department, Massachusetts and Nebraska Avenues, N. W.,Washington 16, D. C., not later than February 15, 1946.

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SCIENCE-ADVERTISEMENTS

INAUGURA TING-

Journal of

POLYMER RESEARCH

Editorial Board:P. M. DOTY H. MARK C. C. PRICE

ADVISORY BOARD:P. D. BARTLETT

W. E. BUSSE

C. C. DAVIS

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M. L. HUGGINS

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THE SVEDBERG

G. S. WHITBY

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K. H. MEYER

Manuscripts should be submitted to the Editorial Office, Polymer ResearchInstitute, Polytechnic Institute of Brooklyn, Brooklyn 2, New York.

The JOURNAL will appear bimonthly, beginning January, 1946. The 1946 volume willcomprise about 640 pages.

Subscription price: $8.50 per year. (Postage free in the U.S.A. Foreign Postage, includingCanada $1.00.)

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January 25, 1946 11

SCIENCE-ADVERTISEMENTS Vol. 103, No. 266512

SCIENCEc-ADVERTISEMENTS

FOUNDATIONSOF BIOLOGYBy L. L. Woodruff

"I know of no better text for funda-mentals, for a cultural education, or asa stimulus for more study in the bio-logical sciences.''-W. R. Hunt in TheYale Journal of Biology and Medicine."Thoroughly recommended to all stu-dents and to all general readers."-Isis. 6th Ed.-$3.75MANUAL OF BIOLOGY by G. A.Baitsell-designed especially as a com-panion volume to Woodruff's Founda-tions of Biology but can be used withany other standard text in biology.6th Ed.-$2.75

A TEXTBOOK OFGENERAL BOTANY

By Smith, Gilbert, Evans, Dusgar,Bryan and Allen .

"Can be highly recommended to beused in a one semester or a year's coursein general botany.''-Bios. "Can berecommended with confidence. "-Jl. ofthe N. Y. Botanical Garden. 4th Ed.

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"The authors have selected with greatdiscrimination and have succeeded ingleaning from a wealth of material awell-balanced and well-organized text."--Practical Home Economics. 4th Ed.-3.75

COLLEGE ZOOLOGYBy R. W. Hesner

Well known as the outstanding text inits field this general survey for studentswho will not take advanced work is herehappily combined with detailed instruc-tion sufficient for those who will. 5thEBd.-$3.75LABORATORY DIRECTIONS INCOLLEGE ZOOLOGY by H. L.Bruner -corresponds with Hegner'sCollege Zoology but is sufficiently de-tailed and comprehensive for use withstandard texts other than Hegner's.3rd Ed.-$1.75

LABORATORYEXPLORATIONS INGENERAL ZOOLOGY'

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January 25, 1946 is

SCIENCE-ADVERTISEMENTS Vol. 103, No. 2665

Experimental Spectroscopy- SawyerClarity of explanation and meticulous treatment of detail aretwo of the factors that make EXPERIMENTAL SPECTROS-COPY a valuable reference work for the practical spectrosco-pist. The emphasis on the principles and techniques fundamen-tal to all uses of equipment increases its significance as a text.

Write to Dept. P-757 for your copy. Trade list $5.00(Special price and quantity discount for classroom use)

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January 25, 1946 SCIENCE-ADVERTISEMENTS

I N T H E M A R K E T P L A C ERATES to be paid in advance. Regular setting 10¢ a word, minimum charge $2.00 each; count 8 words if a box address is used.Display, 3 inches maximum, $8.80 per column inch. No discounts or commissions.SEND advertisements with remittance to the ADVERTISING DEPARTMENT, American Association for the Advancement of Science,AMERICAN UNIVERSITY, MASSACHUSETTS AND NEBRASKA AVENUES, WASHINGTON 16, D. C. Correct remittancemust accompany instructions and copy and advertisements will be published in sequence of completed orders.

REPLIES to box number advertisements should be sent to the Advertising Department for forwarding.BOOKSELLERS

Journals, Perlodicals, Serial Publications-Sets, runs andsingle volumes bought and sold. Entire libraries purchased.J. S. CANNER COMPANY, Boston 15, Mass.Wanted to purchase-Scientific Periodicals, sets and runs,Foreign-Doniestlc. Entire libraries and smaller collections.WALTER J. JOHNSON, 125 East 23rd Street, New York 10,N. Y.

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