RECEIVED

1V-Vo.Tohi-iettF ; SEP2- 1938J r leCxpMB¶'IEXPt. Statlo,

tor,s Offjce

NEW SERIESVOL. 88, No. 2279 FRIDAY, SEPTEMBER 2, 1938 SUBSCRIPTION, $6.00

SINGLE COPIES, .15

NEW SAUNDERS BOOKS based on wideexperience in the classroom-in the laboratory

H arrow's Beck'sNEW Biochemistry Hematologic Technic

JUST Dr. Harrow's entirely new text isREADY! being warmly received by educa-

tors because they have been quickto perceive that here is a book that presents thefundamental facts of biochemistry and their ap-plication in a manner readily comprehensible tostudents. Explanations are full but not wordy.Dr. Harrow's extensive experience as a teacherand as a laboratory worker has enabled him toorganize his subject so thoroughly that the stu-dent is led fully prepared into each succeedingdiscussion.There are individual chapters devoted to thefollowing: Introduction, carbohydrates, lipids,proteins, nucleoproteins (nucleic acids), en-zymes, foods, vitamins, synthesis in the plantkingdom, digestion, detoxication, absorption,blood, chemistry of respiration, metabolism ofcarbohydrates, lipids, and proteins, biologicaloxidations, energy metabolism, inorganic metab-olism (water), chemistry of the tissues, urine,hormones, chemistry of the nervous system. Anappendix is included which gives the nutritivevalue of foods.

In all details this text is abreast of the latestknowledge of the subject and is admirably suitedto today's courses.By BENJAMIN HARROW, PH.D., Chemistry Department, TheCity College, City of New York. Octavo of 383 pages, illus-trated. Cloth, $3.75 net.

J UST This entirely new book is a work-R EADY! ing manual of those hematologic

technics that have proved mostpractical and most successful in actual labora-tory use. But more than that it also includesthe interpretations of the findings of these testsin terms of clinical medicine.

Dr. Beek bases her text on her own extensiveteaching experience and on more than 350,000tests conducted under her personal supervision.Methods of procuring blood specimens, the clot-ting mechanism and estimation of hemoglobin,enumeration of cells and determination of in-dexes (including directions for determiningnormal standards), cytology, special studies inhematology and special blood pathology, are allcovered. Of special importance are the lists ofthose diseases in which each test has pathologicsignificance and in which there is physiologicand pathologic increase or decrease of the vari-ous blood constituents. There is an "Outline"at the head of each chapter, and "Question Re-views" and a "Glossary" follow each chapter.

By REGENA COOK BECK, M.A., M.D., formerly Instructor inPathology and Bacteriology at George Washington Univer-sity MIedical School. Head of the Department of Bacteriol-ogy, William and Mary College Extension. Octavo of 389pages. Cloth, $4.00 net.

..........................SIGN AND MAIL THIS ORDER FORM TODAY.....................................

W. B. SAUNDERS COMPANY, W. Washington Square, PhiladelphiaPlease send me the books checked ( V\) and charge to my account:

1] Harrow's Biochemistry ................................................... $3.75 net

E Beck's Laboratory Manual of Hematologic Technic ..................... ................................................ $4.00 net

NAME ..................................................

Entered as second-class matter July 18, 1923, at the Post Office at Lancaster, Pa., under the Act of March 3, 1879.

2 SCIENCE-ADVERTISEMENTS

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American Men of ScienceA BIOGRAPHICAL DIRECTORY

EDITED BY J. McKEEN CATTELL AND JAQUES CATTELL

The first edition of this BIOGRAPHICAL DIRECTORY OF AMERICAN MEN OF SCIENCEwas published in 1906, the second edition in 1910, the third edition in 1921, the fourthedition in 1927 and the fifth in 1933. The present edition contains the records of about28,000 living men of science, as compared with about 4,000 in the first edition. Nosingle book of reference can cover the whole of North America and all lines of activity;it therefore becomes necessary to prepare special works. This volume, devoted to themen of science, sets standards in its treatment of a group on which the material pros-perity and intellectual leadership of the country depend.

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SEPTEMBU& 2, 1938 SCIENCE-ADVERTISEMENTS 9

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11SEPTEATBER 2, 1938