WE oa FM SCIENCENEW SERLIES FRRIDAY, MAY 4 1934 SUTBSCRIPTION, $6.00VOL. 79, No. 2053 F SINGLE COPIES, $.15

-BOOKS-TRUMPER and CANTAROW'S

BIOCHEMISTRY IN INTERNAL MEDICINEThis book gives every chemical fact of value in the practice of medicine. Diabetes,hormones, vitamines are discussed in terms of applied medicine. There is specific helpon the determination of basal metabolic rate; the significance of an increase or a de-crease in that rate is given, for both males and females, and of various ages. There isa fine presentation of blood chemistry. This is a work on the interpretation of biochemistryin terms of internal medicine. It bridges the gap between the laboratory and the bedside.Octavo of 454 pages. By Xax Trumper, Ph.D., Clinical Chemist and Toxicologist; Formerly in Charge of the BiochemicalLaboratories of Jefferson Medical College and Hospital; and Abraham Cantarow, M.D., Instructor in Medicine at Jeffer-son Medical College. With a Foreword by Elmer H[. Funk, M.D., JefTerson Medical College. cloth, $5.50 net

JORDAN'SBACTERIOLOGY

Tenth edition. Dr. Jordan's book embraces theentire field of bacteriology, both pathogenic andnon-pathogenic, with particular emphasis onthe former. First there is a brief history ofbacteriology. Then come chapters on modernlaboratory equipment, methods of studyingbacteria, classification, immunity, and detaileddiscussions of the various types of bacteria.The excellent presentation of the fundamentalsof the subject and the inclusion of non-patho-genic bacteria make this book decidedly help-ful to all those interested in bacteriology.Octavo volume of 819 pages, illustrated. By Edwin 0.Jordan, Ph.D., Professor of Bacteriology at the Universityof Chicago and Rush Medical College. Cloth, $6.00 niet

MacCALLU M'SPATHOLOGYThe finest pathology in the English languagefor years has undergone a thorough revisionand a great improvement for the new (5th)edition. The section on tuberculosis has beencompletely rewritten and many new illustra-tions added. There is an entirely new chapteron disturbances of lipoid metabolism, the sec-tion on the hypophysis has been brought up-to-date and includes discussions of female sexhormonology and the work of Aschheim andZondek.Octavo volume of 1212 pages, with 652 illustrations, 42 incolors. By W. G. MacCallum, M.D., Professor of Pathol-ogy and Bacteriology, Johns Hopkins University MedicalSchool. Cloth, $10.00 net

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

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

o Trumper & Cantarow's Biochemistry in Internal Medicine ...... $5.50 net

r Jordan's Bacteriolog'y ......................$6.00 net n MacCallum's Pathology ....................$10.00 net

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F1 SEND FOR SAUNDERS NEW (1934) ILLUSTRATED CATALOGUEEntered as seoond-class matter July 18, 1928, at the Post Office at Lanoaster, Pa., under the Act of March 3, 1879.

2 SCIENCE-ADVERTISEMENTS VoL. 79, No. 2(

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Whenever You need Biologicalmaterials you may depend on thisCatalog as a reliable, as well asone oF the most complete sourcesof supply. It willprove a valuableaid from the standpoint of econo-my and efficiency. Check yowales now. If you haven't a copyjust ask for Catalog No. 43.

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Instructors who have experienced the difficulties and unsatis-factory results of using cheap, poorly preserved materials fordissection soon find the practice proves to be false econom aswell as a big handicap to efficient teaching. That is why MilvayPreserved Specimens enjoy the growing popularity which is thereward of superior quality and dependability.

Every possible effort and precaution is taken to make certainthat Milvay Specimens are always in perfect condition for dis-section purposes. Wherever possible, animals are procured alive,cared for under natural healthy conditions and killed and pre-served only as the demand warrants. Botanical materials areselected with the greatest of care and only the perfect speci-mens are saved and used for preservation. Wherever circum-stances permit the green algaes and leaves containing chlo-rophyll are preserved by technique which retains their naturalcolors.

The most advanced methods known to eminent Biologistsfor indefinite preservation are used in the Milvay laborato-ries and the skilled technicians employed in this work are con-tinually seeking and adding improvements through constantexperimentation.

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MAY 4, 1934 SCIENCE-ADVERTISEMENTS 3

SCIENCFADVERTISEMENTS

WILEY LABORATORY MILLror the preparation, without loss of moisture from heating, of certain commercial materials for

laboratory analysis

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LABORATORY MILL, Wiley. While originally designied for grinding all kinlds of fertilizer ma-terials, such as tankage, animal hair, fur, hoofs, horns, etc., it is now satisfactorily used for many othermaterials, particularly straw, tobacco stalks, licorice roots, grass, cotton seed, cotton seed cake, cottonseed meal, wheat, corn, oats, corn stalks, chicken feathers, Bakelite, leather, crab shells, dried fish scalesand for shredding agar and gelatine for making culture media.

Gas chemists are using this mill for grinding shavings coated with a mixture of iron oxide, ferroussulphide and free sulphur as taken from the purification uniit which removes H2S from coke oven andwater gas.

Four knives on a revolving shaft work with a shearing action against six which are set in theframe. The screen is dovetailed into this frame so that none of the material comes out of the grindingchamber until it is fine enough to pass through the mesl. Three sieves with screen of J mm, 1 mm and2 mm mesh, respectively, are furnished with each mill. A hinged front permits easy cleaning.

The mill is 21 inches high and occupies a floor space about 14 x 20 inches. Grinding chamber is8 inches inside diameter, with knives 3 inches wide. Drawer for ground sample is 7 x 3 x 2j inches andholds 24 oz. liquid measure. Mill should be operated at from 400 to 800 r.p.m. and requires from M to 1h.p. Pulleys are 6 inches in diameter x 2j inches face. Knives should be run in counter-clockwise di-rection. Approxiate shipping weight 210 lbs.

See Samuel W. Wiley, Industrial and Engineering Chemistry, March, 1925, p. 304, and The Ameri-can Fertilizer, February 7, 1925; K. Maiwald, Die Landwirtschaftlichen Versuchs-Stationendes Deutschen Reiches, 1928, p. 15; I. D. Clarke and R. W. Frey, The Journal of the American LeatherChemists Association, Vol. XXIII, No. 9 (September, 1928), p. 412; and Carl R. Blomstedt, "A RapidMoisture Test for Wood," Paper Trade Journal, Vol. XCII, No. 18 (Apr. 30, 1931), p. 43.

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4 VOI,. 79, No. 2053

MAY 4, 1934 SCIENCE-ADVERTISEMENTS

CONTENTS FOR APRILTHE CONTRIBUTIONS OF SCIENCE TO IN-

CREASED EMPLOYMENT:SCIENCE MAKES JOBS. PRESIDENT K. T.

COMPTON.SCIENCE AND INDUSTRY. DR. FRANK B.

J EWETT.THE SERVICE OF SCIENCE. DR. R. A.

MILLIKAN.SCIENTIFIC DEVELOPMENTS AND

THEIR APPLICATIONS. DR. W. D.COOLIDGE.

RACING CAPACITY IN THE THOROUGH-BRED HORSE, PART II. DR. H. H.LAUGHLIN.

THE NEW ZEALAND FOREST. PROF. V. W.JACKSON

THE ENTOMOLOGICAL SOCIETY OF LON-DON. PROF. T. D. A. COCKERELL.

A POSSIBLE INTERPRETATION OF THEQUANTUM. PROF. W. P. MONTAGUE.

AIR "FLIVVERS." DR. EDWIN G. DEXTER.SCIENCE SERVICE RADIO TALKS:

SEEDS. PROF. J. T. BUCHHOLZ.THE INVISIBLE FRONTIER-OR FIVE

MILES UNDERGROUND. DR. W. T.THOM.

NO ONE NEED HAVE SCARLET FEVER.DR. GLADYS H. DICK.

SPEED AND ITS SIGNIFICANCE INCHEMISTRY. PROF. HUGH. S. TAYLOR.

THE TELEPHONE POLE AND THE MUSH-ROOM. DR. R. H. COLLEY.

THE PROGRESS OF SCIENCE:William Morris Davis, an Appreciation; TheAward of the Willard Gibbs Medal to Dr.Urey; Statistical Charts regarding . Employ-ment Exhibited at the New York Museum ofof Science and Industry.

CONTENTS FOR MARCH

THE PR,OBLEMS OF THE DESERT. DR.FORREST SHREVE.

RACING CAPACITY IN THE THOROUGH-BRED HORSE, PART I. DR. HARRY H.LAUGHLIN.

THE CONQUEST OF MALARIA. PROF. ARTHURL. BEELEY.

THE ORGANIZATION OF INCA SOCIETY.PROF. GEORGE PETER MURDOCK.

WHERE IS PHYSICS GOING? PROF. R. B.LINDSAY.

MODERN SCIENCE, TH-E HOPE OF CIVILI-ZATION. DR. M. LUCKIESH.

WHAT"S THE MATTER WITH WHEAT DR.C. G. WILLIAMS.

THE SCIENTIFIC JOURNAL, 1665-1730.SHERMAN B. BARNES.

THE :PHYSICAL GOETHE. DR. JAMES FRED-ERICK ROGERS.

SCIENCE SERVICE RADIO TALKS:COLOR CHANGES IN ANIMALS. PROF.

EARLE B. PERKINS.FRIENDLY GERMS. DR. W. LEE LEWIS.MOSSES. DR. A. J. GROUT.

RESEARCH IN THE BUREAU OF DAIRYINDUSTRY. 0. E. REED.

THE PROGRESS OF SCIENCE:The Presentation of the Edison Medal toProfessor Kennelly; Administration of theWeather BEureau; Fritz Haber; Man-Pastarid Present-in the Field Museum; HighAltitude Weather Observations.

THE SCIENCE PRESSGRAND CENTRAL TERMINAL, NEW YORK CITY

5

THE SCIENTIFIC MONTHLYEDITED BY J. McKEEN CATTELL

CONTENTS FOR MAYTHE FAITH OF REVERENT SCIENCE. THE LATE PROF. WILLIAM MORRIS DAVIS.ON THE ABILITY OF WARM-BLOODED ANIMALS TpO SURVIVE WITHOUT BREATHING.

DR. LAURENCE IRVING.A STORY OF THE SHRIMP INDUSTRY. ELMER HIGGINS.THE PLANT COMMUNITIES OF THE DUNES. PROF. GEORGE D. FIULLER.SOMETHING ABOUT THE EARLY HISTORY OF THE MICROSCOPE. GUSTAVE FASSIN.OPTICS AND MODERN PAINTING. DR. ROGERS D. RUSK.THE OCCURRENCE OF OIL AND NATURAL GAS. I)R. FREDERIC H. LAHEE.SCIENCE SERVICE RADIO TALKS:

MEASURING A MILLIONTH OF A SECOND. PROF. J. W. BEAMIS.SLEEP. PROF. S. W. RANSON.TULAREMIA. DR. EDWARD FRANCIS.

CIOMPARATIVE VALUES OF AMERICAN MAMMALS, 1726 AND 1753. LEILA G. FORBES ANDHUGH UPHAM CLARK.

THE PROGRESS OF SCIENCE:The Einstein Institute of Physics at Jerusalem; The Heavy Hydrogen Symposium at the St.Petersburg Meeting of the American Chemical Society; Oskar von Miller; Hazards to AircraftDue to Electrical Phenomena.

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MAY 4, 1934