SCIENCE 



MAY 1 ][ 



vo^ !T'Z ,s2, Friday, May 7, 1920 ^ingl, copies, is cts. 



YOU lil, DO. 1323 » ' Anmual Subscbiptioh, ««.08 



Pearl's The Nation's Food 



JUST OUT 



Dr. Pearl's book constitutes a definite piece of statistical research relating to the food resources 

 of the United States. It gives a critical survey of the production of the primary and secondary 

 food materials separately, then combines the two and puts the material in such form as to make 

 possible certain general conclusions regarding the total production of human food in this country. 

 Then is considered the proportionate contribution as primary and secondary food to the total 

 nutritional production; the relation of production to population; the relative nutritional import- 

 ance of the production of different commodity groups, and single commodities — a consideration 

 of the relative nutritional importance of the production of individual commodities used as human 

 food; the human food materials which come into this country in the way of imports; relative 

 proportion of the total nutritional intake furnished by the several commodity classes. 

 By Raymond Peahl, Ph.D., Sc.D., LL.D., Professor of Biochemistry and Vital Statistics, Johns Hopkins University. 

 Octavo of 374 pages, with charts. Cloth, $3.5o net. 



Lusk's Science of Nutrition third edition 



Professor Lusk points out why certain diseases are due to metaboUc derangements. He teaches 

 you how to correct these derangements. He gives you the very foundation of dietetics — the 

 fundamentals upon which a scientific and beneficial dietary regimen may be built. Important 

 chapters are those on food economics, food requirements for various occupations. 

 Octavo of 64o pages. By Grahau Lusk, Ph.D., Professor of Physiology, Cornell Medical School. Cloth, $5.oo net. 



Smith and Hedges on Pasteur just out 



This is a biography of Pasteur's mind. It is not a biography of Pasteur the man, but of Pasteur 

 the savant — the scientific worker and thinker. It shows the development of the Pasteurian 

 theories and experiments and their far-reaching influence. The intimate association of the 

 biographer with Pasteur, as organizer and co-worker in the foundation and management of the 

 Pasteur Institute, eminently fitted him for this labor. 



Octavo of 363 pages, illustrated. By Emile Duciaux. Translated and edited by Erwin F. Smith, Ph.D., and 

 Florence Hedges, Ph.D., Pathologists of the U. S. Department of Agriculture. Cloth, $5.oo net 



Barton's Teaching the Sick recent 



Tit. Barton's book is based on personal experience. In it he tells you not only what to teach the 

 sick, but how to teach them — how to lead the patient from the most simple exercise to the plan- 

 ning and construction of buildings in the open. 

 By George Edward Barton, A.I.A., Consolation House, New York. lamo of i63 pages, illustrated. 



Cloth, $i.&o net. 



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