Why We Behave 



Like Human Beings 



By George A. Dorset, ph.d. ll.d. 



Formerly Curator of Anthropology. 

 Field Museum and Associate Professor 

 of Anthropology, University of Chicago 



John B. Watson, author of "Behavior- 

 ism" says: "It focuses for the first time 

 the light of science upon the weak and 

 shivering organic unit we call man. 

 Only a man who has spent his life 

 studying man in the jungle as well as 

 in the drawing rooms and cafes could 

 write such a book. $3.50. 



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Write for pamphlet. 



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HaRKY HiBSCHMAN, LL.D. 



Lecturer and Writer 



Available for Lectures and Debates on 

 EVOLUTION 



and kindred subjects. Recently broad- 

 fast a series of debates over WEAP 

 and other stations; formerly practiced 

 law on the Pacific Coast; but since 

 1917 has devoted his time exclusively 

 to the platform and pen. 



Address care of EVOLUTION, 

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CHEMISTRY TO CONTROL 

 LIFE 



'"TPllE chemist of the future will turn 

 from his humble task of providing 

 the conveniences of life and gain control 

 of life itself." 



It was Dr. Edwin E. Slosson, director 

 of Science Service, speaking before a 

 group of psychologists gathered from 

 many parts of the world for conference 

 at Wittenberg College, Springfield, Ohio. 



"The chemist of the future."" continued 

 Dr. Slosfon. "may mould stature and char- 

 acter as the sculptor moulds his clay. The 

 factors of heredity and the origin of species 

 when you get doivn to bed rock, are 

 chemical problems. What we value as 

 individuality — fascinating temperaments, 

 charms of vivacity, woe and sympathy — 

 are all due to definite hormones, some nf 

 which are already known chemical com- 

 pounds. 



"Courage is not a matter of 'sand' but 

 of sugar. Diabetic patients who are 

 gripped with a form of fear from an over- 

 dose of insulin may have their courage 

 immediately restored by sucking a lolly- 

 pop. A variation of a few hundredths of 

 one per cent, in the glucose of the blood 

 may make the difference between coward- 

 ice and courage, may determine whetlier 

 a man shall be shot as a slacker or mcdaled 

 as a hero." 



By HCNSHA^V WARD 



Author of Evolution for John Doe 



CHARLES 

 DARWIN 



The Man and His Warfare 

 A truly noble human 

 soul stands forth in 

 clean-cut perspective. 

 — Professor A. G. 

 Keller of Yale. 

 Wustrated. |5_qq 



By ALBEKT 

 EDW.4RD WIGGAM 



Author of 

 New Decalogue of Science 

 Fruit of the Family Tree 



l\\e Next Age 

 o\ Man 



The best thing that 

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 — Christian Century. 



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By FLOYD L. DARROW 



af^STORYo/ 

 CHEMISTRY 



A masterpiece in 

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By DAVID ST.\RR JORD.AN 



The Higher 

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A delightful human- 

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Publishrr.<t - - Indianavolis 



