Conduct and its Disorders 

 Biologically Considered 



By CHARLES ARTHUR MERCIER, M.D., F.R.C.P., F.R.C.S., 

 Physician for Mental Diseases to Charing Cross Hospital; Author of 

 "A Textbook of Insanity," "Criminal Responsibility," etc. 



Cloth, 8vo, xxiii + 377 pages, index, $3.25 net; by mail, $3.42 



Although Dr. Mercier's work on Conduct and its Disorders will be of 

 special service to students of mental disease, the subject is one of such wide 

 interest that other readers, less interested perhaps in its scientific aspects, will 

 find the^work full of suggestive information. The author points out that 

 although conduct is what we are all engaged in, from birth to death, and 

 though many departments of conduct are described in many books, there is 

 not in existence, curiously enough, any comprehensive study of conduct as a 

 whole any general view of the field of human activity. It is this gap that 

 Dr. Mercier has set himself to fill by the present work. The principle on 

 which his exhaustive investigation has been made is the biological principle. 

 He has estimated the various modes and phases of human activity in the 

 light of their value in securing the survival of man in the struggle for exist- 

 ence. 



Mendelism 



By R. C. PUNNETT, Fellow of Gonville and Caius College, Cam- 

 bridge; Professor of Biology in the University of Cambridge. 



New edition revised and enlarged. Cloth, I2mo, illustrated, 

 $1.25 net; by mail, $1.38 



" By far the best popular account of Mendelism yet published ... a 

 model of popular scientific writing, recalling Huxley at his best. . . . Another 

 master of popular scientific writing has well characterized Punnett's book as 

 ' an unsurpassed exposition by an expert investigator.' " The Dial. 



" A substantial contribution from one of the most active laboratories of ge- 

 netics, presented in a readable and attractive form." The Nation. 



"As an exposition of Mendelism it is comprehensive, authoritative and 

 clear, and alone in its field." Chicago Evening Post. 



" The book sets forth the theory of Mendelism with exceptional clearness, 

 making it especially valuable for the practical gardener or breeder and the 

 general reader, while it may be used as a textbook in biological courses." 



Springfield Republican. 



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