FIFTY YEARS OF DARWINISM 



Comprising the eleven addresses in honor of Charles Darwin 

 delivered January, 1909, before the American Association 

 for the Advancement of Science. $2.00 net; by mail $2.16. 



CONTENTS: Introduction, T. C. Chamberlin; Fifty Years of Darwin- 

 ism, E. B. Poulton; The Theory of Natural Selection from the Stand- 

 point of Botany, J. M. Coulter; Isolation as a Factor in Organic 

 Evolution, D. S. Jordan; The Cell in Relation to Heredity and Evo- 

 lution, E. B. Wilson; The Direct Influence of Environment, D. T. 

 MacDougal; The Behavior of Unit-Characters in Heredity, W. E. 

 Castle; Mutation, C. B. Davenport; Adaptation, C. H. Eigenmann; 

 Darwin and Paleontology, H. F. Osborn; Evolution and Psychology, 

 G. Stanley Hall. 



KELLOGG'S DARWINISM TO-DAY 



By VERNON L. KELLOGG, Professor in Stanford University. 

 $2.00 net; by mail $2.16. 



A simple and concise discussion for the educated layman of present- 

 day scientific criticism of the Darwinian selection theories, together 

 with concise accounts of the other more important proposed auxiliary 

 and alternative theories of species-forming. 



Its value cannot be over-estimated. A book the student must have 

 at hand at all times, and it takes the place of a whole library. No 

 other writer has attempted to gather together the scattered literature 

 of this vast subject, and none has subjected this literature to such 

 uniformly trenchant and uniformly kindly criticism. An investigator 

 of the first rank, and master of a clear and forceful literary style. 

 President D. S. Jordan in the Dial. 



LOCY'S BIOLOGY AND ITS MAKERS 



By WILLIAM A. LOCY, Professor in Northwestern University. 



$2.75 net; by mail $2.88. 



An untechnical account of the rise and progress of biology; written 

 around the lives of the great leaders, with bibliography and index. 

 The 123 illustrations include portraits, many of them rare, of nearly 

 all the founders of biology. The book is divided into two parts, 

 Part I dealing with the sources of biological ideas except those of 

 Organic Evolution, and Part II devoting itself wholly to Evolution. 



It is entertainingly written, and better than any other existing single 

 work in any language, gives the layman a clear idea of the scope 

 and development of the broad science of biology. Dial. 



HENRY HOLT AND COMPANY 



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