The American Naturalist 



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THE SCIENCE PRESS 

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Garrison, N. Y. 



TO ORNITHOLOGISTS 

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Price List (No. 11) of Bird Skins. This 

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ever published. It is arranged in systematic 

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Fifty Years of Darwinism 



of Charles Dar 



8vo, 274 pp. $2.00, net 



CONTENTS : Introduction, T. C. Cham- 

 berlin, Walker Museum ; Fifty Years of Dar- 

 winism, Edward B. Poul ton, Oxford University; 

 The Theory of Natural Selection from the Stand- 



. Con 



ersity 



Factor in Organic 

 Evolution, David Starr Jordan, Stanford Uni- 

 versity ; The Cell in Relation to Heredity and 

 Evolution, Edmund B. Wilson, Columbia Uni- 

 versity ; The Direct Influence of Environment, 

 Dr. D. T. MacDougal, Carnegie Institution of 

 Washington ; The Behavior of Unit-Characters 

 in Heredity, W. E. Castle, Harvard University ; 

 Mutation, Chaa. B. Davenport, Station for Ex- 

 perimental Evolution, Cold Spring Harbor ; 

 Adaptation, Carl H. Eigenmaon, Indiana Uni- 

 versity; Darwin and Paleontology, Henry Fair- 

 field Osborn, Columbia University ; Evolution 

 and Psychology, G. Stanley Hall, Clark Unr 



Henry Holt & Company 



