512 READINGS IN EVOLUTION, GENETICS, AND EUGENICS 



THOMSON, J. ARTHUR. Darwinism and Human Life. Henry Holt & Co., 



1909. 

 . Heredity. John Murray, London, 1007. 



WALTER, HERBERT EUGENE. Genetics. The Macmillan Co., 1911. 



WHITMAN, CHARLES OTIS. "The Problem of the Origin of Species." 

 Proceedings of Congress of Arts and Science, Universal Exposition, 

 St. Louis, 1906. 



WRIGHT, SEWALL. Principles of Livestock Breeding. U.S. Dept. Agri- 

 culture, Bull. 905, 1920. 



