64 ESSAYS OF A BIOLOGIST 



Carr-Saunders, A. M., '11. "The Population Problem." 

 Oxford, 1922. 



Castle, et al, '12. "Genetics and Eugenics." Chicago, 

 1912. 



Conklin, E. G. "Heredity and Environment in the De- 

 velopment of Man." London, 1922. 



Darwin, C. "The Origin of Species." 



"The Descent of Man." 



Dendy, T4. "Outlines of Evolutionary Biology." Lon- 

 don, 1914. 



Hobhouse, L. T., '19. "Development and Purpose." 

 London, 1919. 



Huxley, J. S., '12. "The Individual in the Animal King- 

 dom." Cambridge, 1912. 



T. H. "Evolution and Ethics." Collected Essays, 



vol. ix. London, 1906. 



Inge, W. R., '20. "The Idea of Progress." Romanes 

 Lectures. Oxford, 1920. 



James, W., '02. "Varieties of Religious Experience." 

 London, 1902. 



Kohler, W., '21. 'Intelligenzprufungen an Menschen- 

 affen." Berlin, 1921. 



Lloyd Morgan, C, '20. "Animal Behaviour." London, 

 1920. 



Loeb, J., '18. "Forced Movements, Tropisms, and Ani- 

 mal Conduct." Philadelphia, 1918. 



Lull, '17. "Organic Evolution." New York, 1917. 



M'Dougall, W., '11. "Body and Mind." London, 1911. 



Osborn, H. P., '10. "The Age of Mammals." New 

 York, 1910. 



Shipley and MacBride, '20. "Zoology." Cambridge, 

 1920. 



