104 ESSAYS OF A BIOLOGIST 



Roux, W., '81. ''Der Kampf der Telle im Organismics." 

 1881. 



Sherrington, '22. "The Advancement of Science, 1922." 

 London, 1922. 



Spencer, Herbert. "First Principles," "Principles of Biol- 

 ogy," "Principles of Sociology." 



Thorndike, E. L., '11. "Animal Intelligence." New 

 York, 1911. 



Trotter, W., *19. "Instincts of the Herd in Peace and 

 War" (2nd Ed.). London, 1919. 



Wells, H. G., '21. "The Outline of History." London, 

 1921. 



I 



