1 88 THE EVOLUTION OF MAN 



ANGELL, J. R. Chapters from modern psychology. New York, 1912. 



WATSON, J. B. Behavior Introduction to comparative psychology. 

 New York, 1914. 



THORNDIKE, E. L. Animal intelligence. New York, 1911. 



WASHBURN, M. F. The animal mind. 2d ed., New York, 1917. 



JENNINGS, H. S. Behavior of the lower organisms. New York, 1915. 



LOEB, J. Comparative physiology of the brain and comparative psy- 

 chology. New York, 1900. 



Forced movements, tropisms and animal conduct. Philadelphia, 



1918. 



CHAPTER V 



SUMNER, W. G. Folkways. Boston, 1907. 



-Collected Essays. 4 vols. New Haven, 1914-1918. 



What social classes owe to each other. New York, 1911. 



KELLER, A. G. Societal evolution. New York, 1915. 



Through war to peace. 2d ed., New York, 1921. 



Colonization. Boston, 1908. 



BAGEHOT, W. Physics and politics. New York, 1902. 

 DARWIN, C. R. Descent of man. New York, 1898. 

 GALTON, SIR F. Hereditary genius. New York, 1870. 



Essays in eugenics. London, 1909. 



GUMPLOWICZ, L. Der Rassenkampf. Innsbruck, 1883. 



HAYCRAFT, J. B. Darwinism and race progress. 2d ed., New York, 



1900. 



HOLMES, S. J. The trend of the race. New York, 1921. 

 HUXLEY, T. H. Man's place in nature. Collected Essays, New York, 



1901. 

 LIPPERT, J. Kulturgeschichte der Menschheit. 2 vols. Stuttgart, 



1886. 

 SCHALLMAYER, W. Vererbung und Auslese im Lebenslauf der Volker. 



Jena, 1903. 

 SEWARD, A. C. (editor). Darwin and modern science. Cambridge, 



1909. 

 SPENCER, HERBERT. Principles of sociology. 3 vols. New York, 1877- 



1896. 



