BIBLIOGRAPHY 189 



CHAPTER VI 



BELL, A. G. Is race suicide possible? Jour. Heredity, Vol. 11, 1920. 

 CONKLIN, E. G. The direction of human evolution. New York, 1921. 

 DARWIN, C. R. The origin of species by means of natural selection, 



etc. New York, 1898. 

 The variation of animals and plants under domestication. 2 vols. 



London, 1905. 



The descent of man. 2d ed., New York, 1898. 

 FISHER, I. Impending problems of eugenics. Sci. Monthly, Vol. 13, 



1921. 

 FOREL, A. Human perfectibility in the light of the facts of evolution. 



International Monthly, Vol. 4, 1901. 

 FRANK, T. Race mixture in ancient Rome. Amer. Hist. Review, Vol. 



21, 1916. 

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



Natural inheritance. New York, 1889. 

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

 HUXLEY, T. H. On the natural inequality of men. Collected Essays, 



New York, 1901. 

 KELLICOTT, W. E. The social direction of human evolution. New 



York, 1911. 



METCHNIKOFF, E. The nature of man. Chicago, 1903. 

 MORGAN, T. H. The physical basis of heredity. Philadelphia, 1919. 

 OSBORN, H. F. Men of the Old Stone Age, etc. 3d ed., New York, 



1919. 

 PEARL, R. Vitality of the peoples of America. American Journal of 



Hygiene, Vol. 1, 1921. 



STODDARD, L. The rising tide of color. New York, 1919. 

 YERKES, R. M., et al. Army mental tests. Memoirs Nat'l Acad. 



Sciences, Vol. 15, 1920. 



