LITERATURE CITED 283 



70. Jordan, David Starr. 1903. The Blood of the Nation; 



a study of the decay of races through the survival 

 of the unfit, Boston: Amer. Unitar. Assoc. 82 pp. 

 1907. The Human Harvest; a study of the decay 

 of nations through the survival of the unfit, 

 Boston: Amer. Unitar. Assoc. 122 pp. 1915. War 

 a7id the Breed; the relation of war to the down- 

 fall of nations, Boston: Beacon Press. 265 pp. 



71. Jordan, D. S., and Jordan, H. E. 1914. War's After- 



math, Boston: Houghton Mifflin. 103 pp. 



72. Katz, D., and Toll, A. 1923. "Die Messung von 



Charakter- und Begabungs-unterschieden bei 

 Tieren (Versuch mit Huhnern)," Zeit. f. Psych. 

 93:287-311. 



73. Kellogg, Vernon L. 1912. Beyond War; a chapter in 



the natural history of man. New York: Holt. 

 172 pp. 



74. Kropotkin, P. 1914. Mutual Aid, a Factor in Evolu- 



tion, 2nd edition. New York: Knopf. 223 pp. 



75. Light, S. F., Hartman, O., and Emerson, O, H. 1938. 



"Social hormones in the termite colony," Unpub- 

 lished. 



76. Livengood, W. 1937. "An experimental analysis of 



certain factors affecting growth of goldfishes in 

 homotypically conditioned water," Copeia 2:81-88. 



77. Maclagen, D. S. 1932. "The effect of population 



density upon rate of reproduction with special 

 reference to insects," Proc. Roy. Soc. B 111:437-54. 



78. Malinowski, B. 1937. "Culture as a determinant of 



behavior," in Harvard tercentenary conference. 

 Factors Determining Human Behavior, Cam- 

 bridge: Harvard University Press. 168 pp. 



79. Mast, S. O., and Pace, D. 1937. "The relation be- 



tween the number of individuals per volume of 

 culture solution and rate of growth in Chilomonas 

 Paramecium/' Anat. Rec. 70, suppl. 40. 1938. 



80. Masure, R. H., and Allee, W. C. 1934. "The social 



