[208] Adapted from a translation of Georg Simmel, Soziologie, by Albion W. Small, "The Sociology of Conflict," in the American Journal of Sociology, IX (1903-4), 505-8.
[209] Adapted from William A. White, Thoughts of a Psychiatrist on the War and After, pp. 75-87. (Paul B. Hoeber, 1919.)
[210] From G. T. W. Patrick, "The Psychology of War," in the Popular Science Monthly, LXXXVII (1915), 166-68.
[211] Adapted from Henry Rutgers Marshall, War and the Ideal of Peace, pp. 96-110. (Duffield & Co., 1915.)
[212] Adapted from William H. Hudson, "The Strange Instincts of Cattle," Longman's Magazine, XVIII (1891), 393-94.
[213] Adapted from George E. Vincent, "The Rivalry of Social Groups," in the American Journal of Sociology, XVI (1910-11), 471-84.
[214] Adapted from Franklin H. Giddings, "Are Contradictions of Ideas and Beliefs Likely to Play an Important Group-making Rôle in the Future?" in the American Journal of Sociology, XIII (1907-8), 784-91.
[215] From Robert E. Park, Introduction to Jesse F. Steiner, The Japanese Invasion. (A. C. McClurg & Co., 1917.)
[216] From Robert E. Park, "Racial Assimilation in Secondary Groups," in Publications of the American Sociological Society, VIII (1913), 75-82.
[217] Adapted from Alfred H. Stone, "Is Race Friction between Blacks and Whites in the United States Growing and Inevitable?" in the American Journal of Sociology, XIII (1907-8), 677-96.