[34] Hart: The Survey, March 15, 1924.
[35] Platt: The Psychology of Social Life, p. 188.
[36] Baldwin, p. 462.
[37] Baldwin, p. 96.
[38] Singer: Modern Thinkers and Present Problems, p. 289.
[39] Miller: Races, Nations and Classes, p. 14.
[40] Baldwin, p. 61.
[41] Sumner: Folkways, p. 12.
[42] Ellwood, p. 159.
[43] Vincent: American Journal of Sociology, Jan. 1912, p. 471.