Note 659 — Chapter IV · RISE OF THE MARRIAGE CONTRACT

Westermarck, op. cit., 240-52, especially 241, 244, 251, 252.

For a comparison of the different theories of sexual selection see Geddes and Thompson, Evolution of Sex, 3-30, who think the truth lies between the views of Darwin and Wallace; Poulton, op. cit., 284-335, who sustains Darwin's view; and Finck, Primitive Love, 229 ff., who attempts "to demolish the theory of sexual selection in reference to the lower races of man as Wallace demolished it in reference to animals." Cf. Espinas, Des sociétés animales, 290 ff.; Brooks, Law of Heredity (1883), 166-241; Groos, Die Spiele der Thiere, 230 ff., 267 ff., who takes a medial position between Darwin and Wallace; Weismann, Studies in the Theory of Descent (London, 1882), I, 161 ff.; Eimer, Die Entstehung der Arten (1888); and Geddes, articles "Reproduction," "Sex," "Variation and Selection," in Encycl. Brit.