The Evolution of Marriage and of the Family

by Ch. Letourneau

[35] Ibid. p. 244.

[36] Espinas, Soc. Animales, p. 415.

[37] Ibid. pp. 416, 417.

[38] Houzeau, Fac. mentales des animaux, t. ii. p. 380.

[39] Dix-huit ans chez les sauvages, etc., p. 374.

[40] Espinas, Soc. anim., p. 427.

[41] Ibid. p. 421.

[42] Audubon, loc. cit., vol. i. p. 83.

[43] Ibid. t. I^er. p. 292.

[44] Darwin, Descent of Man, pp. 446, 449.