The Evolution of Marriage and of the Family

by Ch. Letourneau

[5] Audubon, Scènes de la Nature dans les États-Unis, vol. i. p. 383.

[6] Ibid. vol. ii. p. 66.

[7] Darwin, Descent of Man, p. 399.

[8] Ibid. p. 403.

[9] Espinas, Sociétés Animales, p. 326.

[10] Audubon, loc. cit., vol. i. p. 305.

[11] Ibid. vol. ii. p. 50.

[12] Darwin, Descent of Man, p. 438.

[13] Ibid. p. 438.

[14] Darwin, Descent of Man, p. 433.—Espinas, Soc. Animales, p. 326.