The Evolution of Marriage and of the Family

by Ch. Letourneau

[55] Ibid. t. ii. p. 70.

[56] Ibid. t. I^er. p. 347.

[57] Audubon, Scènes de la Nature, t. I^er. p. 317.

[58] Darwin, Descent of Man, p. 238.

[59] Espinas, Soc. Animales, p. 448.

[60] Darwin, Descent of Man, p. 238.

[61] Darwin, Descent of Man, p. 443.

[62] Espinas, loc. cit. p. 443.

[63] Houzeau, Facultés mentales des animaux, t. ii. p. 394.

[64] Darwin, Descent of Man, p. 238.