The Descent of Man and Selection in Relation to Sex, Vol. I

by Charles Darwin

[50] ‘Recherches sur les Mœurs des Fourmis,’ 1810, p. 173.

[51] All the following statements, given on the authority of these two naturalists, are taken from Rengger’s ‘Naturges. der Säugethiere von Paraguay,’ 1830, s. 41-57, and from Brehm’s ‘Thierleben,’ B. i. s. 10-87.

[52] ‘Bridgewater Treatise,’ p. 263.

[53] W. C. L. Martin, ‘Nat. Hist. of Mammalia,’ 1841, p. 405.

[54] Quoted by Vogt, ‘Mémoire sur les Microcéphales,’ 1867, p. 168.

[55] ‘The Variation of Animals and Plants under Domestication,’ vol. i. p. 27.

[56] ‘Les Mœurs des Fourmis,’ 1810, p. 150.

[57] Quoted in Dr. Maudsley’s ‘Physiology and Pathology of Mind,’ 1868, pp. 19, 220.

[58] Dr. Jerdon, ‘Birds of India,’ vol. i. 1862, p. xxi.

[59] Mr. L. H. Morgan’s work on ‘The American Beaver,’ 1868, offers a good illustration of this remark. I cannot, however, avoid thinking that he goes too far in underrating the power of Instinct.