[24] See "Natural Selection," chap. iii. p. 45.

[25] Loc. cit. p. 80.

[26] Ibid. p. 59.

[27] Loc. cit. p. 64.

[28] "Origin of Species," 5th edit. p. 104.

[29] "Animals and Plants under Domestication," vol. ii. p. 351.

[30] Loc. cit. pp. 109, 110.

[31] Heredity is the term used to denote the tendency which there is in offspring to reproduce parental features.

[32] Loc. cit. p. 64.

[33] Loc. cit. p. 60.