[64] Ibid. p. 177.

[65] "Malay Archipelago," vol. i. p. 439.

[66] "Natural Selection," p. 177.

[67] "Origin of Species," 5th edition, p. 166.

[68] Vol. ii. p. 280.

[69] See "Natural Selection," p. 64.

[70] The italics are not Mr. Wallace's.

[71] "Malay Archipelago," vol. ii. p. 150; and "Natural Selection," p. 104.

[72] See "Malay Archipelago," vol. ii. chap. xxxviii.

[73] Loc. cit. p. 314.