[67] See Brehm, Thierleben, ix., p. 252.
[68] An exactly similar case is recorded by Stodmann in his Travels in Surinam, ii., p. 286.
[69] Nature, ix., p. 189.
[70] See Kirby and Spence, vol. ii., p. 229.
[71] Loc. cit., p. 189.
[72] Ibid., p. 119.
[73] Geistesleben der Thiere, pp. 194 and 199-200.
[74] Phil. Trans., loc. cit.
[75] Body and Mind, p. 275.
[76] Nature, xxiii., pp. 149-50.