[277] Lindsay, Mind in the Lower Animals, i. p. 252, 253; ii. pp. 126, 219, 220; Grant Allen, The Colour Sense, pp. 119, 157, 167; Romanes, Animal Intelligence, p. 247.
[278] Darwin, The Descent of Man, ii. pp. 123-125; Nilsson, Foglarna, i. pp. 202, 206; Lindsay, Mind in the Lower Animals, ii. p. 152; Cornish, Life at the Zoo, pp. 101-103, 105, 106.
[279] Romanes, Darwin, i. p. 381; Büchner, Liebe und Liebes-Leben, p. 52.
[280] Beccari, “Le capanne dell’ Amblyornis inornata,” in Annali del museo civico di storia naturale di Genova, ix. pp. 382-391.
[281] Darwin, The Descent of Man, ii. p. 77.
[282] Cf. especially the dresses of Homophania insectivora, Petasophora cyanotis, and Steganura underwoodi, as depicted in Mulsant, Hist. nat. des oiseaux-mouches, Pl. 62, 91a, 110.
[283] Binet, Le fétichisme dans l’amour, etc., pp. 257 sq. (L’intensité des images mentales).
[284] Groos, The Play of Animals, pp. 243, 283; cf. also Hellwald, Die menschliche Familie, pp. 14-16; Van Ende, Hist. nat. de la croyance, I. L’animal, p. 238.
[285] Darwin, The Descent of Man, ii. pp. 106, 107.
[286] Wallace, Darwinism, pp. 284, 287, 292, 294.