[36] This and several other cases are given by Colin, ‘Physiologie Comp. des Animaux Dom.,’ 1854, tom. i. p. 426.
[37] M. Michely de Cayenne, in ‘Bull. Soc. d’Acclimat.,’ tom. viii. 1861, p. 563.
[38] Quatrefages, ‘Unité de l’Espèce Humaine,’ 1861, p. 79.
[39] ‘The American Naturalist,’ April 1874, p. 237.
[40] ‘Flora,’ 1835, B. ii. p. 504.
[41] Alph. de Candolle, ‘Géograph. Bot.,’ tom. ii. p. 1078.
[42] Royle, ‘Illustrations of the Botany of the Himalaya,’ p. 19.
[43] ‘Gardener’s Chronicle,’ 1850, pp. 204, 219.
[44] Rev. R. Everest, ‘Journal As. Soc. of Bengal,’ vol. iii. p. 19.
[45] Youatt on Sheep, 1838, p. 491.