[5] Youatt, pp. 19, 234.

[6] ‘The Poultry Book,’ by Mr. Tegetmeier, 1866, p. 231.

[7] Loudon’s ‘Gardener’s Mag.,’ vol. x., 1834, p. 396: a nurseryman, with much experience on this subject, has likewise assured me that this sometimes occurs.

[8] ‘Gardener’s Chronicle,’ 1855, p. 777.

[9] Ibid., 1862, p. 721.

[10] Mr. Boner speaks (‘Chamois-hunting,’ 2nd edit., 1860, p. 92) of sheep often running wild in the Bavarian Alps; but, on making further inquiries at my request, he found that they are not able to establish themselves; they generally perish from the frozen snow clinging to their wool, and they have lost the skill necessary to pass over steep icy slopes. On one occasion two ewes survived the winter, but their lambs perished.

[11] See some excellent remarks on this subject by Mr. Wallace ‘Journal Proc. Linn. Soc.,’ 1858, vol. iii. p. 60.

[12] Dureau de la Malle ‘Comptes Rendus,’ tom. xli., 1855, p. 807. From the statements above given, the author concludes that the wild pigs of Louisiana are not descended from the European Sus scrofa.

[13] Capt. W. Allen, in his ‘Expedition to the Niger,’ states that fowls have run wild on the island of Annobon, and have become modified in form and voice. The account is so meagre and vague that it did not appear to me worth copying; but I now find that Dureau de la Malle (‘Comptes Rendus,’ tom. xli., 1855, p. 690) advances this as a good instance of reversion to the primitive stock, and as confirmatory of a still more vague statement in classical times by Varro.

[14] ‘Flora of Australia,’ 1859, Introduct., p. ix.