1859, p. 299.

[61] 'Philosoph. Magazine,' vol. iv., 1799, p. 5.

[62] This last case is quoted by Mr. Sedgwick in 'British and Foreign
Medico-Chirurg. Review,' April, 1861, p. 484. For Blumenbach, _see_
above-cited paper. _See_, also, Dr. P. Lucas, 'Traite de l'Hered. Nat.,'
tom. ii. p. 492. Also 'Transact. Lin. Soc.,' vol. ix. p. 323. Some curious
cases are given by Mr. Baker in 'The Veterinary,' vol. xiii. p. 723.
Another curious case is given in the 'Annales des Scienc. Nat.,' 1st
series, tom. xi. p. 324.

[63] 'Proc. Royal Soc.,' vol. x. p. 297.

[64] Mr. Sproule, in 'British Medical Journal,' April 18, 1863.

[65] Downing, 'Fruits of America,' p. 5; Sageret, 'Pom. Phys.,' pp. 43, 72.

[66] Youatt on Sheep, pp. 20, 234. The same fact of loose horns
occasionally appearing in hornless breeds has been observed in Germany:
Bechstein, 'Naturgesch. Deutschlands,' b. i. s. 362.

[67] Youatt on Cattle, pp. 155, 174.

[68] Youatt on Sheep, 1838, pp. 17, 145.

[69] I have been informed of this fact through the Rev. W. D. Fox, on the
excellent authority of Mr. Wilmot: _see_, also, remarks on this subject in
an original article in the 'Quarterly Review,' 1849, p. 395.

[70] Youatt, pp. 19, 234.

[71] 'The Poultry Book,' by Mr. Tegetmeier, 1866, p. 231.

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

[73] 'Gardener's Chron.,' 1855, p. 777.

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

[75] _See_ some excellent remarks on this subject by Mr. Wallace, 'Journal
Proc. Linn. Soc.,' 1858, vol. iii. p. 60.

[76] Dureau de la Malle, in '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_.

[77] 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.

[78] 'Flora of Australia,' 1859, Introduct., p. ix.

[79] 'De l'Espece,' tom. ii. pp. 54, 58, 60.

[80] Mr. Sedgwick gives many instances in the 'Brit