[57] Bechstein, 'Naturgesch. Deutschlands,' b. iv. s. 462. Mr. Brent, a great breeder of canaries, informs me that he believes that these statements are correct.
[58] 'The Poultry Book,' by W. B. Tegetmeier, 1866, p. 245.
[59] 'British and Foreign Med.-Chirurg. Review,' July, 1861, pp. 200-204. Mr. Sedgwick has given such full details on this subject, with ample references, that I need refer to no other authorities.
[60] 'De l'Espèce,' tom. ii., 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, 'Traité de l'Héréd. 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.