p. 271.

[436] 'Poultry Chronicle' (1854), vol. ii. p.91, and vol. i. p. 330.

[437] Dr. Turral, in 'Bull. Soc. d'Acclimat.,' tom. vii., 1860, p. 541.

[438] Willughby's 'Ornithology,' by Ray, p. 381. This breed is also figured
by Albin, in 1734, in his 'Nat. Hist. of Birds,' vol. ii. p. 86.

[439] F. Cuvier, in 'Annales du Museum,' tom. ix. p. 128, says that
moulting and incubation alone stop these ducks laying. Mr. B. P. Brent
makes a similar remark in the 'Poultry Chronicle,' 1855, vol. iii. p. 512.

[440] Rev. E. S. Dixon, 'Ornamental and Domestic Poultry' (1848), p. 117.
Mr. B. P. Brent, in 'Poultry Chronicle,' vol. iii., 1855, p. 512.

[441] Crawfurd on the 'Relation of Domesticated Animals to Civilisation,'
read before the Brit. Assoc. at Oxford, 1860.

[442] Dureau de la Malle, in 'Annales des Sciences Nat.,' tom. xvii. p.
164; and tom. xxi. p. 55. Rev. E. S. Dixon, 'Ornamental Poultry,' p. 118.
Tame ducks were not known in Aristotle's time, as remarked by Volz, in his
'Beitraege zur Kulturgeschichte,' 1852, s. 78.

[443] I quote this account from 'Die Enten, Schwanen-zucht,' Ulm, 1828, s.
143. _See_ Audubon's 'Ornithological Biography,' vol. iii. p. 168, on the
taming of ducks on the Mississippi. For the same fact in England, _see_ Mr.
Waterton, in Loudon's 'Mag. of Nat. Hist.,' vol. viii., 1835, p. 542; and
Mr. St. John, 'Wild Sports and Nat. Hist. of the Highlands,' 1846, p. 129.

[444] Mr. E. Hewitt, in 'Journal of Horticulture,' 1862, p. 773; and 1863,
p. 39.

[445] I have met with several statements on the fertility of the several
breeds when crossed. Mr. Yarrell assured me that Call and common ducks are
perfectly fertile together. I crossed Hook-billed and common ducks, and a
Penguin and Labrador, and the crossed ducks were quite fertile, though they
were not bred _inter se_, so that the experiment was not fully tried. Some
half-bred Penguins and Labradors were again crossed with Penguins, and
subsequently bred by me _inter se_, and they were extremely fertile.

[446] 'Poultry Chronicle,' 1855, vol. iii. p. 512.

[447] 'Journal of the Indian Archipelago,' vol. v. p. 334.

[448] 'The Zoologist,' vols. vii., viii. (1849-1850), p. 2353.

[449] 'Poultry Chronicle,' 1855, vol. iii. p. 512.

[450] 'Poultry Chronicle,' vol. iii., 1855, p. 312. With respect to Rouens,
_see_ ditto, vol. i., 1854, p. 167.

[451] Col. Hawker's 'Instructions to young Sportsmen,' quoted by Mr. Dixon
in his 'Ornamental