[797] Pallas, quoted by Youatt on Sheep, p. 25.
[798] Youatt on Cattle, 1834, p. 174.
[799] 'Encyclop. Méthod.,' 1820, p. 483: see p. 500, on the Indian zebu casting its horns. Similar cases in European cattle were given in the third chapter.
[800] Pallas, 'Travels,' Eng. translat., vol. i. p. 243.
[801] Mr. Beaton, in 'Journal of Horticulture,' May 21, 1861, p. 133.
[802] Lecoq, 'De la Fécondation,' 1862, p. 233.
[803] 'Annales du Muséum,' tom. vi. p. 319.
[804] 'Hist. des Anomalies,' tom. iii. p. 392. Prof. Huxley applies the same principle in accounting for the remarkable, though normal, differences in the arrangement of the nervous system in the Mollusca, in his great paper on the Morphology of the Cephalous Mollusca, in 'Phil. Transact.,' 1853, p. 56.
[805] 'Eléments de Tératologie Veg.,' 1841, p. 113.
[806] Prof. J. B. Simonds, on the Age of the Ox, Sheep, &c., quoted in 'Gard. Chronicle,' 1854, p. 588.