[73] ‘The Horse,’ p. 22.
[74] ‘History of England,’ vol. i. p. 316.
[75] ‘Ueber Beständigkeit der Arten.’
[76] Youatt on Sheep, p. 315.
[77] ‘Ueber Shorthorn Rindvieh,’ 1857, s. 51.
[78] Low, ‘Domesticated Animals,’ 1845, p. 363.
[79] ‘Quarterly Review,’ 1849, p. 392.
[80] H. von Nathusius, ‘Vorstudien . . . Schweineschädel,’ 1864, s 140.
[81] See also Dr. Christ, in Rütimeyer’s ‘Pfahlbauten,’ 1861, s. 226.
[82] The passage is given, ‘Bull. Soc. d’Acclimat.,’ 1858, p. 11.