Note 3 — Chapter III · PIGS—CATTLE—SHEEP—GOATS

For Europe see Bechstein, ‘Naturgesch. Deutschlands,’ 1801, B. i., s. 505. Several accounts have been published on the fertility of the offspring from wild and tame swine. See Burdach’s ‘Physiology,’ and Godron ‘De l’Espèce,’ tom. i. p. 370. For Africa, ‘Bull. de la Soc. d’Acclimat.’ tom. iv. p. 389. For India, see Nathusius, ‘Schweineschädel,’ s. 148.