[53] ‘The Great Sahara,’ by the Rev. H. B. Tristram, 1860, p. 238.
[54] Pallas, ‘Act. Acad. St. Petersburg,’ 1777, p. 249; Moorcroft and Trebeck, ‘Travels in the Himalayan Provinces,’ 1841.
[55] Quoted from Raffles, in the ‘Indian Field,’ 1859, p. 196: for Varro, see Pallas ut supra.
[56] Erman’s ‘Travels in Siberia,’ Eng. translat., vol. i. p. 453.
[57] See also ‘Journal of R. Geograph. Soc.,’ vol. xiii. part i. p. 65.
[58] Livingstone’s ‘First Travels,’ pp. 191, 439, 565; see also ‘Expedition to the Zambesi,’ 1865, p. 495, for an analogous case respecting a good breed of goats.
[59] Andersson’s ‘Travels in South Africa,’ pp. 232, 318, 319.
[60] Dr. Vavasseur, in ‘Bull. de La Soc. d’Acclimat.,’ tom. viii. 1861, p. 136.
[61] ‘The Natural History of Dee Side,’ 1855, p. 476.
[62] ‘Bull. de la Soc. d’Acclimat.,’ tom. vii. 1860, p. 457.