[928] Shooter, ‘The Kafirs of Natal,’ p. 52.
[929] Wilkes, loc. cit. vol. iv. p. 457.
[930] Darwin, ‘The Descent of Man,’ vol. i. pp. 459, 501.
[931] Haeckel, ‘Generelle Morphologie,’ vol. ii. p. 244.
[932] Hearne, loc. cit. pp. 104, et seq.
[933] Richardson, loc. cit. v. ii. pp. 24, et seq. Cf. Mackenzie, loc. cit. p. 145; Ross, in ‘Smith. Rep.,’ 1866, p. 310.
[934] Hooper, loc. cit. p. 303. Cf. Nansen, loc. cit. vol. ii. p. 319 (Greenlanders).
[935] Schoolcraft, loc. cit. vol. iv. p. 224. Powers, loc. cit. pp. 221, et seq.
[936] Waitz, loc. cit. vol. iv. p. 132.
[937] Azara, loc. cit. vol. ii. p. 94.