[1858] Huth, loc. cit. p. 24.

[1859] McLennan, ‘Studies in Ancient History,’ pp. 75, et seq.

[1860] Spencer, ‘The Principles of Sociology,’ vol. i. pp. 614-619.

[1861] McLennan, ‘Exogamy and Endogamy,’ in ‘The Fortnightly Review,’ vol. xxi. pp. 884, et seq.

[1862] Hooper, loc. cit. p. 201.

[1863] Sproat, loc. cit. p. 94.

[1864] Seemann, ‘Voyage of Herald,’ vol. ii. p. 66.

[1865] Keene, in ‘Jour. Anthr. Inst.,’ vol. xiii. p. 206.

[1866] Powers, loc. cit. pp. 192, 271, 382. Cf. Waitz, loc. cit. vol. iii. p. 106.

[1867] Schoolcraft, loc. cit. vol. iii. p. 243. Mackenzie, ‘Voyages,’ p. xcviii.