[1918] Mr. Eyles, in a letter.

[1919] Hildebrandt, ‘Ethnographische Notizen über Wakamba und ihre Nachbaren,’ in ‘Zeitschr. f. Ethnol.,’ vol. x. p.  401.

[1920] Krasheninnikoff, loc. cit. p. 212.

[1921] Bastian, ‘Rechtsverhältnisse,’ p. 172.

[1922] Riedel, loc. cit. pp. 302, 335, 351.

[1923] Dalton, loc. cit. p. 81.

[1924] Kovalevsky, ‘Marriage among the Early Slavs,’ in ‘Folk-Lore,’ vol. i. p.  475.

[1925] Burton, ‘First Footsteps,’ p. 119.

[1926] Morgan, ‘Houses and House-Life of the American Aborigines,’ p. 73.

[1927] Ibid., p. 64.