[848] Wilson and Felkin, loc. cit. vol. i. p. 224.
[849] Waitz-Gerland, vol. v. pt. ii. p. 125. Wilkes, vol. v. p. 74. Romilly, ‘The Western Pacific,’ pp. 69, et seq.
[850] Dall, loc. cit. p. 420.
[851] Barth, ‘Reisen,’ vol. ii. pp. 171, et seq.
[852] Lubbock, loc. cit. p. 131. Cf. Bosman, loc. cit. pp. 419, 424 (Negroes of the Gold Coast).
[853] Marsden, loc. cit. pp. 256, et seq.
[854] v. Oettingen, loc. cit. p. 140, note.
[855] Wappäus, loc. cit. vol. ii. p. 267.
[856] Haushofer, ‘Lehr-und Handbuch der Statistik,’ pp. 404-406.
[857] Wilkens, in ‘Nationaloekonomisk Tidsskrift,’ vol. xvi. p. 90.