[1568] Darwin, ‘The Descent of Man,’ vol. ii. p. 377.
[1569] Angas, ‘Savage Life,’ vol. i. pp. 280, 304.
[1570] Waitz, ‘Introduction to Anthropology,’ p. 305.
[1571] Sibree, loc. cit. pp. 111, 210.
[1572] Crawfurd, loc. cit. vol. i. p. 23. For additional evidence, see Bock, ‘The Head-Hunters of Borneo,’ p. 183; Zimmermann, loc. cit. vol. ii. p. 92; Georgi, loc. cit. pp. 452, 455.
[1573] Darwin, ‘The Descent of Man,’ vol. ii. p. 383.
[1574] Turner, ‘Samoa,’ p. 307.
[1575] Angas, ‘Polynesia,’ pp. 381, et seq. Cheyne, loc. cit. p. 105.
[1576] Crawfurd, vol. i. p. 23.
[1577] Marco Polo, loc. cit. vol. ii. p. 291.