Note 74 — I. ETHNOLOGY. By George Rolleston, M.D., F.R.S. Linacre Professor of Anatomy and Physiology in the University of Oxford.
Reading edition
For this see Hartmann, Die Nigritier, 1876, p. 492, who cites Schweinfurth, Heart of Africa, Eng. tran., vol. ii. chap. xvi., Du Chaillu, and the Rev. J. G. Wood, Natural History of Man. Africa, p. 538, 1868.