[501] W. Junker, Reisen in Afrika, Vienna and Olmütz, 1889–91; and Ergänzungsh. Peter. Mit., Nos. 92 and 93, Gotha, 1888–89.
[502] Schweinfurth, “Die Monbuttu,” Zeits. f. Ethn., 1873, p. 1, and Artes Africanæ, Leipzig, 1875; Junker, loc. cit.; P. Comte, Les N’Sakkaras, Bar-le-Duc, 1895.
[503] See Schweinfurth, loc. cit. (Artes Africanæ), and The Heart of Africa, 2nd ed., London, 1878; Junker, loc. cit.
[504] Crampel, Le Tour du Monde, 1890, 2nd half-year, p. 1; Dybowski, La Route du Tchad, Paris, 1893; Maistre, De l’Oubanghi à la Bénoué, Paris, 1895.
[505] Béranger-Féraud, Peuples de la Senagambie, chap, iii., Paris, 1879; and the works of Faidherbe, Binger, Tautin, P. C. Meyer, quoted later.
[506] Stature, 1 m. 75; ceph. ind., 74.3; nas. ind., 95.3 (Collignon and Deniker on 32 subjects).
[507] It follows from what has been said previously that in many places the northern portion of the Negro territory is invaded by the Ethiopians, the Fulah-Zandeh, and the Arabo-Berbers.
[508] Nachtigal, Sahara et Soudan, vol. i. (trans. into French), p. 245, Paris, 1881.
[509] Nachtigal, Sahara und Sudan, Berlin-Leipzig, 1879–89, 3 vols.
[510] Schweinfurth, loc. cit., vol. i., chaps. vii. and lciv.; Stuhlmann, loc. cit., chap. xxii.; Frobenius, Die Heiden-Neger, Berlin, 1893; E. de Martonne, Annales de Géogr., Paris, 1896, p. 506, and 1897, p. 57.