Note 139 — Chapter III
Reading edition
For theories of Bantu migrations see H. H. Johnston, George Grenfell and the Congo, 1908, and "A Survey of the Ethnography of Africa," Journ. Roy. Anthr. Soc. XLIII. 1913, p. 391 ff. Also F. Stuhlmann, Handwerk und Industrie in Ostafrika, 1910, p. 138, f. 147, with map, Pl. 1. B. For the date see p. 92.