Artes Africanæ (Google Books ⧉, Amazon ⧉, Bookshop ⧉)

In Darkest Africa; or, The Quest, Rescue, and Retreat of Emin, Governor of Equatoria

Some of the tri-bladed and four-bladed knives were shown to me, and they were recognised as characteristic of the Monbuttu and Nyam-Nyam as described by Schweinfurth in his “Artes Africanæ.”