The interesting discovery of a spear-thrower in central Africa was made in 1937 by Mr J. S. Owen, then Assistant District Commissioner El Fasher, who heard of one being used in the Daju hills of Southern Darfur, and obtained two examples from Harun Yasīn the man who introduced the spear-thrower to that area. It had not come into general use among the Darfur Daju; and there was uncertainty as to its origin, when I was asked to find out from where it came.