3655624 Ornaments, etc., of the Negroes on the Nile (engraving) by European School, (19th century); Private Collection; (add.info.: Ornaments, etc., of the Negroes on the Nile. Necklaces and head-dresses, Latuka, Lango, and Shuli. Madi signalling whistle. Latuka signalling horn. Bari women\'s aprons. Vienna Ethnographical Museum. Illustration for The History of Mankind by Friedrich Ratzel (Macmillan, 1896).); by Look and Learn.