John Hanning Speke Furious and arrived in England on 8 May 1859. Burton was not far behind and he arrived on 21 May 1859. Now further disagreements developed; Burton maintained that they had promised each other in Aden not to make public announcements till they both were back in England and Burton accused Speke of a breach of promise by publicly claiming the source of the Nile was found on their trip. Burton now turned against the theory that Lake Victoria was the source of the Nile (and now said the river flowing "out" of the north side of Lake Tanganyika was the
Misri legend School of anthropology, and would also influence proponents of polygenism. The British explorer John Hanning Speke popularized the ancient Hamitic peregrinations in his publications on his search for the source of the Nile River. Speke believed that his explorations uncovered the link between "civilized" North Africa and "primitive" central Africa. Describing the Ugandan Kingdom of Buganda, he argued that its "barbaric civilization" had arisen from a nomadic pastoralist race who had migrated from the north and was related to the Hamitic Oromo (Galla) of Ethiopia. In his "Theory of Conquest of Inferior by Superior Races" (1863), Speke would also attempt