John Hanning Speke and Speke, and Baker played into this so he could assume a greater role as an explorer and co-discoverer of the Nile. Speke, via Baker's ship, then continued to Khartoum from which he sent a celebrated telegram to London: "The Nile is settled." Speke's expedition did not resolve the issue, however. Burton claimed that because Speke had not followed the Nile from the place it flowed out of Lake Victoria to Gondokoro, he could not be sure they were the same river. Baker and Florence, meanwhile, stayed in Gondokoro and tried to settle the flow of the river from there
Hamites races were too broad to have stemmed from a single common ancestor, but were instead consistent with separate racial origins. In his "Crania Aegyptiaca" (1844), Morton analyzed over a hundred intact crania gathered from the Nile Valley, and concluded that the ancient Egyptians were racially akin to Europeans. His conclusions would establish the foundation for the American School of anthropology, and would also influence proponents of polygenism. In the second half of the 19th century, the British explorer John Hanning Speke would further popularize the ancient Hamitic peregrinations in his publications on his search for the source of the Nile