Nile (TV series) their mission Speke separated from the main party and discovered Lake Victoria. The vast lake retains water like a vast reservoir with evaporations drained back by surrounding mountains. Speke returned with James Grant a year later and discovered the outlet at Ripon Falls. The new moon rains trigger the emergence of vast breeding swarms of flies that plagued the expedition. Speke and Grant headed downstream from the outlet but were forced to take refuge at Gondokoro. Here they met with Samuel Baker and his wife who had travelled up stream in search of the source and discovered Lake Albert in
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