John Hanning Speke of the way. Once Speke and Burton were back on the coast they went by ship to Zanzibar and then traveled to Aden. When back at the coast Burton had written a letter to Norton Shaw of the Royal Geographical Society (which had partially sponsored the journey) in which Burton enclosed a map of Lake Victoria made by Speke and wrote "there are grave reasons for believing it (the map) to be the source of the principal feeder of the White Nile." Once in Aden, Burton was not granted a medical certificate to travel and thus Speke left on HMS
Unyamwezi would be held at Tabora, then sent down to the coast in small groups for onward shipment. The first Europeans to reach the region were Richard Francis Burton and John Hanning Speke, who had been sponsored by the Royal Geographical Society and the British government to investigate the great Lake Uniamési said by German missionaries to lie in the region and determine if it was the source of the Nile. Burton and Speke reached Zanzibar on 20 December 1857, visited Johannes Rebmann (who had reported the lake) at his Kisuludini mission station, and paid a visit to Fuga, capital of