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
Samuel Baker Khartoum, leaving that city in December 1862 to follow up the course of the White Nile. Two months later at Gondokoro he met Speke and Grant, who, after discovering the source of the Nile, were following the river to Egypt. Their success made him fear that there was nothing left for his own expedition to accomplish; but the two explorers gave him information which enabled him, after separating from them, to achieve the discovery of Albert Nyanza (Lake Albert), of whose existence credible assurance had already been given to Speke and Grant. Baker first sighted the lake on 14 March