Henry Morton Stanley the source of the Nile. Between 1875 and 1876 Stanley succeeded in the first part of his objective, establishing that Lake Victoria had only a single outlet – the one located by John Hanning Speke on 21 July 1862. If this was not the Nile's source, then the massive northward flowing river called by Livingstone, the Lualaba, and mapped by him in its upper reaches, might flow on north to connect with the Nile via Lake Albert and thus be the primary source. It was therefore essential that Stanley should trace the course of the Lualaba downstream (northward) from Nyangwe,
John Hanning Speke he found hard and time consuming as he was not naturally a gifted writer. He failed to give a good and full report to the RGS for many months and thus in effect was not defending his positions of discovery. In addition Speke had a public dispute with the Pethericks who had by and large acted according to their RGS instructions but Speke had felt they had not. All this led Roderick Murchison, president of the Royal Geographical Society, to start disliking Speke and a third expedition, led by Speke, was becoming less likely as it would have to be