John Hanning Speke arrange a better relationship for Mere with another man, without success it seems. Finally, given permission by Mutesa in June 1862 to leave, Speke then travelled down the Nile now reunited with Grant. Because of travel restrictions placed by the local chieftains, slave raiding parties, tribal wars and the difficulty of the terrain, Speke was not able to map the entire flow of the Nile from Lake Victoria north. Why he did not make more efforts to do so is not clear, but the enormous hardships of the journey must have played a large role. By January 1863 Speke and
John Hanning Speke an appendix in his own book on his travels to Harrar. It seemed unlikely that the two would join again and Burton believed that he would not lead an expedition to the interior of Africa, his fervent hope, after this failed journey. In 1856, Speke and Burton went to East Africa to find the Great Lakes, which were rumored to exist in the center of the continent. It was hoped that the expedition would locate the source of the Nile. The journey, which started from Zanzibar Island in June 1857, was extremely strenuous and both men fell ill from a