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 it was vast and they only could get small canoes from the locals. Burton was too ill to journey and thus Speke crossed the lake with a small crew and some canoes to try to rent a larger vessel from an Arab who, they were told, had a large boat and lived on the west side of the lake. (Lake Tanganyika is over 400 miles long on the north-south axis but only about 30 miles wide.) During this trip Speke, marooned on an island, suffered severely when he became temporarily deaf after a beetle crawled into his ear and he