From this it will appear evident that the only portion of Lake Tanganika remaining unvisited was that part of the west-end shore, between Kasengé Island and the northernmost point of what Burton and Speke called Ubwari Island, and what Livingstone and I called Muzimu Island. Doubtless there were many portions of Livingstone’s route overland which rendered the coast line somewhat obscure, and in his hurried journey to Ujiji in 1869, by canoe from Mompara’s to Kasengé, a portion of the Uguha coast was left unexplored. But it is Livingstone who was the first to map out and give a tolerably correct configuration to that part of Lake Tanganika extending from Urimba round to the south end and up along the eastern shore to Kasengé Island, as it was Burton and Speke who were the first to map out that portion of the Tanganika extending from Ujiji to a point nearly opposite Ubwari and the north-west, from Ubwari’s north end as far as Uvira. In February 1874 Lieutenant Verney Lovett Cameron, R.N., arrived at the same village of Ujiji, which had been seen by Burton and Speke in 1858, and which was known as the place where I discovered Livingstone in 1872. He had traversed a route rendered familiar to thousands of the readers of the ‘Lake Regions of Central Africa,’ ‘the Journal of the Discovery of the Nile,’ and ‘How I found Livingstone,’ through a country carefully mapped, surveyed and described. But the land that lay before him westerly had only been begun by Livingstone, and there were great and important fields of exploration beyond the farthest point he had reached. Lieutenant Cameron procured two canoes, turned south, and coasted along the eastern shore of the Tanganika, and when near the southern end of the Lake, crossed it, turned up north along the western shore, and discovered a narrow channel, between two spits of pure white sand. Entering this channel, the Lukuga creek, he traced it until farther progress was stopped by an immovable and impenetrable barrier of papyrus. This channel, Lieutenant Cameron wrote, was the outlet of Lake Tanganika. Satisfied with his discovery, he withdrew from the channel, pursued his course along the west coast as far as Kasengé Island, the camping-place of both Speke and Livingstone, and returned direct to Ujiji without making further effort. Lake Tanganika, as will be seen, upon Lieutenant Cameron’s departure, had its entire coast-line described, except the extreme south end, the mouth of the Lufuvu and that portion of coast lying between Kasengé Island and the northern point of Ubwari, about 140 miles in extent. LIVINGSTONE’S GREAT RIVER. What we knew distinctly of this great river began with Livingstone’s last journey, when he wrote from Ujiji in 1869, repeating what he had already written in 1867, at the town of Cazembe, in a despatch to Lord Clarendon.