Entering Webb's River from the south-south-west, a little north of Kamolondo, is a large river called Lufira, but the streams, that discharge themselves from the watershed into the Lualaba are so numerous that the Doctor's map would not contain them, so he has left all out except the most important. Continuing his way north, tracing the Lualaba through its manifold and crooked curves as far as latitude 4 degrees south, he came to where he heard of another lake, to the north, into which it ran. But here you may come to a dead halt, and read what lies beyond this spot thus.... This was the furthermost point, whence he was compelled to return on the weary road to Ujiji, a distance of 700 miles. In this brief sketch of Dr. Livingstone's wonderful travels it is to be hoped the most superficial reader, as well as the student of geography, comprehends this grand system of lakes connected together by Webb's River. To assist him, let him glance at the map accompanying this book. He will then have a fair idea of what Dr. Livingstone has been doing during these long years, and what additions he has made to the study of African geography. That this river, distinguished under several titles, flowing from one lake into another in a northerly direction, with all its great crooked bends and sinuosities, is the Nile--the true Nile--the Doctor has not the least doubt. For a long time he entertained great scepticism, because of its deep bends and curves west, and south-west even; but having traced it from its head waters, the Chambezi, through 7 degrees of latitude--that is, from 11 degrees S. to lat. 4 degrees N.--he has been compelled to come to the conclusion that it can be no other river than the Nile. He had thought it was the Congo; but has discovered the sources of the Congo to be the Kassai and the Kwango, two rivers which rise on the western side of the Nile watershed, in about the latitude of Bangweolo; and he was told of another river called the Lubilash, which rose from the north, and ran west. But the Lualaba, the Doctor thinks, cannot be the Congo, from its great size and body, and from its steady and continued flow northward through a broad and extensive valley, bounded by enormous mountains westerly and easterly. The altitude of the most northerly point to which the Doctor traced the wonderful river was a little in excess of 2,000 feet; so that, though Baker makes out his lake to be 2,700 feet above the sea, yet the Bahr Ghazal, through which Petherick's branch of the White Nile issues into the Nile, is but 2,000 feet; in which case there is a possibility that the Lualaba may be none other than Petherick's branch.