“From the southern extremity of the Tanganyika he crossed Marungu and came in sight of Lake Moero. Tracing this lake, which is about sixty miles in length, to its southern head, he found a river called the Luapula entering it from that direction. Following the Luapula south he found it issue from the large lake of Bangweolo, which is as large in superficial area as the Tanganyika. In exploring for the waters which emptied into the lake he found by far the most important of these feeders was the Chambezi. So that he had thus traced the Chambezi from its source to Lake Bangweolo, and issue from its northern head under the name of Luapula, and found it enter Lake Moero. Again he returned to Cazembe, well satisfied that the river running north through three degrees of latitude could not be the river running south under the name of the Zambezi, though there might be a remarkable resemblance in their names. “At Cazembe he found an old white-bearded half-caste named Mohammed ben Salih, who was kept as a kind of prisoner at large by the King because of certain suspicious circumstance attending his advent and stay in his country. Through Livingstone’s influence Mohammed ben Salih obtained his release. On the road to Ujiji he had bitter cause to regret having exerted himself in the half-caste’s behalf. He turned out to be a most ungrateful wretch, who poisoned the minds of the Doctor’s few followers and ingratiated himself in their favor by selling the favors of his concubines to them, thus reducing them to a kind of bondage under him. From the day he had the vile old man in his company manifold and bitter misfortunes followed the Doctor up to his arrival in Ujiji, in March, 1869.