Plodding steadily onward, they arrived on the 8th June at a spot famous for one of Livingstone’s most notable geographical discoveries, which he afterwards learned was actual confirmation of Sir Roderick Murchison’s theory, which the latter had worked out in his own arm-chair as the only one that would satisfy what was known of the African river systems, and the geological formation. Livingstone had just forded a wide river called the Lotembwa, only three feet deep, and had failed to remark in which direction it was flowing. He believed it to be the same river that flowed south from Lake Dilolo, but a Chief pointed out to him that this was not so, for the former river flowed north into the Kasai, one of the main tributaries of the Congo. The latter flowed south into the Zambesi. Livingstone now realised that he was “standing on the central ridge that divided these two systems”; and what amazed him most was that these vast river systems had their rise, not in a chain of lofty mountains, but on flat plains not more than 4,000 feet above the sea. The expedition now made slow and peaceful progress along their former route, being welcomed everywhere by their old friends with demonstrations of joy and astonishment. They distributed presents to all who had prospered them on their way, and left none but friendly memories behind them. When at the end of July they reached Libonta their progress became a triumphal procession. His men arrayed themselves in white European clothing, swaggered like soldiers, and called themselves his “braves.” During the time of service they sat with their guns over their shoulders. “You have opened a path for us,” said the people, “and we shall have sleep.” The ovations continued all down the Barotse valley. There were no drawbacks, except that many of the men found that during their absence some of their wives had sought and found other husbands. Livingstone advised them to console themselves with those that remained. “Even so, you have as many as I have,” he reminded them. At Linyanti Livingstone found his waggon and belongings perfectly safe; and some stores, and a letter a year old, from Dr. and Mrs. Moffat. Sekeletu’s gratification knew no bounds. A grand new uniform had been sent him as a present from the coast, and when he wore it to church on Sunday it produced a greater impression than the sermon. It is worth remarking that Sekeletu at once began to set on foot a trade in ivory with the Portuguese at the coast, in fulfilment of Livingstone’s policy.