_Bambarré, 18th August, 1870._--I learn from Josut and Moenepembé, who have been to Katañga and beyond, that there is a Lake N.N.W. of the copper mines, and twelve days distant; it is called Chibungo, and is said to be large. Seven days west of Katañga flows another Lualaba, the dividing line between Rua and Lunda or Londa; it is very large, and as the Lufira flows into Chibungo, it is probable that the Lualaba West and the Lufira form the Lake. Lualaba West and Lufira rise by fountains south of Katañga, three or four days off. Luambai and Lunga fountains are only about ten miles distant from Lualaba West and Lufira fountains: a mound rises between them, the most remarkable in Africa. Were this spot in Armenia it would serve exactly the description of the garden of Eden in Genesis, with its four rivers, the Gihon, Pison, Hiddekel, and Euphrates; as it is, it possibly gave occasion to the story told to Herodotus by the Secretary of Minerva in the City of Saïs, about two hills with conical tops, Crophi and Mophi. "Midway between them," said he, "are the fountains of the Nile, fountains which it is impossible to fathom: half the water runs northward into Egypt; half to the south towards Ethiopia." Four fountains rising so near to each other would readily be supposed to have one source, and half the water flowing into the Nile and the other half to the Zambesi, required but little imagination to originate, seeing the actual visitor would not feel bound to say how the division was effected. He could only know the fact of waters rising at one spot, and separating to flow north and south. The conical tops to the mound look like invention, as also do the names. A slave, bought on Lualaba East, came from Lualaba West in about twelve days: these two Lualabas may form the loop depicted by Ptolemy, and upper and lower Tanganyika be a third arm of the Nile. Patience is all I can exercise: these irritable ulcers hedge me in now, as did my attendants in June, but all will be for the best, for it is in Providence and not in me. The watershed is between 700 and 800 miles long from west to east, or say from 22° or 23° to 34° or 35° East longitude. Parts of it are enormous sponges; in other parts innumerable rills unite into rivulets, which again form rivers--Lufira, for instance, has nine rivulets, and Lekulwé other nine. The convex surface of the rose of a garden watering-can is a tolerably apt similitude, as the rills do not spring off the face of it, and it is 700 miles across the circle; but in the numbers of rills coming out at different heights on the slope, there is a faint resemblance, and I can at present think of no other example.