UGOGO AND 1RAMBA TO NG'UBU. 61 village, Kididimo, where we left the Unyanyembe road, striking in a W.N.W. direction through a dense jungle of small shrubs, now for the most part bare and leafless ; tracks of buffalo, rhinoceros, and elephant were numerous, and we saw many pitfalls dug for the latter. We encamped at night near a picturesque group of metamorphic rocks, with some pools of clear cold water close at hand. Four hours' march the following morning (October 21st) brought us to the district of Kitararu, and we pitched our tents in a picturesque grove of fan-palms (Borassus flabelliformisy near the chief's tembe. Crowds of natives came to stare at us, probably the first white man they had ever seen. We were now on the edge of the great salt-plain from which the Wagogo get the salt which forms with them an important article of trade. This plain, over which we travelled for several days, has very much the appearance of having formerly been the bed of a shallow lake, and I more than once detected on the sides of some low hills what looked like the remains of an old beach. The water on this plain is procured from deep wells, and is very brackish. At the time when we crossed it, viz., the end of October, it was as bare and drearylooking as the desert, but judging from the enormous herds of cattle which were seen on every march, and from the large tracts of land under cultivation, it must be covered with an emerald mantle of vegetation in the rainy season, though then the only green