The Malagarazi, corrupted by speculative geographers to Mdjigidgi,--the uneuphonious terminology of the “Mombas Mission Map,”--to “Magrassie” and to “Magozi,” has been wrongly represented to issue from the Sea of Ujiji. According to all travellers in these regions, it arises in the mountains of Urundi, at no great distance from the Kitangure, or River of Karagwah; but whilst the latter, springing from the upper counterslope, feeds the Nyanza or Northern Lake, the Malagarazi, rising in the lower slope of the equatorial range, trends to the south-east, till it becomes entangled in the decline of the Great Central African Depression--the hydrographical basin first indicated in his Address of 1852 by Sir Roderick I. Murchison, President of the Royal Geographical Society of London.[10] Thence it sweeps round the southern base of Urundi, and, deflected westwards, it disembogues itself into the Tanganyika. Its mouth is in the land of Ukaranga, and the long promontory behind which it discharges its waters, is distinctly visible from Kawele, the head-quarters of caravans in Ujiji. The Malagarazi is not navigable; as in primary and transition countries generally, the bed is broken by rapids. Beyond the ferry, the slope becomes more pronounced, branch and channel-islets of sand and verdure divide the stream, and as every village near the banks appears to possess one or more canoes, it is probably unfordable. The main obstacle to crossing it on foot, over the broken and shallower parts near the rock-bars, would be the number and the daring of the crocodiles. [10] The following notice concerning a discovery which must ever be remembered as a triumph of geological hypothesis, was kindly forwarded to me by the discoverer:-- “My speculations as to the whole African interior being a vast watery plateau-land of some elevation above the sea, but subtended on the east and west by much higher grounds, were based on the following data:--