The entire length of this river, from the fountain-head to its mouth in the Indian Ocean, south of Mozambique, is 1550 miles. The small lake Dilolo, in 11 degrees 30 minutes South latitude, 23 degrees 0 minutes East longitude, situated in the Lololala region, and within a few miles of the upper springs of the Kuana, a branch of the Congo; and from thence falls south and south-east, through Lui Banda, Barotsi, Makololo, Banyeti, and other tribes, with its many branches, to the Victoria Falls, and then on to the sea in an easterly direction. The other important tributaries, taking their rise in the region west of the above, are the Chobe, Quito, Cubango or Okavango, and many branches in the country of the Kimbandi and Bunda; the source of the Cubango or Okavango is but a short distance from the upper springs of the river Quanza, that passes through Angola to the South Atlantic, and belongs to the Portuguese. The Chobe takes a winding course south, through a level and swampy country, full of jungle, past a Kaffir kraal, Matambaya, to within seventy miles to the west of Linyanti; past that chief's kraal, in an easterly and north-easterly direction, it enters the Zambese thirty-seven miles above the Victoria Falls. The Chobe is a large and broad river with several rapids. There are many streams and laagte which intersect this extensive and swampy region. It is a most unhealthy and sickly country, whence it has obtained the name of the Fever District. The Cubango river: the source of this river also flows south 19 degrees 10 minutes South latitude, 15 degrees 0 minutes East longitude, the altitude was 3370 feet above sea-level; from that station the river runs in a south-east direction for fifty-five miles to Libebe kraal, then in an easterly course winding through the desert for sixty-five miles to Debabe's kraal, 17 degrees 22 minutes South latitude, 21 degrees 30 minutes East longitude. Thirty miles below my station the river Quito joins, which forms a broad and fine stream. At Debabe's the river turns south-south-east, and receives a new name, the Tonga; one portion flowing into the Chobe; the other continuing, with many turns and windings, for 220 miles, finally entering the north-west corner of Lake N'gami at an altitude of 2813 feet, receiving in its course the Laagte Okayanka that rises in Ovarapoland at Chambomba vlei, 3900 feet above sea-level, flowing east, and enters the Tonga 110 miles below Debabe town, where the country is full of swamps, with outlets into the Mababe river. Lake N'gami is forty-five miles long when full, and about ten miles in width, very shallow, and is getting less every year. The western end is in 20 degrees 25 minutes South latitude, 22 degrees 38 minutes East longitude. There are several small streams which flow into it in the rainy season. On the eastern side the Zouga river joins it, sometimes flowing into it, and sometimes out; the direction of the current depending on the rainfall.