At the fountain-heads of many of these desert rivers the springs are very powerful, but the water does not continue for any great distance above the sand in their beds, but sinks and percolates through the sand until it reaches the Orange river. Knowing this, I had very little difficulty in procuring water by digging a few feet into their beds, the sand in many places filling up the original beds eight to ten feet in depth. The water when procured was clear and cool. There are several rivers on the west coast that drain Damaraland, the country being so dry that rarely any water is found in them near the coast; Swakop is the most important, the mouth being in Walfish Bay, as also the Kuisip river, south of Swakop, which enters the south side of the above bay. The rivers on the north are Omaruru, Ugab, Hubb. The northern boundary of Damaraland, the Cunene river, separates the Portuguese settlement, Benguela. And in Great Namaqualand is the Little Orange river which rises on the west slope of the mountain range, and enters the South Atlantic near Angra Peguena island, lately annexed by Germany, which completes the Orange and Vaal basin in South Central Africa. The rivers or branches of the south side of the Orange, which drain a large portion of the Cape Colony and Little Namaqualand west of the junction of the Vaal river, are the Ongar, which enters the Orange near Prieska, Hartebeest or Vish river, Pillans, and some small streams of no note. The country which these rivers pass through is wild and very hilly. CHAPTER TWENTY ONE. THE REGION NORTH OF THE TRANSVAAL UNDER LO-BENGULU, THE MATABELE KING. ITS PHYSICAL GEOGRAPHY AND NOTES ON MY EXPLANATIONS. WITHIN THE LIMPOPO BASIN.