Gamoep, where the last water was to be found, lay on the actual edge of the level desert some distance to the south-east of Silverfontein. To reach it involved a long day's trek, for the route was through soft sand. At Gamoep was a permanent spring,--the water of which, although fit for animals, was not quite suitable for human consumption. Alongside the pool which the spring feeds we decided to rest for twenty-four hours, for the oxen had a heavy strain to undergo and we felt it necessary to cover as much as possible of the first part of our journey during the cool hours of night. We slept soundly after our long tramp. Next morning, as the sun began to soar, sand-grouse in flocks of almost incredible numbers came sweeping in from the desert. The wearied birds alighted a few hundred yards from the pool, and there rested for about ten minutes. Then they arose, swooped down to the edge of the pool for a hurried sip, and sped back whence they came. We shot sufficient of these for our immediate needs. Late in the afternoon, when the sting had gone out of the sunshine, we drove the oxen to the pool and let them drink their fill. We had brought two horses--my old hunting-horse, "Prince," and another "Swaitland," renamed "Bucephalus," for Hendrick, my after-rider. But the horses had to remain for the present at Gamoep, in charge of Danster, one of our Hottentots. Piet Noona, another Hottentot, and his nephew,--a lad of about twelve years of age, were also left behind for the purpose of taking charge of the oxen when they returned, maddened with thirst, after being released from the yoke at the camping-place under Bantom Berg and the Great Dune, which was our objective. Shortly before sundown we inspanned and made a start, shaping our course north-east. Soon we had crossed the last rocky ridge,--the boundary separating the hilly country from the plains. The latter were covered with the shock-bearing tussocks of "toa,"--waving plumes at that time bleached to a light-yellow by the ardours of the summer sun. We passed the head of the Kanxas Gorge,--a miniature canyon whose rocky, perpendicular sides contained caves which had been until a comparatively recent date occupied by Bushmen. The walls of these caves shew records of their former inhabitants in the form of black-pigmented script. This consists mainly of groups of short, parallel lines crossed at various angles by lines similar. But neither here nor in any of the haunts of the now-vanished Bushmen I have visited in the north-western areas of the Cape Province, have I seen paintings of men and animals such as are to be found in other parts of South Africa. A spring had existed at Kanxas within the memory of living Trek-Boers. Of this no vestige then remained. Herein lies an additional item of evidence pointing to the ominous conclusion that South Africa is slowly but surely drying up.