The next day I passed through a pretty country, well-wooded and low hills, noted as the lion veldt; therefore I treked on to get clear of the bush before night, and came to a very large brak pan, at least four miles in circumference, called Great Chue Pan. On the bank was a small spring of good water, and an open country, where we remained the night. The oxen were let loose, and the horse knee-haltered to feed, before making them fast for the night to the trektow, my invariable custom, to prevent their straying; the loss of your oxen is almost death to the traveller. They were feeding some distance from my camp, when they were seen in full gallop coming to the waggon, and did not stop until close home; we knew they were frightened by lions. At night, soon after dark, we heard the roar of several, in the direction where the oxen had been feeding. We made them fast round the waggon, and close in front collected wood for fires, which we kept up all night; and all of us on the watch with rifles, for they never ceased their roar, sometimes very near, but being very dark and cloudy I could not see them. As a book of reference, describing the physical geography of South Central Africa, it is necessary in the first instance to give the several river systems or basins comprised within this region; and, secondly, to give the results of my explorations, not in consecutive journeys, but in a detailed description of each separate region visited from time to time, as I had frequent occasion to travel over the same ground for the purpose of completing my labours, so that no portion of any region should be left unexplored. For when such an immense area of nearly 2,000,000 square miles has to be visited, to survey the whole necessitates frequent visits to the same district, to be able to reach those parts beyond. Consequently I have passed through all this region many times. CHAPTER FIVE. ON GRIQUALAND WEST, THE GRIQUAS, KORANNAS, BUSHMEN, AND DIAMOND-FIELDS.