All night long we rode slowly and steadily through the dunes which were here favorable to our course; for their long parallel lines ran like the waves of the sea, almost due east and west, as far as the eye could reach, and we were able to ride in the "aars" or narrow valleys between them and make good progress.

So far vegetation of a sort was still abundant, tufted "toa" grass, sorrel, and other succulent plants offered juicy fodder for the horses, and I began to think that this much-dreaded desert was a desert but in name, and that our task was to be a light one. With dawn we off- saddled. From the summit of a high dune I looked round in all directions, and as far as the eye could reach could see nothing but the endless monotony of wave after wave of dunes, treeless, and apparently almost devoid of vegetation, for the little there was, was confined to the deep hollows between. A short distance away a fair-sized bush offered a modicum of shade, and here we rested for the day for we had planned to travel only in the cool of the night as long as the moon served. And here Inyati showed me how to make water from the young green t'samma, taking those the size of an orange only, and roasting them in the ashes, and thus turning their pulp into a clear liquid like water. Seldom though did we trouble to do this, eating the insipid cucumber-like fruit as we found it, but though refreshing and capable of supporting life, the longing for water is always present in the desert.

And thus, trekking by night, and resting by day as much as the terrific heat would allow, we worked our tedious way into the heart of the desert; and now the magnitude of the task before me was becoming more fully apparent every day. For, toil as our willing beasts would, it was obvious that each long night's exhausting trek barely carried us ten miles forward as the crow flies. The dunes were each day becoming higher, till they were veritable mountains of sand, the patches of t'samma became less and less frequent, and it was evident that at any time they might fail altogether. All this time we saw no sign of human life, not even a solitary spoor upon the tell-tale sand. Animal life, however, there was in abundance, and we had no need to leave our path to shoot as much game as we required.

At times, on cresting the brow of a dune, we would come close upon a herd of gemsbok in the long "aar" beneath us; magnificent animals, whose long, straight, saber-like horns are feared even by the lion. Fearless of man, the whole troop would stand as one, gazing straight at us, immovable as statues, until we were within a few yards of them; then their leader, usually a magnificent bull, with horns of well on to four feet, would give a toss of his head and a stamp of his foot, and away the whole troop would fly; wheeling, trotting, halting and turning to gaze at us again, in such perfect unison, that they reminded one irresistibly of a well-drilled troop of cavalry.

Or a flock of ostriches would career across our path, their huge strides covering the ground at an incredible pace; queer-looking hartebeest were also plentiful, and duiker, steenbok, and smaller fry abounded everywhere.

Of lions we saw but little, though their spoors were abundant, and occasionally we heard them at night; the spoors of leopards were everywhere but these wily animals are seldom seen unless hunted for and often a pack of the dreaded wild hunting-dogs would stream across our path in pursuit of its quarry.

For strangely enough all of these animals appear to be absolutely independent of water, and some of them notably the gemsbok, apparently never drink.

There came a day when we entered an entirely different region, though still the sand stretched in all directions. But now the dunes were no longer either uniform in height or parallel as they had been, but tossed and tumbled in all directions in the utmost confusion; and here also t'samma, and in fact all vegetation, ceased. We reached this region of awful desolation a little after sunrise one morning, coming upon it abruptly from the edge of a dune whose hollow held the usual vegetation in plenty.

With my field-glasses I scanned the bare and barren waste before us in all directions, but no sign of life or vegetation broke the monotony of its awful desolation. I looked at Inyati, peering from under his palm in the same direction, and he answered my unspoken question.

"Yes, master, we must cross it. It runs for many days' journey north and south, and we cannot go round. I crossed it when I came, but farther south; and I found a little t'samma then. And yet I nearly died!"