barely able to secure provisions and water sufficient to support themselves, till they could obtain assistance. He said that four or five flies were sufficient to kill a full-grown ox. The animal, however, does not die so rapidly as when bitten by a snake. Sometimes, indeed, it exists for some weeks or months afterwards, gradually losing its strength, and perishing ultimately of exhaustion. Frequently, however, oxen die, especially should rain fall, soon after they are bitten. In the case of one of his horses which had been bitten, the head and body swelled, its eyes became so swollen that it could not see, and it was painful to hear it neighing for its companions, who stood close to it while feeding. A remarkable feature with regard to the poison of the tsetse is that calves, and other young sucking animals, are safe so long as they suck; but it has been remarked that dogs though reared on milk die if bitten, while a dog which was reared on the meat of game accompanied his master when hunting in the districts infested by the fly without suffering. We had now entered a far more desolate-looking country than any we had yet passed through. Vast sandy plains extended round us, broken here and there by clumps of low bushes or coarse long grass, with occasional patches of more nutritious verdure, from which our oxen plucked their scanty meals. Still, occasionally, herds of deer passed us in the distance, but they were so wary that we could not approach them. The open nature of the country made stalking in the ordinary way impossible. Every night, however, Donald, accompanied by Timbo, spent two or three hours, and sometimes longer, in lying in ambush, hoping to get a shot at a passing animal, but their success had hitherto not been sufficient to supply us with as much meat as we required. Water too was very scarce. We had been travelling slowly all day, when our cattle began to move on with greater rapidity than before, evidently believing that water was near. Donald was riding ahead, looking about him, when suddenly he and his horse disappeared. I was at no great distance behind him, and before I could pull up I was very nearly following. I found that he had slid down into a large sand-well, some twenty feet in diameter at the top, and upwards of twelve feet in depth. As soon as he was extricated from the pit, the men were called with spades to clear it out. However, after digging some time, no water flowed into it, though the bottom became thoroughly moist. We fortunately had some long reeds with us. These were sunk into the sand, and immediately water began to rise. We quickly got enough to quench the thirst of the people, but we had to wait some time before a supply could be procured for the cattle. As soon as water had been given to the horses, Timbo set out in search of game. We were as unfortunate as we had usually been of late. Perhaps this might have arisen from our want of skill. Donald was an inferior