On these plains the springbucks were met with in vast herds; for an hour’s march with the waggons--say two and a quarter miles--I once saw them to the left of the track, along a slightly rising ground, thicker than I ever saw sheep. I suppose they must have been _trek bokken_; that is, a collection of the herds over an extended area on the move for pasturage. The Hottentot waggon-drivers shot many of them, frequently killing two at a time, they were so closely packed. They were to be counted only by tens of thousands. Formerly, they used often to invade the northern outlying farms of the Boers, and destroy their crops; and though shot in waggon-loads, they would still hang about as long as there was a green blade of anything. They were nearly as bad as the locusts, a flight of which we saw, by the way, a few days after leaving Kuruman, near the ‘Chooi,’ or large natural salt-pan. We were at breakfast, when far down on the south-east horizon I noticed a wreath as of dark smoke rising rapidly, broadening as it advanced. In a very short time it enveloped us in the form of a locust storm; the whole earth and air were full of them; tens of myriads settled, and myriads of myriads rode on clanking in mimicry of armed cavalry, and crackling like a flame devouring the stubble. Look which way you would--nothing but locusts; they did not hide the sun, but they so obscured his rays that you could look straight at him. No simile seems so apt to me as that of a heavy snow-storm with large flakes, and this uninterruptedly for two or three hours. Though the land before them was not exactly as the Garden of Eden, verily behind them it was a desolate wilderness. As the cold of night came on, they collected on the bushes in enormous masses, eight or ten feet through, for warmth, weighing them completely to the ground, and they took flight again the next morning after the sun was well up. For two days my oxen never put their heads down; there was nothing found for them to eat. The swarms pass through waste and cultivated land alike, bringing dearth and destruction, and men’s hearts fail; but the adversary has arrayed his forces against them, and through the dense flights sweep the wedge-shaped squadrons of the _springkhän vogel_, or locust birds: dark and long of wing like swifts, with white patches beneath the pinion. As squadron after squadron wheels and passes over you, the husks of the locusts fall like hail. The birds are in very large numbers and do their work deftly; before long the air above you is clear, and though the evidence of the curse is upon the earth, and remains, the locusts themselves are soon got rid of, for everything on two legs and four eats them. The Bushmen follow the flights, feed on them, dry them, and keep them in store. One night, Livingstone and I lost our way, and seeing the light of a fire, made for it. Around it sat a family of Bushmen; so, heralding our approach from a safe distance, for fear of a flight of arrows, we introduced ourselves. They welcomed us, and offered us guides and a snack of dried locusts. I ate two or three, and they were not so nasty; something like what old shrimp-shells without the insides might be. These insects are bad enough in their winged, but worse in their early wingless, form, when, as the dreaded ‘_foot-gangers_’ of the Dutch farmer, they roll in living waves over his land, defy all attempts at extermination from their multitude, climb walls, quench lines of small fires placed in the hopes of turning them, cross rivers, millions jumping in, and millions getting over on the living raft. In both the winged and wingless state they are wonderfully described in chapter ii. of Joel.