Now there was still a mystery Swartboy had not explained; and that was, how this animal, when it found the eggs, was able to get at their contents? The shell of the ostrich-egg is thick and strong. It requires a considerable blow with some hard weapon to break it, and how a puny creature, like the little fennec, could effect a breach was a mystery to all, but especially to the naturalist Hans. The fennec was no stranger to him. He had seen many of them in captivity. He knew something of their anatomy. He knew that their skulls were destitute of the ridge in which the temporal muscles are inserted, and that consequently they were weak-jawed animals—much more so than the common fox. It was not possible for them to have broken the shell of an ostrich-egg with their jaws. He knew that it was equally impossible for them to effect that purpose with the claws of their feet—the soles of which are covered with soft wool, as in the Arctic fox—a peculiarity considering that the fennec is an inhabitant of the hottest climes, and one quite unexplained by naturalists!

From the strength and structure of the animal, Hans believed it could no more have got at the contents of an ostrich-egg than it could have eaten its way into the heart of a bomb-shell.

Swartboy was here at fault. He only knew that it did get at the contents, white and yolk; but how he had never observed. He could not tell. He could not solve the mystery.

They had not long to wait in doubt about this matter. In less than ten minutes after, the fennec himself presented the solution before the astonished eyes of the young yägers.

When they had ridden up within some three hundred yards of the nest the little animal came under the view of all, and they pulled up to watch his manoeuvres. He was so busy about his own affairs, that he had not perceived their approach. The ground was covered with soft sand, so that the hoofs made no noise, and with all his keen sense of hearing—for he possesses that in proportion to his large ears—he had not caught a sound. He was hard at work, and never looked towards them. In fact, he was seen to raise his head at intervals, and look towards the point whither the ostriches had gone, and all his gazing was in that direction. The party had, therefore, a good view of the animal without being observed by him; and they watched his manoeuvres with interest.

Swartboy and the Kaffir held the dogs in their leashes, and all remained silent as statues.

Now what was the little fennec doing?

At first the spectators were puzzled to make out, but presently all was explained.

When they first saw him he was at a distance of several yards from the nest, and going farther from it, on the opposite side to that where the hunters had halted. His tail was towards them, and the fore-part of his body appeared to be raised as if his paws rested upon something. This something was seen to be an ostrich’s egg. He was pushing it before him along the ground, using his feet alternately, and forcing the egg to turn. This action was similar to that of some unfortunate fellow on the tread-mill, except that it was voluntary on the part of the fennec.