Leo and Natty had been amusing themselves outside the camp. “Here; see what we have got!” cried Leo, returning after they had wandered to a short distance. “Hillo!” he exclaimed, turning round as I went out to meet them. “Why, it was a long creature just now; and see, it has turned into a ball; and a big ball it is!”

The ball of which Leo spoke was covered with large black scales, somewhat the size and shape of the husk of the artichoke, which overlapped each other in a very curious and beautiful manner. David quickly solved the mystery of the scaly ball. Being allowed to remain quiet for a few minutes, it unrolled itself, when it was seen to possess a head and a broad tail, likewise covered with scales. He pronounced it to be one of the manides or scaly ant-eaters—a rare animal, and seldom seen. It had a long extensile tongue, furnished with a glutinous mucous for securing its insect food. It was entirely destitute of teeth, so that it was evident it must suck in the creatures it caught, and swallow them whole.

David said that the manides are very inoffensive animals; that they live solely on ants and termites. They burrow to a great depth in the ground. For this, as also for extracting their food from ant-hills and decayed wood, we found that the creature’s feet were armed with powerful claws, which it could double up when walking.

“We are getting into a thorny district,” observed Donald, who had joined us, “very different to the thornless one we have passed through. What do you think of this?” he observed, stooping down and picking up a round disc with a sharp thorn in the centre. “Suppose this was to run into a poor animal’s foot; it would take him months to get it out, even if he did not become lame for life.”

Soon after we camped Donald started off on a hunt by himself. He had not been gone long when we saw him returning from the north, with a gemsbok, or oryx, as I have before called it, across his saddle. Considering the weight he carried, he came pressing on at a rapid rate. He was not a man much given to exhibiting his feelings, but I saw that something was the matter.

“Quick, lads!” he exclaimed. “We must get ready to defend our camp without loss of time. I thought as I rode along that I would just take a look at our inhospitable friends, and see what they were about. When I had got halfway between this and their village, I caught sight of a large number of them stealing along across the plain. I think they must have seen me, or perhaps they took me for a cameleopard or ostrich; for I only showed for a moment behind an ant-hill, then quickly again got under cover to reconnoitre them. There are some two or three hundred fellows at least, and by the way they were marching I am very certain that they intend to attack us. I had just shot this oryx, and I had no wish to leave it for them, or I might have been here sooner; but there is time to get ready, if we are sharp about it.”

Stanley, on hearing this, was in his element. He immediately ordered out all hands to cut down the smaller trees from the group I spoke of, to form palisades. The waggons and carts were placed on one side, while palisades were fixed all round, and strong cross-beams secured to them. This done, we set to work to throw up an embankment, which, with the light sand, was easily accomplished, the upright posts keeping it in its place. We thus, in a wonderfully short time, had a little fortress which might have stood a siege against men armed with muskets. As we hoped our expected assailants had no firearms among them, we felt no apprehension as to the result. The chief danger was that they might try to starve us out, which there was a possibility of their doing should they persevere in surrounding us. We were working away till long after dark by the light of our fires. Scouts were sent out, but came back after some time stating that they could see nothing of the enemy. At length Stanley expressed his belief that Donald had been mistaken; at which our friend bristled up. No, he was certain he had seen an army of blacks; probably, however, when they caught sight of him, they might have thought better of the matter.

“But perhaps they were merely on a hunting expedition,” said David, “or collecting water-melons.”

“They were keeping too close together for hunting; and as they were following in our track, they would have found neither water-melons nor water-roots,” answered Donald. “Do not be too sure that they will not come yet. These people, as I fancy you have experienced, like to take their enemies by surprise; and they will not come on in broad daylight with tom-toms and shouts, depend on that. It would be well that those who have the morning watch should keep a bright look-out, or we may be attacked when we least expect it.”

Donald’s advice was not thrown away on me. I had just relieved Stanley, who had taken what would at sea be called the middle watch, Jack and Timbo being my companions. The night was perfectly still. I could hear the low muttering of lions in the far distance, with an occasional roar as some other creature approached to dispute their prey with them. Now and then the trumpeting of elephants reached me, probably on their way to some distant fountain, or in search of roots or water-melons. I thought it was almost impossible that any enemies could approach without being discovered. Still, I had been too well accustomed to discipline at sea not to keep as bright a look-out as I should have done had I known they were near. I was standing with Timbo on the north side of the fort, when he asked me to let him go out to a little distance.