Our friends were cordially received by the commandant of the post, Colonel Abd-el-Kader, who had served with Baker in the famous expedition, and was highly complimented by that gentleman for his zeal and efficiency. The colonel invited them to his quarters, and as soon as the greetings were over he assigned them a place where their tents could be erected. The youths were not at all sorry to exchange their quarters on the steamer for their canvas houses, whose qualities they had tested in the journey from Korosko to Berber. Frank declared he was rapidly becoming an Arab, and thought it not at all improbable that he would prefer a tent to a substantial dwelling-place for the rest of his life. Fred said he would wait a while before declaring himself, as he was a long way from renouncing the comforts of a home in New York or any other civilized city. "Be careful about one thing," said the colonel as they left his quarters; "remember you are now in the country of the white ants, and they will eat anything except iron. They have even been known to gnaw holes in a stove-pipe, if some of my officers tell the truth, and it is currently reported that they have ruined our best grindstone. Everything not enclosed in tin or something stronger is subject to their teeth, and you must be constantly on the lookout for them." The boys promised to be careful, and as they watched the landing of their stores they gave directions to Abdul, forgetting that he had been in the country before and knew all about it. The goods were properly stowed, those not enclosed in tin cases being hoisted on posts, to hold them clear from the ground, and the feet of the posts placed in pots of water. At night when the boys retired they were obliged to be careful of all their garments and hoist them out of reach. Of course it happened that the second night one of them forgot the necessary precaution, and left his boots on the floor of the tent. In the morning he found they had been riddled by the ants and were no longer water-proof, and their usefulness as coverings for the feet had passed away. He was more careful in future, and learned to appreciate the ants at their true value as destroyers. Almost everything except metals yields to the teeth of these insects. Ordinary timber, carefully dried and painted, is attacked by them, and it was not unusual to find them devouring the gun-stocks of the soldiers or the wood-work of machinery and implements of daily use. One of the officers found his sword-belt had been eaten on a hook where he hung it during the night, and there was hardly a garment belonging to the men of the garrison that had not suffered in some way from the pests. Fred recalled some familiar words of 'Pinafore' relative to sisters, cousins, and aunts, and wondered if the author had the ants of the Soudan in mind when he penned the now antiquated lines.