One evening at a late hour, when I was reposing in my tent and about to go to bed, he sent for me in the greatest hurry, as if my life or death were at stake; and upon hastening thither, anxious to hear what was the matter, I was told that the vizier had been informed of a person being in the encampment who, like my old friend the mʿallem Katúri, had accompanied the memorable expedition of Ámba Sámbo, the warlike chief of Chámba, towards the country of Ígbo on the sea-coast. But while the latter had gone to Mbáfu with the main body of the army, the adventurous proceedings of that person had not even been limited by the boundaries of the sea; and he informed me in the most positive and conclusive manner that the body of troops which he accompanied had sailed along a rocky coast for fifteen days, when they unexpectedly met with an island, where they took possession of a number of muskets, their owners, who were all dressed in jackets, having taken refuge in their large vessel. He did not doubt that these people were Christians, and according to the description which he gave me of the vessel, there can scarcely be any doubt that it was a European one; but I did not feel quite certain as to the point whether he had navigated a large river, or the open sea, though I think it probable they went down the Niger, and surprised one of the European traders at the mouth of the river. At any rate, however, this is an extremely interesting circumstance. I apprehend that the chiefs of Ádamáwa will hesitate in future to extend their expeditions so far, after an English steamer has gone up the river to the very heart of their own country. It was this same Bórnu horseman who informed me that, on that expedition, all the horses had died from a disease proceeding from worms. While chatting together upon these subjects till after midnight, I had an opportunity of giving the vizier some little information regarding the peculiar character of the maritime power of the imám of Maskat, of which he had never heard before, and which interested him exceedingly. With the Arabs of Timbúktu, also, this subject formed a topic of the highest interest, as they had no idea that there were people of the same faith living on the eastern shores of this continent; and they delighted in the thought, that even in those regions there were Moslems, who were not quite destitute of political power. For, although the famous traveller Ebn Batúta has given to his countrymen an account of these regions, it was only in Sókoto that I met with a man, the learned Káderi dan Táffa, who knew Sofála by name.