On the 4th of September they encamped on the summit of a sand-hill, in a broad valley, near the village of Tintellust, the residence of the chief Amur, under whose protection they were now to proceed. The chief received them in a friendly way, and assured them that, even though Christians, the dangers and difficulties they had gone through would suffice to wash off their sins, and that they had nothing to fear but the climate and the thieves. He told them that they were welcome to proceed to Soudan at their own risk; but that if they wished for his protection, they must pay him handsomely. While the camp remained here, Dr Barth paid a visit to the town of Agades, a place once of great importance, and still containing about seven thousand inhabitants, a large number engaged as tradesmen or in commerce. It is situated on the borders of the desert, surrounded by lawless tribes. He performed his journey on the back of a bullock, with his luggage behind him. He was received in a very friendly way by the sultan, who told him that he had never before heard of the English--not suspecting from whom the gunpowder he used was obtained. The doctor, after placing the treaty before the sultan, said that the English wished to enter into friendly relations with all the chiefs and great men of the earth, in order to establish commercial intercourse with them. He then told him that they had been deprived of nearly all the presents they were bringing for himself and the other princes of Soudan. At this he expressed the greatest indignation. After spending two months at Agades, the doctor returned to Tintellust. Here the expedition was detained six months waiting for an escort, without which they could not proceed with any degree of safety to Soudan. At length, on the 5th of December, the first body of the salt-caravan, for which they had been waiting, arrived from Bilma, and on the 12th of December, 1850, they began to move. The caravan looked like a whole nation in motion: the men on camels or on foot; the women on bullocks or asses, with all the necessaries of the little household, as well as the houses themselves; a herd of cattle, another of milk-goats, and a number of young camels running playfully alongside, and sometimes getting between the regular lines of the laden animals. The old chief walked ahead like a young man, leading his _mahary_ by the nose-cord. The ground was very rocky and rugged, and looked bare and desolate in the extreme. Several high peaks, which characterise this volcanic region, rose on either side.