_June 28._—About an hour after we had begun our march along the line of green herbage, we came to a temporary well called Ahitsa, containing very fine rain-water, but only for a period of about two months in the year. Having filled two of our water-skins, we continued our march, and soon, to our great joy, got sight of two white tents, belonging the one to Mohammed Bóro, the other to Mohammed eʾ Sfaksi, and pointing out to us the encampment of the caravan. It had been pitched on open ground, in the midst of the strip of green herbage, and surrounded with a rich border of talha-trees. The place offered good pasture for the camels; and a small encampment of other Tinýlkum not belonging to our caravan, but merely pasturing their camels and goats here, had been formed near the trees. The whole presented an animated picture. Our camel-drivers are said to possess, in the sand-hills bordering this valley on the south side, considerable stores of dates and corn, and to have taken from thence their supplies for the road. The whole character of this landscape appeared to me so peculiar that, the following morning before we started, I made a sketch of it from the elevated stony ground to the north of the channel, which here exhibited evident traces of a small waterfall formed by the heavy rains. Stones had been laid here in the form of a circle, as a place of prayer. The whole valley was about four miles broad; the locality is called Tesémmak. [Illustration] When we started next morning, we formed a tolerably large party, with sixty-two camels, which were arranged in four strings, one of which consisted of thirty-three animals, each fastened to the tail of the preceding one. The valley was enlivened by a small herd of gazelles, which Overweg and I tried for a moment to pursue. Having passed a well called Tafiyúk, at a place where the sand-hills jut out into the valley, we encamped about half an hour beyond, near another well containing rain-water for a short time of the year, and called Em-éneza. Two branches of the wady unite here, and distinct traces of the great force of the last torrent remained in the broken condition of the ground. Here we remained encamped for the two following days, in order to allow Mr. Richardson and the Azkár chiefs to come up. I spent the time sometimes writing and studying, at others roving about or musing while seated on some elevated rocks at the border of the rising ground. Músa was our constant visitor, and gave us all the information required, though he was not very intelligent. There had been some small differences between us and our camel-drivers, who, though in other respects not uncouth or uncivil, had, from religious principles, sometimes assumed a rather hostile position towards us. We now effected a general reconciliation, and there was every reason to believe that we should go on well with them.