_July 7._—Owing to the camels having strayed to a great distance, we started at a late hour, still leaving the Tuarek chiefs behind, who wanted to settle some business with the Tawáti, and for this purpose had changed their dirty travelling-dress for showy caftans and bernúses. We ascended the higher level, and continued along it, crossing some small beds of watercourses overgrown with herbage, till, after a little more than four miles, we had to descend into a deep and wild ravine which led us to a vale. Having again ascended, we then came to the wide and regular valley called Erazar-n-Hágarné, bordered by steep cliffs from 150 to 200 feet high, and richly clothed with herbage. Following the windings of this large wady, which evidently has received its name from the circumstance that the Hogár or Hágara pasture their camels chiefly hereabouts, we reached the point where it is joined by the valley called Áman sémmedné, and encamped near a fine talha-tree in order to allow Hatíta to come up. This valley has its name from the cold water which at times descends from the plateau in floods, of which the deeply worn channel bears evident traces; it is joined at this place by an important branch valley and several smaller ravines. When the heat of the sun began to decline, I took a walk through the valley, and being attracted by a circle laid out very regularly with large slabs like the opening of a well, I began to ascend the steep cliffs opposite the mouth of the valley of Áman sémmedné, rising to a height of about 500 feet, and which, as I clearly saw, had been repeatedly ascended. The cliffs are here, as is usual in this formation, broken into regular strata, and steep flat blocks standing upright give them an imposing appearance. My search here, however, led only to the discovery of the well-chiselled form of a single bullock, in exactly the same style as that in Wady Telísaghé, though it had suffered a little from its exposed situation; but the whole appearance of the locality shows that in former times it contained more of this kind. On the plain above the cliffs is another circle regularly laid out, and, like the many circles seen in Cyrenaica and in other parts of Northern Africa, evidently connected with the religious rites of the ancient inhabitants of these regions. Quartz pebbles were scattered about this part of the valley. Our people meanwhile had been busy laying in provision of dry herbage for the next marches, during which we were told our camels would scarcely find anything to feed upon; and our Tuarek friends, when they at length arrived for their supper, did the same.