About an hour before sunrise, when the thermometer stood at 41°, I set out to ascend an eminence north from our tent, which afforded me an excellent site whence to take the bearings of several prominent cones. After my return to the tent, we started together in advance of the camels, that we might have time to ascend the broad cone of Jebel Msíd, which had arrested our attention. We soon passed a well, or rather fountain, called Bir el ʿAr, which gives its name to some ancient monument (“sanem,” or idol, as it is called by the Arabs) at a little distance, and which the guide described as a kasr tawíl Beni Jehel, “a high fortress of the Romans.” The country was varied and pleasant, and enlivened, moreover, by flocks; but we saw no traces of agriculture till we reached the well called Hasi el abiár, beyond which we entered upon a volcanic formation. As we ascended along a small ravine, and entered another irregular mountain-plain of confined dimensions, we found the basalt in many places protruding from the surface. The more desolate character of the country was interrupted in a pleasant way by the Wady Nekhél, which has received its name from the number of palm-trees which grow here in a very dwarfish state, though watered by a copious spring. Following the windings of another small valley, we reached a plain at the foot of Mount Msíd, while on the right a large ravine led down from the heights. Here we commenced our ascent of the cone; and on the slope of the mountain we met with large pillars similar to those which I had seen in the ruins of Hanshír Settára. The pillars succeeded each other at regular distances up the slope, apparently marking the track to be followed by those ascending for religious purposes. The ascent was very gradual for the first twelve minutes; and twelve minutes more brought us to its summit, which was crowned with a castle of good Arabic masonry of about the thirteenth century. Its ruined walls gave us a little protection against the very strong blasts of wind; but we found it rather difficult to take accurate angles, which was the more to be regretted as a great many peaks were visible from this beautifully shaped and conspicuous mount.