A little beyond, near the hill, or rather slope, called Shʿabet el Kadím, the latter part of which name seems, indeed, to have some reference to antiquity, we found the first Roman milestone, with the inscription now effaced; but further on, Mr. Overweg, who went on foot and was far behind the main body of our caravan, succeeded in discovering some milestones with inscriptions, which he regretted very much not being able to show to me. Hereabouts commences the region of the batúm-tree, which, with the fresh green of its foliage, contributes a good deal to enliven and adorn some favoured spots of this sterile, gravelly tract. To the left of our path were some remarkable basaltic cones, starting up from the calcareous ridge. The ground was strewn with numerous flint-stones. About four o’clock P.M. I went to look at a curious quadrangular and regularly-hewn stone, three feet in breadth and length, but only eight inches thick, which was standing upright at some distance from the caravan. It was evidently meant to face the west; but no trace of an inscription was to be seen. About a mile further on we encamped at the foot of the western chain, which rose to a height of about 300 feet, and formed a narrow cleft with the eastern chain, which at this point closes upon it. In this corner (which collects the humidity of two valleys), besides several batúm-trees, a little corn had been sown. Panthers are said to be numerous in this region. The next day we directed our march towards the pass, crossing the dry beds of several small torrents, and a broader channel bordered by plenty of batúm-trees. After an hour’s march, we had reached the summit of the pass, which now began to widen, the heights receding on each side, and a more distant range bounding the view. We found in the holes of the rocky bottom of Wadi Mezummíta, which we crossed about half-past eight, several pools of rain-water, affording us a most refreshing drink; but it was quite an extra treat, owing to recent heavy rains which had fallen here, for in general the traveller cannot rely on finding water in this place. The ground becoming very stony and rugged, our progress was excessively slow—not above half an English geographical mile in seventeen minutes. The hills on our right displayed to the view regular layers of sandstone. Another long defile followed, which at length brought us to a plain called Wadi Lilla, encompassed by hills, and offering several traces of former cultivation, while other traces, further on, bore testimony to the industry of the Romans. A small herd of goats, and the barking of a dog, showed that even at present the country is not wholly deserted. In our immediate neighbourhood it even became more than usually enlivened by the passage of a slave-caravan, with twenty-five camels and about sixty slaves, mostly females.