Our rendezvous on occasions of these shooting matches, was generally on the summit of a low cliff of coral limestone, which stood a few hundred yards in rear of the town, and which extended two miles inland to the base of a gravel bank, perhaps 100 feet high, capped by a thin stratum of coarse black lava. The undermining of this bank is very rapid and considerable during the rainy season, so that large masses of the superincumbent lava are continually breaking off and rolling into the beds of numberless temporary torrents below. The period of the first appearance of this lava cannot have been more than a few hundred years ago, and volcanoes have certainly existed on this coast within the recorded history of the earth. A few miles in the interior, between Raheita and Tajourah, is still a range of hills evidently of igneous origin, called by the natives Jibel Jann, or Demon Mountains. The same name is also given to a more recently active, but very small volcano situated on the road to Shoa; and which was represented by the natives to be the residence of some turbulent genius confined there by Soloman, in accordance with some of the commonly received Arabic traditions. This coral reef, however, afforded the most interesting proof of the raising of the coast having occurred during the present existing state of things, as regards the direction of winds and currents in the surrounding sea, as also of its being constructed by the same species of Zoophites, who are now producing its counterpart in the present bay. I have stood on this old inland reef during the afternoon, when the reflection of the sun’s rays from the surface of the present immersed bed of coral, in front of Tajourah, has plainly showed the parallelism of its outer edge with that of the reef upon which I was standing, and a separation or indenture in the latter also corresponded exactly with the narrow channel in which anchorage is now found near to the present shore, and which must have been produced, in both cases, by the operation of similar natural causes, acting under exactly similar circumstances. More alteration in this part of the world has been produced by volcanic action than can be conceived by endeavouring to form an idea of it by comparison with the changes effected by the occasional outbreaks of Vesuvius or Etna. Convulsions of the earth, and ejection of molten lava upon a most extensive scale, can only account for the great alteration which has evidently, in modern times, taken place in the physical geography of the whole country of Arabia, the eastern shore of Africa, and probably over a considerable portion of the bed of the Indian Ocean in this neighbourhood.