To make the scene still more interesting, a wind set in from the sea, and drove the masses of clouds against the mountains. We saw the plains covered and again laid bare, as masses of clouds, like the irregular columns of an army, passed over it--drove against the mountains--rose higher and higher up its sides--and at last swept over us and by us in huge piles. It was not one large dense cloud, but a multitude of clouds of various sizes, and at different heights. The sun pouring its flood of light upon these masses, so various in height and density and rapidity of motion, presented the most brilliant and perpetually varying spectacle that I have ever seen. We had all the variety of tints and colouring that light and shade can make, and that ever-changing aspect which is presented by the kaleidoscope. There was, however, no rain; for while we often have clouds on these mountains, there has no rain fallen since I reached Beyroot, which is now more than six weeks. We spent the night at the foot of the snows, where the former night was passed; and having packed our minerals, shells, and flowers, which we had collected, set off for Bru-ma-nah. We took a more direct road than the one by which we came, as we wished to see as much of the mountain as possible. We passed along a great ridge that ran from our tents, at the foot of the cone, with various irregularities, on to Bru-ma-nah. We found it much as the ridge on which the coal-pits of Corneil are situate. The upper part of it much of the way is of the sandstone formation. On the higher part of this is a stratum of very fine puddingstone. Almost everywhere, in this sandstone formation, we find petrified wood, much iron ore, iron stone, and at many places slate, and all the indications of coal. There can be no doubt that coal exists extensively in this formation; and, from the tour which we made, I should think that from one-sixth to one-fourth of this ridge was of the sandstone formation. It lies about midway up the mountain; has, generally considered, a horizontal position; but is at many places most singularly thrown out of its place. At the heads of hollows, and at the points of ridges, and often in other places, the limestone seems forced up, but retains its horizontal position: at other places, the sandstone is suddenly cut off, and begins again at a great distance above or below;--but my paper is full. LETTER V. _Bru-ma-nah, Aug. 2, 1836._