. . .uous hill is one of four mamelons thus disposed in bird's-eye view; the dotted line shows the supposed direction of the lode in the Jibál el-Bayzá, the collective name.

On the plain to the north of the Jebel el-Abyaz also, I found curdles of porphyritic trap, and parallel trap-dykes, cutting the courses of large-grained grey granite: as many as three outcrops of the former appeared within fourteen yards. This convinced me that the whole of the solid square, thirty kilometres (six by five), where the quartz emerges, is underlaid by veins and veinlets of the same rock. Moreover, I then suspected, and afterwards ascertained, that the quartz of the Jibál el-Bayzá, as the Bedawin call this section, is not a local peculiarity. It everywhere bursts, not only the plain between the sea and the coast-range, but the two parallels of mountain which confine it on the east. In fact, throughout our northern march the Arabs, understanding that its objec. . . Read More