Our course thence lay eastward up the easy bed of the Fiumara, an eastern section of an old friend, the Wady Tiryam; it now takes the well-known name "Wady Sadr," and we shall follow it to its head in the Hismá. The scene is rocky enough for Scotland or Scandinavia, with its huge walls bristling in broken rocks and blocks, its blue slides, and its polished sheets of dry watercourse which, from afar, flash in the sun like living cataracts. On the northern or right bank rises the mighty Harb, whose dome, single when seen from the west, here becomes a Tridactylon, splitting into three several heads. Facing it, the northernmost end of the Dibbagh range forms a truncated tower, conspicuous far out at sea: having no name, it was called by us Burj Jebel Dibbagh. A little further to the east it will prove to be the monstrous pommel of a dwarf saddleback, everywhere a favourite shape with the granite outcrop. MM. Clarke and Lacaze, who had never before seen anything higher that the hillocks of the Isle of Wight or the Buttes de Montmartre were hot upon ascending the almost perpendicular sides of the Burj, relying upon the parallel and horizontal fissures in the face, which were at least ten to twenty feet apart. These dark marks, probably stained by oxide of iron, reminded me of those which wrinkle the granitic peaks about Rio de Janeiro, and which have been mistaken for "hieroglyphs." The valley-sole is parti-coloured; the sands of the deeper line to the right are tinctured a pale and sickly green by the degradation of the porphyritic traps, here towering in the largest masses yet seen; while the gravel of the left bank is warm, and lively with red grit and syenitic granite. Looking down the long and gently waving line, we feel still connected with the civilized world by the blue and purple screen of Sinai forming the splendid back-ground. Everything around us appears deserted; the Ma'ázah are up country, and the Beni ‘Ukbah have temporarily quitted these grazing-grounds for the Surr of El-Muwaylah. We camped for the night, after a total march of eleven miles, at the Sayl el-Nagwah, a short Nullah at the foot of a granite block similarly named; and a gap supplied us with tolerable rain-water.