_19th March._ Our road was S. by W. over an immense plain, bordered by low hills in the distant horizon. After about one hour we passed Wady Dimoka-yb (a Bishary name) (وادي ديموكايب), full of dry shrubs. The day was intensely hot. I thought I could perceive a considerable alteration in the climate, to the south of Shigre, it being much warmer than to the north of that place. Eight hours and a half passed Wady Abou Daey (وادي ابو ضَيّ). All these Wadys extend from east to west. Eleven hours arrived at the wells of Nedjeym (ابيار النجيم); in approaching which, we passed, long after sunset, by several tomb-stones, called Gobour Adjouad el Arey-ab (قبور اجوَد الاريَاب); “the bravest men of Are-ab lie buried here,” said one of our chiefs; “their companions carry them from many days journies to this spot, that they may repose in the cool neighbourhood of the wells, and their deeds be remembered by those who pass here.” The Are-ab are a tribe of Bisharein. We had already sent some men to the wells early in the morning, to clear them of the sand, for notwithstanding the report of the caravan travellers which we received at Nabeh, our people still believed that some water might be procured here. But we found them sitting with melancholy countenances near the well, where they had been digging for several hours, without finding any thing but wet sand. Even the Bedouins now became alarmed, and nothing was left for us but to endeavour to reach the Nile by forced marches; each of us had some water left, though not more than sufficient for a single day. Nedjeym is a collection of three or four wells, where the water oozes from the ground, and collects in sand pits of twenty or thirty feet in depth. The winds often choak these pits with sand, and almost every caravan that passes must be at the trouble of digging them out. We only found one accessible, the others being filled with sand to the brim. In times of dryness, such as occurred this year, the wells are exhausted, but when the rains are not deficient they produce excellent water, in sufficient quantity to supply a caravan of middling size. The low insulated rocky hills which surround the Nedjeym are composed of chlorite and petrosilex.