it is situated about three kilometres up the Wadi Nubitra, among high hills. One of the many heads of the small Wadi Nubitra leads northwards by an easy pass into the head of Wadi Hamida. The =Wadi Hamida= heads in the mountain of the same name, and courses parallel to Wadi Aqwem, from which it is separated by a long ridge of high hills. About one and a half kilometres below its head at the easy pass into Wadi Nubitra above referred to, it receives a small gully from the east; by following up this gully, which is narrow and tortuous, for about a kilometre, one can reach a tiny spring called =Megwel Hamida=. When I visited it in April 1908, the spring was a mere trickle, very salt; a galt a little further up the gorge was dry at the same time, but bears signs of holding a useful store of water after rain. About three kilometres below the gully containing the spring, Wadi Hamida reaches an opening whence one can either go south-east for two kilometres to the easy pass of Bani Sana, or north-west through a gap in the longitudinal ridge which encloses the wadi on the left. Wadi Hamida itself, however, keeps straight on its course past Gebel Geror, and joins Wadi Baueiwai south-east of the hill of Ti-Keferiai. The heads of Wadi Hamida contain a fair amount of vegetation, but its lower parts are more barren and very sandy. =Wadi Di-it= drains the north parts of the hill mass of Sul Hamid, and courses north-east to reach the coast independently about latitude 22° 29′. It has not been explored, and is of no great importance; vegetation in it is probably confined to its upper parts among the hills. Of its total course of about thirty-five kilometres, a large portion lies over the sandy coast-plain. =Wadi Eikwan= is a broad shallow and sandy channel draining the high jagged hill called Qash Amir and the eastern parts of the low hill mass of Sul Hamid. Its head is about four kilometres south of Qash Amir, in the flat sandy plain. Taking at first a northerly direction past the west side of Qash Amir, it turns to the north-east further on and crosses the coast-plain to reach the sea only a little south of the mouth of Di-it. Its total length is about thirty six kilometres, and its average slope is about nine metres per kilometre.