Photo-Metal-Process. Survey Dept. Cairo 1910. (60-190)] =Wadi Abu Ghusun= commences its course among the high mountains of Gebel Abu Ghusun, north of Gebel Hamata. Pursuing a northerly course for about ten kilometres, it passes close east of the sharp granite peak of Gebel Hefeiri, then turns more to the east, receiving Wadi Romit as an important tributary from the west near the bend, and reaches the sea in about latitude 24° 29′. =Wadi Romit=, a tributary of Abu Ghusun, originates in the granite mountains called Gebel el Abiad, near the parallel of 24° 20′ and follows a winding course in a general easterly direction for about sixteen kilometres to its junction with Wadi Abu Ghusun. It receives several important tributaries. The chief of these, =Wadi Shoab=, originates close to the south-west of Gebel Shoab, where there is an easy pass into the Wadi el Abiad. Another tributary of Romit, the =Wadi Abu Hegilig=, drains the south part of Gebel Um el Abbas, while a third is the =Wadi Hefeiri=, draining the hills round the granite peak of the same name. All these tributaries, like Wadi Romit and Wadi Abu Ghusun itself, contain abundance of trees, and have a rather rapid fall. =Wadi Hamata= drains the eastern flanks of the high hills north of Gebel Hamata, its principal heads being about latitude 24° 15′. Only the heads of this wadi have been surveyed; it follows a winding course among the lower hill country and reaches the sea in about latitude 24° 24′. Of the three wadis draining seawards south of Hamata, called =Wadi Haratreit=, =Wadi Khashir=, and =Wadi Mikbi=, very little is known, not even their heads having been visible from the stations which I occupied. The summits of the mountains drained by them have, however, been mapped, and their courses are approximately known from the accounts of Floyer; these are indicated on the map probably in nearly their true positions. Draining mostly steep and precipitous mountain faces, the upper parts of these wadis must have an extremely rapid fall, and consequently a rough stony floor.