“Sheikh Izz Edin, son of Ibn Gamar, says in his book on medicine (and I have copied from the autograph manuscript), that the source of the Nile is from Mount Gumr beyond the equator by 11° and 20′. From this mountain start ten rivers from various sources, each five of which flow into a great round lake, which is distant from the extreme uninhabited country of the west by 57°, and from the equator 7° and 31′ to the south, and these two lakes are equal, the diameter of each being 5°. Out of each one of these two lakes flow two rivers which empty into one great lake in the first zone. It is distant from the uninhabited country of the west by 53° and 30′. It is distant north of the equator 2°. Each one of these four rivers empties itself separately into this great lake, and from it comes out one single river, and this is the Nile. It passes through the country to Nubia, and joins another river, whose source is from another part near the equator, from a great round lake whose diameter is 3°, and which is distant from the confines of inhabited country on the west of 71°. “After it has passed the city of Cairo, it reaches a town called Shatanuf, where it divides into two rivers, both of which flow into the salt sea, one of these branches being called the Rosetta River, and the other the Damietta River. This river reaches to Mansoura, and there branches off from it the river called Ashmun, which empties into a lake there, and the remainder flows into the salt sea near Damietta, and here I give a plan of Mount Gumr. “The historian El Gahez, in his description of countries, says that ‘the source of the river of Sindh[25] and the river Nile is from one place,’ and that he came to this conclusion because ‘the two rivers rise at the same time, and because the crocodile is found in them both,’ and that ‘the kind of land-cultivation upon both is the same.’ The historian Mashi, in his ‘History of Egypt,’ says that in the country of Tegala is a Soudanese tribe of the same name in whose land gold crops up, and that in their land the Nile splits and becomes two rivers, the one branch being the Nile of Egypt, and the other being green, which flows eastward and traverses the salt sea to the landing of Sindh, and this is the river called Meharaam.