... shall consider all Egypt commencing from the Cataracts and the city of Elephantine to be divided into two parts, and to claim both the names, the one a part of Libya and the other of Asia. For the Nile , beginning from the Cataracts, divides Egypt into two parts as it flows to the sea. Now, as far as the city Cercasorus the Nile flows in one channel, but after that it parts into three. One of these...