Γεωγραφικά 17.1

Such then, if not worse, was the condition of the city under the last kings. The Romans, as far as they were able, corrected, as I have said, many abuses, and established an orderly government, by appointing vice-governors, nomarchs, and ethnarchs, whose business it was to superintend affairs of minor importance.
The greatest advantage which the city possesses arises from its being the only place in all Egypt well situated by nature for communication with the sea by its excellent harbour, and with the land by the river, by means of which everything is easily transported and collected together into this city, which is the greatest mart in the habitable world.
These may be said to be the superior excellencies of the city. Cicero, in one of his orations, in speaking of the revenues of Egypt, states that an annual tribute of 12,500 talents was paid to (Ptolemy) Auletes, the father of Cleopatra. If then a king, who administered his government in the worst possible manner, and with the greatest negligence, obtained so large a revenue, what must we suppose it to be at present, when affairs are administered with great care, and when the commerce with India and with Troglodytica has been so greatly increased ? For formerly not even twenty vessels ventured to navigate the Arabian Gulf, or advance to the smallest distance beyond the straits at its mouth; but now large fleets are despatched as far as India and the extremities of Ethiopia, from which places the most valuable freights are brought to Egypt, and are thence exported to other parts, so that a double amount of custom is collected, arising from imports on the one hand, and from exports on the other. The most expensive description of goods is charged with the heaviest impost; for in fact Alexandreia has a monopoly of trade, and is almost the only receptacle for this kind of merchandise and place of supply for foreigners. The natural convenience of the situation is still more apparent to persons travelling through the country, and particularly along the coast which commences at the Catabathmus; for to this place Egypt extends.
Next to it is Cyrenaea, and the neighboring barbarians, the Marmaridae.

Then follows the isthmus, extending to the Red Sea near Berenice, which has no harbour, but good landing-places, because the isthmus is conveniently situated. Philadelphus is said to be the first person that opened, by means of his army, this road, which had no supply of water, and to have provided stations. This he did because the navigation of the Red Sea was difficult, particularly to those who set out from the recess of the bay. Experience showed the great utility of this plan, and at present all the Indian, Arabian, and such Ethiopian merchandise as is imported by the Arabian Gulf is carried to Coptos, which is the mart for such commodities. Not far from Berenice is Myos Hormus, a city with a naval station for vessels which navigate this sea; at no great distance from Coptos is the city of Apollo, so that two cities are the boundaries of the isthmus, one on each side. But at present Coptos and Myos Hormus are in repute, and they are frequented.
Formerly, the camel-merchants travelled in the night, directing their course by observing the stars, and, like mariners, carried with them a supply of water. But now watering-places are provided: water is also obtained by digging to a great depth, and rain-water is found, although rain rarely falls, which is also collected in reservoirs. It is a journey of six or seven days.
On this isthmus are mines, in which the emeralds and other precious stones are found by the Arabians, who dig deep subterraneous passages.