The city of Alexandria is adjacent to the sea. It was here that St. Mark, preaching the gospel, bore the episcopal dignity; and outside the eastern gate of the city is the monastery of the saint, with the church in which he formerly reposed. But the Venetians coming there obtained his body by stealth, and carrying it on shipboard, sailed home with it. Without the western gate is a monastery called The Forty Saints, in which, as well as in the former, there are a number of monks. The port is to the north of the city; on the south is the entrance to the Gyon, or Nile, which waters Egypt, and, running through the middle of the city, empties itself into the sea in the aforesaid port. We entered the river, and sailed to the south six days, and came to the city of Babylon of Egypt, where once reigned king Pharaoh, under whom Joseph built the seven granaries still remaining. When we went on shore at Babylon, the guards of the city carried us before the prince, a Saracen named Adalhacham, who inquired of us the object of our journey, and asked us from what princes we had letters. Whereupon we showed him the letters of the aforesaid sultan, and those of the prince of Alexandria; but they were of no service to us, for he sent us to prison, where we remained six days, and then, having consulted together, we obtained our liberty by giving more money. He then gave us letters, which effectually protected us from any further exactions, for he was second in command to the Emir-al-Mumenin aforesaid. Nevertheless, when we entered the cities mentioned in the following narrative, we were never allowed to leave them until we had received a paper or impression of a seal, for which we had to pay one or two deniers. There is in this city a patriarch, by name Michael[46], who by the grace of God rules over the bishops, monks, and other Christians throughout Egypt. These Christians are tolerated by the pagans, on condition of paying for each person an annual tribute to the aforesaid prince, and they live in security and freedom. This tribute is three, or two, or one aureus, or for a meaner person thirteen deniers. But he who cannot pay thirteen deniers, whether he be a native or a stranger, is thrown into prison, until God or some good Christian redeem him.