capitulation and retreat [441] concluded the second enterprise of Shiracouh; and Noureddin reserved his abilities for a third and more propitious occasion. It was soon offered by the ambition and avarice of Amalric or Amaury, king of Jerusalem, who had imbibed the pernicious maxim, that no faith should be kept with the enemies of God. [442] A religious warrior, the great master of the hospital, encouraged him to proceed; the emperor of Constantinople either gave, or promised, a fleet to act with the armies of Syria; and the perfidious Christian, unsatisfied with spoil and subsidy, aspired to the conquest of Egypt. In this emergency, the Moslems turned their eyes towards the sultan of Damascus; the vizier, whom danger encompassed on all sides, yielded to their unanimous wishes, and Noureddin seemed to be tempted by the fair offer of one third of the revenue of the kingdom. The Franks were already at the gates of Cairo; but the suburbs, the old city, were burnt on their approach; they were deceived by an insidious negotiation, and their vessels were unable to surmount the barriers of the Nile. They prudently declined a contest with the Turks in the midst of a hostile country; and Amaury retired into Palestine with the shame and reproach that always adhere to unsuccessful injustice. After this deliverance, Shiracouh was invested with a robe of honor, which he soon stained with the blood of the unfortunate Shawer. For a while, the Turkish emirs condescended to hold the office of vizier; but this foreign conquest precipitated the fall of the Fatimites themselves; and the bloodless change was accomplished by a message and a word. The caliphs had been degraded by their own weakness and the tyranny of the viziers: their subjects blushed, when the descendant and successor of the prophet presented his naked hand to the rude gripe of a Latin ambassador; they