But the emperor was soon solicited to violate the treaty, and to join his arms with the Venetians, the perpetual enemies of Genoa and her colonies. While he compared the reasons of peace and war, his moderation was provoked by a wanton insult of the inhabitants of Pera, who discharged from their rampart a large stone that fell in the midst of Constantinople. On his just complaint, they coldly blamed the imprudence of their engineer; but the next day the insult was repeated; and they exulted in a second proof that the royal city was not beyond the reach of their artillery. Cantacuzene instantly signed his treaty with the Venetians; but the weight of the Roman empire was scarcely felt in the balance of these opulent and powerful republics. 51 From the Straits of Gibraltar to the mouth of the Tanais, their fleets encountered each other with various success; and a memorable battle was fought in the narrow sea, under the walls of Constantinople. It would not be an easy task to reconcile the accounts of the Greeks, the Venetians, and the Genoese; 52 and while I depend on the narrative of an impartial historian, 53 I shall borrow from each nation the facts that redound to their own disgrace, and the honor of their foes. The Venetians, with their allies the Catalans, had the advantage of number; and their fleet, with the poor addition of eight Byzantine galleys, amounted to seventy-five sail: the Genoese did not exceed sixty-four; but in those times their ships of war were distinguished by the superiority of their size and strength. The names and families of their naval commanders, Pisani and Doria, are illustrious in the annals of their country; but the personal merit of the former was eclipsed by the fame and abilities of his rival. They engaged in tempestuous weather; and the tumultuary conflict was continued from the dawn to the extinction of light. The enemies of the Genoese applaud their prowess; the friends of the Venetians are dissatisfied with their behavior; but all parties agree in praising the skill and boldness of the Catalans, 531 who, with many wounds, sustained the brunt of the action. On the separation of the fleets, the event might appear doubtful; but the thirteen Genoese galleys, that had been sunk or taken, were compensated by a double loss of the allies; of fourteen Venetians, ten Catalans, and two Greeks; 532 and even the grief of the conquerors expressed the assurance and habit of more decisive victories. Pisani confessed his defeat, by retiring into a fortified harbor, from whence, under the pretext of the orders of the senate, he steered with a broken and flying squadron for the Isle of Candia, and abandoned to his rivals the sovereignty of the sea. In a