XV. His father now ordered him to proceed to Cyprus, and to attack Ptolemy, who was in possession of that island. He was forced to obey this summons, but as he was very unwilling to desist from the war in defence of the liberties of Greece, a much more noble and glorious struggle, he first endeavoured to bribe Ptolemy's lieutenant in command of the garrison of Sikyon and Corinth to evacuate those cities and render them independent. As this attempt failed he quickly set sail, collected a large force, and proceeded to Cyprus. Here he fought a battle with Menelaus, Ptolemy's brother, and at once defeated him. Shortly afterwards Ptolemy himself came to Cyprus with an immense fleet and army. The two commanders now interchanged messages of scornful defiance. Ptolemy bade Demetrius put to sea before his own host assembled and overwhelmed him, while Demetrius offered to permit Ptolemy to withdraw from Cyprus on condition that he would give up Corinth and Sikyon. The battle which ensued was one of the deepest interest, not merely to the combatants themselves, but to all the other princes, since its issue would determine not only the fate of Cyprus and Syria, but would at once render the victor the most powerful man in all the world. XVI. Ptolemy advanced with a fleet of one hundred and fifty sail, and ordered Menelaus, when the battle was at its hottest, to sally out from Salamis with his sixty ships and throw the fleet of Demetrius into disorder by attacking it in the rear. Demetrius sent ten ships to oppose these sixty, for the mouth of the harbour (of Salamis) was so narrow that this number sufficed to close it. He himself now got his land force under arms, disposed it upon several neighbouring promontories, and put to sea with one hundred and eighty ships. He bore straight down upon the enemy's fleet, and completely defeated it. Ptolemy himself, when all was lost, escaped with only eight ships, the sole survivors of his fleet. All the rest were sunk, except seventy which were captured with their crews on board. All his numerous train of servants, friends and wives, all his arms, money and military engines, which were stationed near the fleet in transports, were captured by Demetrius, who at once conveyed them to his own camp. Among the spoil was the celebrated Lamia, who had at first been brought into notice by her musical skill, for she was an admirable flute-player, and who had afterwards become notorious by her amours. Her beauty was at this time somewhat faded, yet, although Demetrius was much younger than herself, she so fascinated and enslaved him by her charms, that, though many other women wished for his love, he cared only for her. After the sea-fight, Menelaus held out no longer, but surrendered Salamis to Demetrius, with all his ships, and a land army of twelve hundred cavalry and twelve thousand heavy-armed infantry.