19. While Cleopa'tra was thus employed in forwarding her own views, her sister, Arsin'oe was also strenuously engaged in the camp, in pursuing a separate interest. She had found means, by the assistance of one Gan'ymede, her confidant, to make a large division in the Egyptian army in her favour; and, soon after, by one of those sudden revolutions which are common in barbarian camps to this day, she caused Achil'las to be murdered, and Gan'ymede to take the command in his stead, and to carry on the siege with greater vigour than before. 20. Gan'ymede's principal effort was by letting in the sea upon those canals which supplied the palace with fresh water; but this inconvenience Caesar remedied by digging a great number of wells. His next endeavour was to prevent the junction of Caesar's twenty-fourth legion, which he twice attempted in vain. He soon after made himself master of a bridge which joined the isle of Pha'ros to the continent, from which post Caesar was resolved to dislodge him. 21. In the heat of the action, some mariners, partly through curiosity, and partly through ambition, came and joined the combatants; but, being seized with a panic, instantly fled, and spread a general terror through the army. All Caeesar's endeavours to rally his forces were in vain, the confusion was past remedy, and numbers were drowned or put to the sword in attempting to escape. 22. Now, therefore, seeing the irremediable disorder of his troops, he fled to a ship, in order to get to the palace that was just opposite; but he was no sooner on board, than such crowds entered after him, that being apprehensive of the ship's sinking, he jumped into the sea, and swam two hundred paces to the fleet which lay before the palace, all the time holding his Commentaries in his left hand above the water, and his coat of mail in his teeth. 23. The Alexandrians, finding their efforts to take the palace ineffectual, endeavoured at least to get their king out of Caesar's power, as he had seized upon his person in the beginning of their disputes. For this purpose they made use of their customary arts of dissimulation, professing the utmost desire of peace, and only wanting the presence of their lawful prince to give a sanction to the treaty. 24. Caesar was sensible of their perfidy, but concealed his suspicions, and gave them their king, as he was under no apprehensions from the abilities of a boy. Ptol'emy, however, the instant he was set at liberty, instead of promoting the peace, made every effort to give vigour to his hostilities.