In the mean time, the army of Octavius steadily continued its march across the desert from Pelusium to Alexandria. On the way, Octavius learned, through the agents in communication with him from within the city what were the arrangements which Cleopatra had made for the destruction of her treasure whenever the danger should become imminent of its falling into his hands. He was extremely unwilling that this treasure should be lost. Besides its intrinsic value, it was an object of immense importance to him to get possession of it for the purpose of carrying it to Rome as a trophy of his triumph. He accordingly sent secret messengers to Cleopatra, endeavoring to separate her from Antony, and to infuse her mind with the profession that he felt only friendship for her, and did not mean to do her any injury, being in pursuit of Antony only. These negotiations were continued from day to day while Octavius was advancing. At last the Roman army reached Alexandria, and invested it on every side. As soon as Octavius was established in his camp under the walls of the city, Antony planned a sally, and he executed it, in fact, with considerable energy and success. He issued suddenly from the gates, at the head of as strong a force as he could command, and attacked a body of Octavius's horsemen. He succeeded in driving these horsemen away from their position, but he was soon driven back in his turn, and compelled to retreat to the city, fighting as he fled, to beat back his pursuers. He was extremely elated at the success of this skirmish. He came to Cleopatra with a countenance full of animation and pleasure, took her in his arms and kissed her, all accoutered for battle as he was, and boasted greatly of the exploit which he had performed. He praised, too, in the highest terms, the valor of one of the officers who had gone out with him to the fight, and whom he had now brought to the palace to present to Cleopatra. Cleopatra rewarded the faithful captain's prowess with a magnificent suit of armor made of gold. Notwithstanding this reward, however, the man deserted Antony that very night, and went over to the enemy. Almost all of Antony's adherents were in the same state of mind. They would have gladly gone over to the camp of Octavius, if they could have found an opportunity to do so.