His last resource was an attempt to seduce the loyalty of the besiegers. He scattered libels through the camp, inviting the troops to desert an unworthy master, who sacrificed the public happiness to his luxury, and the lives of his most valuable subjects to the slightest suspicions. The arts of Aureolus diffused fears and discontent among the principal officers of his rival. A conspiracy was formed by Heraclianus, the Prætorian præfect, by Marcian, a general of rank and reputation, and by Cecrops, who commanded a numerous body of Dalmatian guards. The death of Gallienus was resolved; and notwithstanding their desire of first terminating the siege of Milan, the extreme danger which accompanied every moment’s delay obliged them to hasten the execution of their daring purpose. At a late hour of the night, but while the emperor still protracted the pleasures of the table, an alarm was suddenly given, that Aureolus, at the head of all his forces, had made a desperate sally from the town; Gallienus, who was never deficient in personal bravery, started from his silken couch, and without allowing himself time either to put on his armor, or to assemble his guards, he mounted on horseback, and rode full speed towards the supposed place of the attack. Encompassed by his declared or concealed enemies, he soon, amidst the nocturnal tumult, received a mortal dart from an uncertain hand. Before he expired, a patriotic sentiment rising in the mind of Gallienus, induced him to name a deserving successor; and it was his last request, that the Imperial ornaments should be delivered to Claudius, who then commanded a detached army in the neighborhood of Pavia. The report at least was diligently propagated, and the order cheerfully obeyed by the conspirators, who had already agreed to place Claudius on the throne. On the first news of the emperor’s death, the troops expressed some suspicion and resentment, till the one was removed, and the other assuaged, by a donative of twenty pieces of gold to each soldier. They then ratified the election, and acknowledged the merit of their new sovereign.