While the emperor and his court enjoyed, with sullen pride, the security of the marshes and fortifications of Ravenna, they abandoned Rome, almost without defence, to the resentment of Alaric. Yet such was the moderation which he still preserved, or affected, that, as he moved with his army along the Flaminian way, he successively despatched the bishops of the towns of Italy to reiterate his offers of peace, and to conjure the emperor, that he would save the city and its inhabitants from hostile fire, and the sword of the Barbarians. These impending calamities were, however, averted, not indeed by the wisdom of Honorius, but by the prudence or humanity of the Gothic king; who employed a milder, though not less effectual, method of conquest. Instead of assaulting the capital, he successfully directed his efforts against the Port of Ostia, one of the boldest and most stupendous works of Roman magnificence. The accidents to which the precarious subsistence of the city was continually exposed in a winter navigation, and an open road, had suggested to the genius of the first Cæsar the useful design, which was executed under the reign of Claudius. The artificial moles, which formed the narrow entrance, advanced far into the sea, and firmly repelled the fury of the waves, while the largest vessels securely rode at anchor within three deep and capacious basins, which received the northern branch of the Tyber, about two miles from the ancient colony of Ostia. The Roman Port insensibly swelled to the size of an episcopal city, where the corn of Africa was deposited in spacious granaries for the use of the capital. As soon as Alaric was in possession of that important place, he summoned the city to surrender at discretion; and his demands were enforced by the positive declaration, that a refusal, or even a delay, should be instantly followed by the destruction of the magazines, on which the life of the Roman people depended. The clamors of that people, and the terror of famine, subdued the pride of the senate; they listened, without reluctance, to the proposal of placing a new emperor on the throne of the unworthy Honorius; and the suffrage of the Gothic conqueror bestowed the purple on Attalus, præfect of the city. The grateful monarch immediately acknowledged his protector as master-general of the armies of the West; Adolphus, with the rank of count of the domestics, obtained the custody of the person of Attalus; and the two hostile nations seemed to be united in the closest bands of friendship and alliance.