His want of experience might require the assistance of a wise council; but the minute instructions which regulated the service of his table, and the distribution of his hours, were adapted to a youth still under the discipline of his preceptors, rather than to the situation of a prince intrusted with the conduct of an important war. If he aspired to deserve the esteem of his subjects, he was checked by the fear of displeasing his sovereign; and even the fruits of his marriage-bed were blasted by the jealous artifices of Eusebia herself, who, on this occasion alone, seems to have been unmindful of the tenderness of her sex, and the generosity of her character. The memory of his father and of his brothers reminded Julian of his own danger, and his apprehensions were increased by the recent and unworthy fate of Sylvanus. In the summer which preceded his own elevation, that general had been chosen to deliver Gaul from the tyranny of the Barbarians; but Sylvanus soon discovered that he had left his most dangerous enemies in the Imperial court. A dexterous informer, countenanced by several of the principal ministers, procured from him some recommendatory letters; and erasing the whole of the contents, except the signature, filled up the vacant parchment with matters of high and treasonable import. By the industry and courage of his friends, the fraud was however detected, and in a great council of the civil and military officers, held in the presence of the emperor himself, the innocence of Sylvanus was publicly acknowledged. But the discovery came too late; the report of the calumny, and the hasty seizure of his estate, had already provoked the indignant chief to the rebellion of which he was so unjustly accused. He assumed the purple at his head-quarters of Cologne, and his active powers appeared to menace Italy with an invasion, and Milan with a siege. In this emergency, Ursicinus, a general of equal rank, regained, by an act of treachery, the favor which he had lost by his eminent services in the East. Exasperated, as he might speciously allege, by the injuries of a similar nature, he hastened with a few followers to join the standard, and to betray the confidence, of his too credulous friend. After a reign of only twenty-eight days, Sylvanus was assassinated: the soldiers who, without any criminal intention, had blindly followed the example of their leader, immediately returned to their allegiance; and the flatterers of Constantius celebrated the wisdom and felicity of the monarch who had extinguished a civil war without the hazard of a battle.

The protection of the Rhætian frontier, and the persecution of the Catholic church, detained Constantius in Italy above eighteen months after the departure of Julian. Before the emperor returned into the East, he indulged his pride and curiosity in a visit to the ancient capital. He proceeded from Milan to Rome along the Æmilian and Flaminian ways, and as soon as he approached within forty miles of the city, the march of a prince who had never vanquished a foreign enemy, assumed the appearance of a triumphal procession. His splendid train was composed of all the ministers of luxury; but in a time of profound peace, he was encompassed by the glittering arms of the numerous squadrons of his guards and cuirassiers. Their streaming banners of silk, embossed with gold, and shaped in the form of dragons, waved round the person of the emperor. Constantius sat alone in a lofty car, resplendent with gold and precious gems; and, except when he bowed his head to pass under the gates of the cities, he affected a stately demeanor of inflexible, and, as it might seem, of insensible gravity. The severe discipline of the Persian youth had been introduced by the eunuchs into the Imperial palace; and such were the habits of patience which they had inculcated, that during a slow and sultry march, he was never seen to move his hand towards his face, or to turn his eyes either to the right or to the left. He was received by the magistrates and senate of Rome; and the emperor surveyed, with attention, the civil honors of the republic, and the consular images of the noble families. The streets were lined with an innumerable multitude. Their repeated acclamations expressed their joy at beholding, after an absence of thirty-two years, the sacred person of their sovereign, and Constantius himself expressed, with some pleasantry, he affected surprise that the human race should thus suddenly be collected on the same spot. The son of Constantine was lodged in the ancient palace of Augustus: he presided in the senate, harangued the people from the tribunal which Cicero had so often ascended, assisted with unusual courtesy at the games of the Circus, and accepted the crowns of gold, as well as the Panegyrics which had been prepared for the ceremony by the deputies of the principal cities. His short visit of thirty days was employed in viewing the monuments of art and power which were scattered over the seven hills and the interjacent valleys. He admired the awful majesty of the Capitol, the vast extent of the baths of Caracalla and Diocletian, the severe simplicity of the Pantheon, the massy greatness of the amphitheatre of Titus, the elegant architecture of the theatre of Pompey and the Temple of Peace, and, above all, the stately structure of the Forum and column of Trajan; acknowledging