of Julian; but the halt of a few days was principally employed in completing the immense preparations of the Persian war. The secret of the expedition had hitherto remained in his own breast; but as Carrhæ is the point of separation of the two great roads, he could no longer conceal whether it was his design to attack the dominions of Sapor on the side of the Tigris, or on that of the Euphrates. The emperor detached an army of thirty thousand men, under the command of his kinsman Procopius, and of Sebastian, who had been duke of Egypt. They were ordered to direct their march towards Nisibis, and to secure the frontier from the desultory incursions of the enemy, before they attempted the passage of the Tigris. Their subsequent operations were left to the discretion of the generals; but Julian expected, that after wasting with fire and sword the fertile districts of Media and Adiabene, they might arrive under the walls of Ctesiphon at the same time that he himself, advancing with equal steps along the banks of the Euphrates, should besiege the capital of the Persian monarchy. The success of this well-concerted plan depended, in a great measure, on the powerful and ready assistance of the king of Armenia, who, without exposing the safety of his own dominions, might detach an army of four thousand horse, and twenty thousand foot, to the assistance of the Romans. But the feeble Arsaces Tiranus, king of Armenia, had degenerated still more shamefully than his father Chosroes, from the manly virtues of the great Tiridates; and as the pusillanimous monarch was averse to any enterprise of danger and glory, he could disguise his timid indolence by the more decent excuses of religion and gratitude. He expressed a pious attachment to the memory of Constantius, from whose hands he had received in marriage Olympias, the daughter of the præfect Ablavius; and