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. ^37 But the feeble Arsaces Tiranus, ^38 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 praefect Ablavius; and the alliance of a female, who had been educated as the destined wife of the emperor Constans, exalted the dignity of a Barbarian king. ^39 Tiranus professed the Christian religion; he reigned over a nation of Christians; and he was restrained, by every principle of conscience and interest, from contributing to the victory, which would consummate the ruin of the church. The alienated mind of Tiranus was exasperated by the indiscretion of Julian, who treated the king of Armenia as his slave, and as the enemy of the gods. The haughty and threatening style of the Imperial mandates ^40 awakened the secret indignation of a prince, who, in the humiliating state of dependence, was still conscious of his royal descent from the Arsacides, the lords of the East, and the rivals of the Roman power. ^!
[Footnote *: Or Bambyce, now Bambouch; Manbedj Arab., or Maboug, Syr. It was twenty-four Roman miles from the Euphrates. - M.]
[Footnote 34: I take the earliest opportunity of acknowledging my obligations to M. d'Anville, for his recent geography of the Euphrates and Tigris, (Paris, 1780, in 4to.,) which particularly illustrates the expedition of Julian.]
[Footnote 35: There are three passages within a few miles of each other; 1. Zeugma, celebrated by the ancients; 2. Bir, frequented by the moderns; and, 3. The bridge of Menbigz, or Hierapolis, at the distance of four parasangs from the city.]
[Footnote *: Djisr Manbedj is the same with the ancient Zeugma. St. Martin, iii. 58 - M.]
[Footnote 36: Haran, or Carrhae, was the ancient residence of the Sabaeans, and of Abraham. See the Index Geographicus of Schultens, (ad calcem Vit. Saladin.,) a work from which I have obtained much Oriental knowledge concerning the ancient and modern geography of Syria and the adjacent countries.]
[Footnote *: On an inedited medal in the collection of the late M. Tochon. of the Academy of Inscriptions, it is read Xappan. St. Martin. iii 60 - M.]
[Footnote 37: See Xenophon. Cyropaed. l. iii. p. 189, edit. Hutchinson. Artavasdes might have supplied Marc Antony with 16,000 horse, armed and disciplined after the Parthian manner, (Plutarch, in M. Antonio. tom. v. p. 117.)]
[Footnote 38: Moses of Chorene (Hist. Armeniac. l. iii. c. 11, p. 242) fixes his accession (A. D. 354) to the 17th year of Constantius.]
[Footnote *: Arsaces Tiranus, or Diran, had ceased to reign twenty- five years before, in 337. The