flesh and milk of their cattle. The Chalybians Ref. 132 derived their name and temper from the iron quality of the soil; and, since the days of Cyrus, they might produce, under the various appellations of Chaldæans and Zanians, an uninterrupted prescription of war and rapine. Under the reign of Justinian, they acknowledged the God and the emperor of the Romans, and seven fortresses were built in the most accessible passes, to exclude the ambition of the Persian monarch. Ref. 133 The principal source of the Euphrates descends from the Chalybian mountains, and seems to flow towards the west and the Euxine; bending to the south-west, the river passes under the walls of Satala and Melitene (which were restored by Justinian as the bulwarks of the lesser Armenia), and gradually approaches the Mediterranean sea; till at length, repelled by Mount Taurus, Ref. 134 the Euphrates inclines his long and flexible course to the south-east and the gulf of Persia. Among the Roman cities beyond the Euphrates, we distinguish two recent foundations, which were named from Theodosius and the relics of the Martyrs; and two capitals, Amida and Edessa, which are celebrated in the history of every age. Their strength was proportioned by Justinian to the danger of their situation. A ditch and palisade might be sufficient to resist the artless force of the cavalry of Scythia; but more elaborate works were required to sustain a regular siege against the arms and treasures of the great king. His skilful engineers understood the methods of conducting deep mines, and of raising platforms to the level of the rampart; he shook the strongest battlements with his military engines, and sometimes advanced to the assault with a line of moveable turrets on the backs of elephants. In the great cities of the East, the disadvantage of space, perhaps of position, was compensated by the zeal of the people, who seconded the garrison in the defence of their country and religion; and the fabulous promise of the Son of God, that Edessa should never be taken, filled the citizens with valiant confidence, and chilled the besiegers with doubt and dismay. Ref. 135 The subordinate towns of Armenia and Mesopotamia were diligently strengthened, and the posts which appeared to have any command of ground or water were occupied by numerous forts, substantially built of stone, or more hastily erected with the obvious materials of earth and brick. The eye of Justinian investigated every spot; and his cruel precautions might attract the war into some lonely vale, whose peaceful natives, connected by trade and marriage, were ignorant of national discord and the quarrels of princes. Westward of the Euphrates, a sandy desert extends above six hundred miles to the Red Sea. Nature had interposed a vacant solitude between the ambition of two rival empires; the Arabians, till Mahomet arose, were formidable only as robbers; and, in the proud security of peace, the fortifications of Syria were neglected on the most vulnerable side.
But the national enmity, at least the effects of that enmity, had been suspended by a truce, which continued above four-score years. An ambassador from the emperor Zeno accompanied the rash and unfortunate Perozes, in his expedition against the Nepthalites or white Huns, whose conquests had been stretched from the Caspian to the heart of India, whose throne was enriched with emeralds, Ref. 136 and whose cavalry was supported by a line of two thousand elephants. Ref. 137 The Persians were twice circumvented, in a situation which made valour useless and flight impossible; and the double victory of the Huns was achieved by military stratagem. They dismissed their royal captive after he had submitted to adore the majesty of a Barbarian; and the humiliation was poorly evaded by the casuistical subtilty of the Magi, who instructed Perozes to direct his attention to the rising sun. The indignant successor of Cyrus forgot his danger and his gratitude: he renewed the attack with headstrong fury, and lost both his army and his life. Ref. 138 The death of Perozes abandoned Persia to her foreign and domestic enemies; and twelve years of confusion elapsed before his son Cabades or Kobad could embrace any designs of ambition or revenge. The unkind parsimony of Anastasius was the motive or pretence of a Roman war; Ref. 139 the Huns and Arabs marched under the Persian standard; and the fortifications of Armenia and Mesopotamia were at that time in a ruinous or imperfect condition. The emperor returned his thanks to the governor and people of Martyropolis for the prompt surrender of a city which could not be successfully defended, and the conflagration of Theodosiopolis might justify the conduct of their prudent neighbours. Amida sustained a long and destructive siege: at the end of three months the loss of fifty thousand of the soldiers of Cabades was not balanced by any prospect of success, and it was in vain that the Magi deduced a flattering prediction from the indecency of the women on the ramparts, who had revealed their most secret charms to the eyes of the assailants. At length, in a silent night, they ascended the most accessible tower, which was guarded only by some monks, oppressed; after the duties of a festival, with sleep and wine. Scaling-ladders were applied at the dawn of day; the presence of Cabades, his stern command, and his drawn sword compelled the Persians to vanquish; and, before it was sheathed, fourscore thousand of the inhabitants had expiated the blood of their companions. After the siege of Amida, the war continued three years, and the unhappy frontier tasted the full measure of its calamities. The gold of Anastasius was offered too late; the number of his troops was defeated by the number of their generals; the country was stripped of its inhabitants; and both the living and the dead were abandoned to the wild beasts of the desert. The resistance of Edessa, and the deficiency of spoil, inclined the mind of Cabades to peace; he sold his conquests for an exorbitant price; and the same line, though marked with slaughter and devastation, still separated the two empires. To avert the repetition of the same evils, Anastasius resolved to form a new colony, so strong that it should defy the power of the Persian, so far advanced towards Assyria that its stationary troops might defend the province by the menace or operation of offensive war. For this purpose, the town of Dara, Ref. 140 fourteen miles from Nisibis, and four days’ journey from the Tigris, was peopled and adorned; the hasty works of Anastasius were improved by the perseverance of Justinian; and, without insisting on places less important, the fortifications of Dara may represent the military architecture of the age. The city was surrounded with two walls, and the interval between them, of fifty paces, afforded a retreat to the cattle of the besieged. The inner wall was a monument of strength and beauty: it measured sixty feet from the ground, and the height of the towers was one hundred feet; the loop-holes, from whence an enemy might be annoyed with missile weapons, were small, but numerous; the soldiers were planted along the rampart, under the shelter of double galleries; and a third platform, spacious and secure, was raised on the summit of the towers. The exterior wall appears to have been less lofty, but more solid; and each tower was protected by a quadrangular bulwark. A hard rocky soil resisted the tools of the miners, and on the south-east, where the ground was more tractable, their approach was retarded by a new work, which advanced in the shape of an half-moon. The double and treble ditches were filled with a stream of water; and in the management of the river the most skilful labour was employed to supply the inhabitants, to distress the besiegers, and to prevent the mischiefs of a natural or artificial inundation. Dara continued more than sixty years to fulfil the wishes of its founders, and to provoke the jealousy of the Persians, who incessantly complained that this impregnable fortress had been constructed in manifest violation of the treaty of peace between the two empires.
Between the Euxine and the Caspian, the countries of Colchos, Iberia, and Albania are intersected in every direction by the branches of Mount Caucasus; and the two principal gates or passes from north to south have been frequently confounded in the geography both of the ancients and moderns. The name of Caspian or Albanian gates is properly applied to Derbend, Ref. 141 which occupies a short declivity between the mountains and the sea; the city, if we give credit to local tradition, had been founded by the Greeks; and this dangerous entrance was fortified by the kings of Persia with a mole, double walls, and doors of iron. The Iberian gates Ref. 142 are formed by a narrow passage of six miles in Mount Caucasus, which opens from the northern side of Iberia or Georgia into the plain that reaches to the Tanais and the Volga. A fortress, designed by Alexander, perhaps, or one of his successors, to command that important pass, had descended by right of conquest or inheritance to a prince of the Huns, who offered it for a moderate price to the emperor; but, while Anastasius paused, while he timorously computed the cost and the distance, a more vigilant rival interposed, and Cabades forcibly occupied the straits of Caucasus. The Albanian and Iberian gates excluded the horsemen of Scythia from the shortest and most practicable roads, and the whole front of the mountains was covered by the rampart of Gog and Magog, the long wall which has excited the curiosity of an Arabian caliph Ref. 143 and a
