alongside of the Greek.

Indo-Scythians.Then one nation more entered into the arena; the Scythians, or, as they were called in Iran and India, the Sacae, broke off from their ancestral settlements on the Jaxartes and crossed the mountains southward. The Bactrian province came at least in great part into their power, and at some time in the last century of the Roman republic they must have established themselves in the modern Afghanistan and Beloochistan. On that account in the early imperial period the coast on both sides of the mouth of the Indus about Minnagara is called Scythian, and in the interior the district of the Drangae lying to the west of Candahar bears subsequently the name “land of the Sacae,” Sacastane, the modern Seistân. This immigration of the Scythians into the provinces of the Bactro-Indian empire doubtless restricted and injured it, somewhat as the Roman empire was affected by the first migrations of the Germans, but did not destroy it; under Vespasian there still subsisted a probably independent Bactrian state.16

Partho-Indian empire.Under the Julian and Claudian emperors the Parthians seem to have been the leading power at the mouth of the Indus. A trustworthy reporter from the Augustan age specifies that same Sacastane among the Parthian provinces, and calls the king of the Saco-Scythians an under-king of the Arsacids; as the last Parthian province towards the east he designates Arachosia with the capital Alexandropolis, probably Candahar. Soon afterwards, indeed, in Vespasian’s time, Parthian princes rule in Minnagara. This, however, was for the empire on the river Indus more a change of dynasty than an annexation proper to the state of Ctesiphon. The Parthian prince Gondopharus, whom the Christian legend connects with St. Thomas, the apostle of the Parthians and Indians,17 certainly ruled from Minnagara as far up as Peshawur and Cabul; but these rulers use, like their superiors in the Indian empire, the Indian language alongside of the Greek, and name themselves great-kings like those of Ctesiphon; they appear to have been not the less rivals to the Arsacids, on account of their belonging to the same princely house.18

Empire of the Sacae on the Indus.This Parthian dynasty was then followed in the Indian empire after a short interval by what is designated in Indian tradition as that of the Sacae or that of king Kanerku or Kanishka, which begins with 78 A.D. and subsisted at least down to the third century.19 They belong to the Scythians, whose immigration was formerly mentioned, and on their coins the Scythian language takes the place of the Indian.20 Thus in the region of the Indus, after the Indians and the Hellenes, Parthians and Scythians bore sway in the first three centuries of our era. But even under the foreign dynasties a national Indian type of state was established and held its ground, and opposed a not less permanent barrier to the development of the Partho-Persian power in the East than did the Roman state in the West.

Asiatic Scythians.Towards the north and north-east Iran bordered with Turan. As the western and southern shores of the Caspian Sea and the upper valleys of the Oxus and Jaxartes offered an appropriate seat for civilisation, so the steppe round the Sea of Aral and the extensive plain stretching behind it belonged by right to the roving peoples. There were among those nomads probably individual tribes kindred to the Iranians; but these have no part in the Iranian civilisation, and it is this element which determines the historical position of Iran, that it forms the bulwark of the peoples of culture against those hordes, who, as Scythians, Sacae, Huns, Mongols, Turks, appear to have no other destiny in the world’s history than that of annihilating culture. Bactria, the great bulwark of Iran against Turan, sufficed for this defence during a considerable time under its Greek rulers in the epoch after Alexander; but we have already mentioned that subsequently, although it did not perish, it no longer availed to prevent the Scythians from pressing onward towards the south. With the decay of the Bactrian power the same task was transferred to the Arsacids. How far they responded to it it is difficult to say. In the first period of the empire the great-kings of Ctesiphon seem to have driven back the Scythians or to have brought them into subjection in the northern provinces as well as to the south of the Hindoo Koosh; they wrested from them again a portion of the Bactrian territory. But it is doubtful what limits were here fixed, and whether they were at all lasting. There is frequent mention of wars between the Parthians and Scythians. The latter, here in the first instance dwellers around the Sea of Aral, the forefathers of the modern Turkomans, are regularly the aggressors, inasmuch as they partly by crossing over the Caspian Sea invade the valleys of the Cyrus and the Araxes, partly issuing from their steppes pillage the rich plains of Hyrcania and the fertile oasis of Margiana (Merv). The border-regions agreed to buy off the levy of arbitrary contributions by tributes, which were regularly called up at fixed terms, just as at present the Bedouins of Syria levy the kubba from the farmers there. The Parthian government thus, at least in the earlier imperial period, was as little able as the Turkish government of the present day to secure here to the peaceful subject the fruits of his toil, and to establish a durable state of peace on the frontier. Even for the imperial power itself these border-troubles remained an open sore; often they exercised an influence on the wars of succession of the Arsacids as well as on their disputes with Rome.

The Romano-Parthian frontier regions.We have set forth in its due place how the attitude of the Parthians to the Romans came to be shaped and the boundaries of the two great powers to be established. While the Armenians had been rivals of the Parthians, and the kingdom on the Araxes set itself to play the part of great-king in anterior Asia, the Parthians had in general maintained friendly relations with the Romans as the foes of their foes. But, after the overthrow of Mithradates and Tigranes, the Romans had, particularly through the arrangements made by Pompeius, taken up a position which was hardly compatible with serious and lasting peace between the two states. In the south Syria was now under direct Roman rule, and the Roman legions kept guard on the margin of the great desert which separates the lands of the coast from the valley of the Euphrates. In the north Cappadocia and Armenia were vassal-principalities of Rome. The tribes bordering on