Zariaspa, and Pliny asserts that at any rate in earlier times it was called by that name. In Arrian Zariaspa is the largest city of Bactria, while Ptolemy places Zariaspa to the north of Bactra, on the bank of the Oxus. Zariaspa means golden horse. A river might possibly be known by such a name, but hardly a city, unless it belonged to a tribe of the name of Zariaspians, and was inhabited by them. In fact Ptolemy places the tribe of the Zariaspians in his Zariaspa.[15]

The air on these north-western terraces of the Hindu Kush is warm, and the soil sufficiently vigorous, under irrigation, to produce rice and southern fruits. Eight leagues below the snow-fields of the mountains, which resist even the hottest months of the year, two good leagues to the north of the place where the Dehas, after forcing a passage through the last heights, reaches the plains, lies the city of Balkh, on the banks of that river. At this day it is a town only partially inhabited; but the ruins of the ancient city are said to cover a circuit of several leagues. The adjacent soil is now well cultivated; the fields are thickly planted with trees, and beside old water-courses, now dried up, and extensive ruins of yet older aqueducts, eighteen channels still convey their rills to fields under active cultivation.[16]

North of the Bactrians, beyond the Oxus, on the western slope of Belurdagh, in the valley of the Polytimetus (Zarefshan, i. e. strewing gold), which flows towards the Oxus from the east, but, instead of joining it, ends in Lake Dengiz, lay the Sogdiani of the Greeks, the Suguda of the Old Persian inscriptions, and Çughdha of the Avesta, in the region of the modern Sogd. As the Oxus in its upper course separates the Bactrians from the Sogdiani, the Jaxartes, further to the north, separates the latter from the Scyths. According to Strabo, the manners of the Bactrians and Sogdiani were similar, but the Bactrians were less rude.[17] Maracanda (Samarcand), the chief city of the Sogdiani, on the Polytimetus, is said to have had a circuit of 70 stades in the fourth century B.C. The soil is not without fertility, but the climate varies between great heat and severe cold.

Herodotus observes that the Bactrians, who carried bows of reed and short lances, closely resembled the northern Indians in armour, clothing, and mode of life, and then informs us that the Areians, Parthians, Sogdiani, and Chorasmians resembled the Bactrians. All these tribes of the east, according to the account of Herodotus, carried the Indian bow of reed; the Areians alone used the Median bow, which Herodotus states to have been in vogue not only among the Medes, but also among all the nations of Western Iran. He adds that in ancient times the Medes were called Areians by all men. Strabo uses the name Ariana for the land of all the nations of Iran, except that of the Medes and Persians, i. e. for the whole eastern half of Iran.[18] In Diodorus also the nations of Eastern Iran are Arians.[19] The Avesta, which, as we shall show, belongs to the east of Iran, calls its native land Airyao Dahvyu, i. e. abode of the Airyas; or Airyao Danhavo, i. e. land of the Airyas, in contrast to the Anairyao Danhavo, i. e. the non-Arian lands.[20] In his inscriptions king Darius styles himself "a Persian, son of a Persian, an Arian (ariya) of an Arian tribe,"[21] and therefore the name must have held good of the west of Iran also, and have included all the nations of Iran, though afterwards it continued in use more especially for the tribes of the east. The inhabitants of the modern Persian kingdom call their kingdom by the general name of Iran. Iran is only the regular new Persian form of the old name, which in the west was pronounced Ariyana, and in the east Airyana.

We remember that the ruling nation of India called themselves Arya, and this name compared with Airya and Ariya shows us that the nations of Iran assumed the same title with very little difference. Among the Greeks Ariya and Airya became Areioi and Arioi, and the name of the land, Ariyana and Airyana, became Ariana. We have learnt the meaning of the names Aryas, Ariyas, Airyas; they signify "the noble or ruling people" (IV. 8). Much the same is the sense of the name Artæans,[22] which, according to the assertion of Herodotus, was the title by which the Persians called themselves; it signifies "the exalted," or "mighty." The Persians may have assumed it after they became the ruling people in Iran and Hither Asia.

These distinctions show us that the Aryas whom we found on the Indus and in the Panjab, and who forced their way from thence to the conquest and colonisation of the valley of the Ganges, and then extended their dominion over the Deccan, and imported their religion and their civilisation into those wide regions, were closely connected with the group of nations which occupied the table-land of Iran. It is obvious that this relationship was most strictly maintained and most strongly marked where the intercourse between the neighbouring nations was most lively, i. e. among the nations of Eastern Iran. The conclusion drawn from the common title of the two nations on the west and east of the Indus, and from the statements of Herodotus about the manners of the eastern and the name of the western nations of Iran, is confirmed by the examination of the existing remnants of the ancient languages of Iran, whether spoken in the east or the west. This evidence derived from the names and the language is confirmed yet further by the coincidence in certain traits of religion and worship.

We are not in a position to fix the place from which and the time when the Arian tribes entered the table-land of Iran and peopled it. That Iran was not their native country is clear from the divergence of the Arian stock from the common stem of the Indo-Europeans (IV. 4). Still less can we decide whether the Arians found an older population already settled in Iran. So far as the ancient monuments of east and west allow us to form an opinion, there exist no elements of an alien language from which we could deduce the existence of an earlier population, which the Arians conquered. Yet we cannot deny that tribes of an alien origin and character were settled on the western spurs of the mountain wall of Iran, in the