Khorasan to the Perso-Afghan border, its western limit being indicated by a long line to the northwest from near Shiraz, taking in the whole upper country to the Russian frontier and the Elburz; (2) the provinces south and south-west of the Caspian; (3) a narrow strip of wooded country south-west of the Zagros range, from the Diyala River in Turkey in Asia to Shiraz; (4) the Persian side of the Shatt-el-Arab, and Aralictan, east of the Tigris; and (5) the shores of the Persian Gulf and Baluchistan.
Including the oak-forests of Shiraz with the wooded slopes of the Zagros, he found in his third division that, however little known was the tract, it appeared to contain, like the second, a Palaearctic fauna with a few peculiar species.
In the chains of Zagros we find, in Babylonian and Assyrian times, no trace of Iranians; but partly Semitic peoplesthe Gutaeans, Lulubaeans, &c.partly tribes that we can refer to no known ethnological group, e.g.
From the region of the steppes the Aryans must have penetrated into the cultivable land of Eastern Iran: thence one part spread over the district of the Indus, then on again to the Ganges; another moved westward to Zagros and the borders of the Semitic world.
On the other hand, among their neighbors in Zagros and the northcorresponding to the Anariacae (Non-Aryans) of the GreeksIranian names are at best isolated phenomena.