In order to discuss the movements of Asiatic peoples into Europe from the first inroad of the Huns to the conquests of the Osmanli Turks in the sixteenth century, it will be necessary to review briefly the events in central and eastern Asia which preceded and precipitated these incursions. From the time that the Irano-Aryan ancestors had arrived in Russian Turkestan in anticipation of their descent into the hills of northwestern India, much of this grassy plain had been the home of those Iranians who remained behind while their kinsmen climbed the mountains which would take them into India and the Irano-Afghan plateau. These Iranians a