At present the heterogeneous populations of the Tarim basin (Kashgaria, Eastern Turkestan), where the various elements have been intermingled, offer a striking contrast to those of the Ili valley (Sungaria), where one invading horde has succeeded and been superimposed on another. Hence the complexity of the Kashgarian type, in which the original "horse-like face" everywhere crops out, absorbing the later Mongolo-Turki arrivals. But in Sungaria the Kalmuk, Chinese, Dungan, Taranchi, and Kirghiz groups are all still sharply distinguished and perceptible at a glance. "Amongst the Kashgarians--a term as vague ethnically as 'Aryan'--Richthofen has determined the successive presence of the Su, Yue-chi, and Usun hordes, as described in the early Chinese chronicles[697]." The recent explorations of M. A. Stein have thrown some light on the ethnology of this region, and a preliminary survey of results was prepared and published by T. A. Joyce. He concludes that the original inhabitants were of Alpine type, with, in the west, traces of the Indo-Afghan, and that the Mongolian has had very little influence upon the population[698]. In close proximity to the Toghuz-Uigurs dwelt the _Oghuz_ (_Ghuz, Uz_), for whom eponymous heroes have been provided in the legendary records of the Eastern Turks, although all these terms would appear to be merely shortened forms of Toghuz[699]. But whether true Uigurs, or a distinct branch of the Turki people, the Ghuz, as they are commonly called by the Arab writers, began their westward migrations about the year 780. After occupying Transoxiana, where they are now represented by the Uzbegs[700] of Bokhara and surrounding lands, they gradually spread as conquerors over all the northern parts of Irania, Asia Minor, Syria, the Russian and Caucasian steppes, Ukrainia, Dacia, and the Balkan Peninsula. In most of these lands they formed fresh ethnical combinations both with the Caucasic aborigines, and with many kindred Turki as well as Mongol peoples, some of whom were settled in these regions since neolithic times, while others had either accompanied Attila's expeditions, or followed in his wake (Pechenegs, Komans, Alans, Kipchaks, Kara-Kalpaks), or else arrived later in company with Jenghiz-Khan and his successors (Kazan and Nogai "Tatars"[701]).