Indeed they rather suggest a Ugrian origin.
But Constantine, exhausted by the war with the Arabs, was unable to prevent the Bulgars, a tribe of Finno-Ugrian race, from crossing the Danube and settling in the district where their name still survives.
Some too amongst the medieval authorities (Ibn Haugal and Istakhri) note a resemblance between the speech in use amongst the Khazars and the Bulgarians; and the modern Magyar - a Ugrian language - can be traced back to a tribe which in the 9th century formed part of the Khazar kingdom.
The latter were indubitably the Ugrian nomads of the steppe, akin to the Tatar invaders of Europe, who filled the armies and convoyed the caravans of the ruling caste.
And finally, the researches of Aspelin (Foundations of Finno-Ugrian Archaeology,,in Finnish, and Atlas of Antiquities) led the Finnish ethnologists to direct more and more their attention to the basin of the Yenisei and the Upper Selenga.
But, while the Russians were driven from the Black Sea by the Khazars, and later on by a tide of Ugrian migration from the north-east, a stream of Sla y s moved slowly towards the north-east, down the upper Oka, into the borderland between the Finnish and Turkish regions.
Wide, and from the continent by the Yugor or Ugrian Strait, only 7 m.
Quatrefages classes them, together with the Voguls, as two families of the Ugrian sub-branch, this last, together with the Sabmes (Lapps), forming part of the Ugrian.
Nevertheless there are many points connected with the Khazars which indicate a close connexion with Ugrian or Turkish peoples.
The names of their cities can be explained only by reference to Turkish or Ugrian dialects (Klaproth, Mem.
Linguistically the Lapps belong to the Finno-Ugrian group (q.v.); the similarity of their speech to Finnish is evident though 2 Bertillon found in one instance a cephalic index of 94.
Some of the scientific societies of Helsingfors have a wide repute, such as the academy of sciences, the geographical, historical, Finno-Ugrian, biblical, medical, law, arts and forestry societies, as also societies for the spread of popular education and of arts and crafts.