In this achronism of literary history, there may, however, be discerned two periods that are separated from each other by the first invasion of the Tartars. Previous to that momentous event, Kíev formed the chief intellectual and political centre of the Russian principalities. Here the Norse traditions, which had been brought by the Varyág warriors, had not entirely faded away in the century following the introduction of Christianity, and the Court maintained certain relations with the rest of the world, as in the case of Yarosláv, who was related, by the marriage of his children, to the Courts of Norway, France, Germany and Hungary. On the other hand, Vladímir’s heroes were celebrated abroad, and Ilyá of Múrom is not unknown to German tradition and the Northern saga. Not only its favourable geographical position, but its climate as well, inspired the inhabitants of Kíev with a greater alacrity, even as the Little-Russians of to-day have developed less sombre characteristics than the Great-Russians of the sterner north. It is sufficient to compare the laconic instructions of Luká Zhidyáta in the commercial Nóvgorod with the flowery style of Serapión’s sermon, or the dry narrative of the northern chronicles with the elaborate adornment of the stories in the chronicles of Néstor and Sylvester, to become aware of the fundamental difference between the two sections of Russia. The twelfth century, rich in many aspects of literature, including that beautiful prose poem of popular origin, the _Word of Ígor’s Armament_, gave ample promise of better things to come. Similarly, the bylínas of the Vladímir cycle, the best and most numerous of all that are preserved, point to an old poetic tradition that proceeded from Kíev. The fact that these bylínas have been lately discovered in the extreme north-east, in the Government of Olónetsk, while not a trace of them has been found in their original home, has divided the scholars of Russia into two camps. Some assert that all the Russians of Kíev belonged to the Great-Russian division, and that the Tartar invasion destroyed most of them, and caused the rest to migrate to the north, whither they carried their poetry. The Little-Russians that now occupy the south of Russia are supposed by these scholars to have come from Galicia to repeople the abandoned places. The Little-Russians themselves claim, with pardonable pride, to be the direct descendants of the race that gave Russia its Néstor and the bard of the _Word of Ígor’s Armament_. There are weighty arguments on both sides, and both the Great-Russians, with whom we are at present concerned, and the Little-Russians, or Ruthenians, who have developed a literature in their own dialect, claim that old literature as their own.