If we admit all possible borrowings from the West and the East, Russian folklore is still of unique interest to the student of literature on account of the evident traces of great antiquity which it has preserved. The same cause that kept the written literature of Russia at a low level and destroyed all appreciable chronology has been active in the traditional literature, and has saved it from violent transformations. It cannot be asserted that any one song has come down to us in its original shape. The change of the spoken language naturally affected the stories and songs, and many a word that has become obsolete has been superseded, or preserved in an unrecognisable form. Contemporary facts of history have been introduced in the place of older ones, as when the heroes of the cycle of Vladímir are made to fight the Tartars. Motives have become mingled by superposition of related stories, or by accretion of foreign material. But never has the people wilfully transformed, corrupted, added or taken away. Though individuals continually produced new songs and stories, yet they moved in narrowly prescribed traditional limits, and the moment these passed to the people and became its common possession, they suffered only the accidental changes just spoken of. The task of separating later and adventitious elements from the bulk of this literature has only begun, and when that is accomplished, the past of Russia will be reproduced much more clearly than that of other countries of Europe, because an achronous period separates the last two centuries from the tenth. Only one epic, the _Word of Ígor’s Armament_, has survived from antiquity. That others existed, the bard assures us when he tells of princes, for a period of a whole century, whom Boyán, an older singer, had celebrated. This precious relic is not only interesting for its intrinsic poetical merit, permitting us to guess the possibilities of the Russian untutored mind before the introduction of the repressive Byzantinism, but it serves as a guide in redating much of the oral literature of the present day. In the bylínas, the ceremonial songs, the fairy tales, we continually come upon passages that are constructed in the same manner as in the _Word_, and the popular poetry of to-day and the writings of the whole old period contain many identical phrases and illustrations.