[Sidenote: Prester John.] [Sidenote: The "Arimaspians."] Here was altogether too much geographical knowledge for European ignorance in those days to digest. While Marco's book attracted much attention, its influence upon the progress of geography was slighter than it would have been if addressed to a more enlightened public. Many of its sober statements of fact were received with incredulity. Many of the places described were indistinguishable, in European imagination, from the general multitude of fictitious countries mentioned in fairy-tales or in romances of chivalry. Perhaps no part of Marco's story was so likely to interest his readers as his references to Prester John. In the course of the twelfth century the notion had somehow gained possession of the European mind that somewhere out in the dim vastness of the Orient there dwelt a mighty Christian potentate, known as John the Presbyter or "Prester."[333] At different times he was identified with various known Asiatic sovereigns. Marco Polo identified him with one Togrul Wang, who was overcome and slain by the mighty Jenghis; but he would not stay dead, any more than the grewsome warlock in Russian nursery lore. The notion of Prester John and his wealthy kingdom could no more be expelled from the European mind in the fourteenth and fifteenth centuries than the kindred notion of El Dorado in the sixteenth. The position of this kingdom was shifted about here and there, as far as from Chinese Tartary to Abyssinia and back again, but somewhere or other in people's vague mental picture of the East it was sure to occur. Other remote regions in Asia were peopled with elves and griffins and "one-eyed Arimaspians,"[334] and we may be sure that to Marco's readers these beings were quite as real as the polished citizens of Cambaluc (Peking) or the cannibals of the Andaman islands. From such a chaos of ideas sound geographical knowledge must needs be a slow evolution, and Marco Polo's acquisitions were altogether too far in advance of his age to be readily assimilated. [Footnote 333: "But for to speake of riches and of stones, And men and horse, I trow the large wones Of Prestir John, ne all his tresorie, Might not unneth have boght the tenth partie." Chaucer, _The Flower and the Leaf_, 200.