The entire motif of the Mimac Demonology is, to my mind, that of early conflicts with some formidable races. It is to be hoped that travellers will pay more attention to this unique race before it has ceased to exist. The Chinese theory of genii is almost exactly that of the Mimacs. The Chinese genii are now small as a moth, now fill the world; can assume any form; they command demons; they never die, but, at the end of some centuries, ride to heaven on a dragon's back. [125] Ordinarily the Chinese genii use the yellow heron as an aerial courser. The Mimacs believe in a large præternatural water-bird, Culloo, which devours ordinary people, but bears on its back those who can tame it by magic. Mr. Mayers, in his 'Chinese Reader's Manual,' suggests that the designation of Formosa as 'Isles of the Genii' (San Shén Shan) by the Chinese, has some reference to their early attempts at colonisation in Japan. Su Fuh, a necromancer, who lived B.C. 219, is said to have announced their discovery, and at the head of a troop of young men and maidens, voyaged with an expedition towards them, but, when within sight of the magic islands, were driven back by contrary winds. Gog and Magog stand in London Guildhall, though much diminished in stature, to suit the English muscles that had to bear them in processions, monuments of the præternatural size attributed to the enemies which the Aryan race encountered in its great westward migrations. Even to-day, when the progress of civilisation is harassed by untamed Scythian hordes, how strangely fall upon our ears the ancient legends and prophecies concerning them! Thus saith the Lord Jehovah: Behold I am against thee, O Gog, Prince of Rosh, of Meshech, and of Tubul: And I will turn thee back, and leave but the sixth part of thee; And I will cause thee to come up from the north parts, And will bring thee upon the mountains of Israel: And I will smite thy bow out of thy left hand, And will cause thine arrows to fall from thy right hand. Thou shalt fall upon the mountains of Israel, Thou and all thy bands. [126] In the Koran it is related of Dhulkarnein:--'He journeyed from south to north until he came between the two mountains, beneath which he found a people who could scarce understand what was said. And they said, O Dhulkarnein, verily Gog and Magog waste the land; shall we, therefore, pay thee tribute, on condition that thou build a rampart between us and them? He answered, The power wherewith my Lord hath strengthened me is better than your tribute; but assist me strenuously and I will set a strong wall between you and them.... Wherefore when this wall was finished, Gog and Magog could not scale it, neither could they dig through it. And Dhulkarnein said, This is a mercy from my Lord; but when the prediction of my Lord shall come to be fulfilled, he will reduce the wall to dust.'