The Manchus are descended from a branch of certain wild Tungusic nomads, who were known in the ninth century as the Nü-chêns, a name which has been said to mean "west of the sea." The cradle of their race lay at the base of the Ever-White Mountains, due north of Korea, and was fertilised by the head waters of the Yalu River. In an illustrated Chinese work of the fourteenth century, of which the Cambridge University Library possesses the only known copy, we read that they reached this spot, originally the home of the Su-shên tribe, as fugitives from Korea; further, that careless of death and.