YTTRIUM (Nee-Lat., from in Swe den). A metallic element contained in the min eral gadolinite and first pronounced to be a new earth by Gadolin in 1794. It is found with other cerium metals• as a silicate, in gadolinite and allanite, and as a fluoride in yttoeerite. The metal was obtained by Berzelius as an impure powder by reducing the chloride with potassium. Yttrium (symbol. V: atomic weight. .89.02) is a dark gray powder that assumes the lustre and color of metallic iron when burnished. It Mal. bines with oxygen to form a sesquioxide, which is a yellowish-white powder.
YU, or TA YU, tii y?T) (d. B.c. 2197). The third of the 'ancient kings' so much lauded by Confucius for their virtue and their benign rule—the others being Ian (q.v.) and Shun. Ile was a native of Sze-anon, a reputed descend ant of Ilwangt i, and son of that Kim, Minister of Public Works under Van, who had struggled unsuccessfully for nine years with the great inundation which occurred in that reign. Com missioned by Shun. Vao's successor. to take up his father's unfinished work, Vii set out four days after his marriage, and for thirteen years never rested in his task, traversing the hills, surveying the nine provinces, open ing up enrays for the imprisoned waters, noting the soil and productions, and fixing the form of the tax contribution of the different lo calities. Thrice he passed his own door without
stopping, though he heard the wailing of his infant son within. In n.c. 2278 he announced the completion of his labors, and received the Principality of Ilia (or Ilsia) as his reward. In B.C. 2224 he became the colleague and suc cessor of Shun, and in 2205, after three years' mourning for his colleague, he founded the Ilia (or lisle), the first of the twenty-five dynasties of China. The greatest of the engineering feats attributed to YR is the opening of the great gorge or defile on the Yang-tse through the Wu Mountains above I-Chang (q.v.). See the Tribute of Id in vol. iii. of Legge's Chinese ()tussles (London and llong Kong. 1865),