in Natural History, a genus of talcs, composed of small plates in form of spangles, each plate either being very thin, or fissile into very thin ones.

Of this genus there are a great many species, called from their different colours, mica aurea, or gold-glimmer; and mica argentea, silver-glimmer, or cats-filver, &c.

BRACON, HENRY, lord chief justice of England in the reign of Henry III. was probably a native of Devonshire. He was educated at Oxford, where he took the degree of doctor of laws, and was made one of the itinerant judges about the year 1244. Ten years after he became chief justice, and had the earl of Derby's house in London assigned him for his town residence, during the minority of that nobleman. He is said to have filled this important office with singular reputation during 20 years. When he died is not known; probably it was in the reign of Edward I. He wrote De legibus et consuetudinibus Anglie, which is one of the most ancient, and also most methodical books on our laws. His method is copied from Justinian. This work was printed at London in 1569, folio; and in 1640, 4to. The first is very incorrect.