in chemistry, a name given to almost all precipitates. Thus, magistery and precipitate are synonymous; but lately, chemists have used chiefly the term precipitate, and applied that of magistery to some particular precipitates only, which are used in medicine and in the arts. Such are, the magisteries of bismuth, coal, crabs' eyes, sulphur, &c.

Magistery of Bismuth. See Chemistry, no 209.