Plaster
calcined gypsum or sul- Pt.; at. wt., 194.3; sp. gr. 21.6, a tetrad phate of lime, used, when mixed with metallic element discovered first in the United States; still produced there; water, for finishing walls, for molds, also found in the Ural chain, and in ornaments, casts, luting, cement, etc.
Also a composition of lime, sand, and copper ore from the Alps. Pure forged water, with or without hair as a bond, platinum takes a high luster, is nearly and used to cover walls and ceilings. malleable. It resists the strongest heat as white as silver, and very ductile and In pharmacy, an unctuous compound, of the forge fire, but can be fused by allic oxide, and spread on linen, silk, or the electric current; is the heaviest united either to a powder or some metleather, for convenience of external application.