ignifies lime, but is also used by chemists and physicians for a fine powder remaining after the calcination or corrosion of metals and other mineral substances. All metallic calces, at least all those made by fire, are found to weigh more than the metal from which they were originally produced. See the article Fire.

CALX Nativa, in natural history, a kind of marly earth, of a dead whitish colour, which, if thrown into water, makes a considerable bubbling and hissing noise, and has, without previous burning, the quality of making a cement like lime or plaster of Paris.

CALX Viva, or Quick-lime, that whereon no water has been cast, in contradiction to lime which has been flaked by pouring water on it.