CALVUS (Cornelius Licinius), a celebrated Roman orator, was the friend of Catullus; and flourished 64 B. C. Catullus, Ovid, and Horace, speak of him.

CALX properly signifies 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: for a full explication of this phenomenon, see the article FIRE.