(Cimolite), a species of clay much esteemed by the ancients as a cataplasm in erysipelas and other inflammations. They also used it as fuller's earth, for cleansing cloth. The ancients obtained the Cimolia Terra in several islands of the Archipelago, but particularly from Cimolus (now Argentiera or Kimoli), whence it derived its name. It is still plentiful in those islands; and the Turks, who believe in the virtues ascribed to it by the ancients, mould it into small cakes, which are stamped with the seal of the Grand Signior. Cimolite is of a soft crumbly texture; has a white or pearly-gray hue; adheres firmly to the tongue; and when thrown into water, moulders to a fine powder. These are the characters of the ancient terra cimolita. It yielded to Klaproth of silica 62, alumina 23, oxide of iron 1-25, and water 12; sp. gr. 2. It is believed to be formed by the decomposition of trachyte.