PEARL

n. A.-S.. p. Pu6rl. Gr., fi.dpya.pov, /uap-yap i'riis. Lat., margarita. Fr., perle. Ger., Perle. 1. A shelly concretion found in molluscs, especially in p. oysters and river mu els, generally made by accretion over some foreign particle. When of a fine round form and brilliant lustre, p's are ranked as jewels with the precious stones, [a, 38.] 2. See Medicinal p. Epithelial p's. Globules formed in the epithelial tubes in epitheliomata by the union of groups of cells. [Billrpth (o, 29).] Medicinal p. Fr., perle gelatine use. Ger.. franzosische Perle. 1. A small capsule made of gelatin mixed with gum arabic, sugar, and honey, intended for the administration of a volatile liquid like ether. 2. A capsule made of very thin glacs containing a liquid, such as amyl nitrite, which is intended for inhalation. The p. is broken in a handkerchief, and the escaping vapor inhaled. |B.] P'ash, P.-asli. An impure pota ium carbonate obtained by calcination from wood ashes. [B.] P. -disease. Ger., Perlsucht. See Bovine TUBERCULOSIS. P. -plant. See LITHOSPERMUM of ficin ale. [s. 225]