Bocconia.—It is probable that various species of this papaveraceous genus have active medicinal properties. B. arborea Watson, of Mexico, has been found by Elliott to contain two alkaloids, one of which is probably sanguinarine; and the leaves of other species are used in South America as an abortifacient and purgative. (See Rusby, Bull. Pharm., 1891.) Murrill and Schlotterbeck (Proc. A. Ph. A., 1900, p. 128) examined all parts of Bocconia cordata, and isolated protopine, homo-chelidonine, chelerythrine and sanguinarine.