35. SANDARACCA.—SANDARAC. A resin exuding spontaneously from the bark of a North African evergreen tree, Calli'tris quadrival'vis Ventenat. Small rounded masses about the size of a pea, of a yellowish color; it resembles mastic somewhat, and is often substituted for it on account of its lower price, but a simple means of distinction is afforded in its becoming pulverulent (not adhesive) when chewed. It was formerly used as a mild stimulant in ointments and plasters, but is now mostly used for varnishes. Its powder is used as a pounce to prevent ink from spreading on paper or cloth.