261. COPAL.—GUM COPAL. A resin found as a fossil in Zanzibar, or exuding from various species and genera of trees of the natural order Leguminosae, (...and Burseraceae - MM) growing in South America, West Indies, and Africa. Yellowish or brownish, irregular masses, often with a wrinkled surface; breaks with a glossy conchoidal fracture; odorless and tasteless. Used in making varnishes.
A Manual of Organic Materia Medica and Pharmacognosy, 1917, was written by Lucius E. Sayre, B.S. Ph. M.