DRAGON'S BLOOD, a resinous substance much used for tinging spirit and turpentine varnishes, for preparing gold lacquer, staining marble, &c. It is the produce of several
trees,—as Calamus draco, Draecena draco, Pterocarpus dragonus draco, &c.; and is imported from the East Indies, Africa, and South America, in dark red lumps, in rolls, and in irregular cakes. When pulverized it is of a bright red colour. Its solvents are alcohol, ether, and oils.