yline, powdered camphor, and nitric ether.
When gun-cotton or pyroxyline is heated with powdered gum-camphor it is dissolved, and this material, under the name of celluloid, is extensively used as a substitute for hard rubber for combs, billiard-balls, dominos, knife-handles, dental plates, truss-pads, coating metallic articles, and for the manufacture of imitation coral, ivory, tortoise-shell, horn, and the like.
See the following United States patents:—
89,582.Hyatt & Blake.1869.
91,341.Hyatt & Blake1869.