Colored cylinders used for drawing npon paper; they are usually made of a fine pipeclay, colored with metallic pigments or carmine. Crayons containing plumbago are styled solid lead pencils. Crayons, Lithographic.—Various formula have been given for the formation of these crayons. One of these prescribes, white wax four parts; hard tallow soap, shellac, of each two parts; lamp black one part. Another is, dried tallow soap and white wax, each six parts; lamp black one part. This mixture being fused with a gentle heat, is to be cast into moulds for forming crayons of a proper size.