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Magic Copying Paper

To make black paper, take lamp-black mixed with cold lard. Red paper - Venetian red mixed with lard. Blue paper-Prussian blue mixed with lard. Green paper-chrome green mixed with lard. The above ingredients to be mixed to the consistency of thick paste, and applied to the paper with a rag. Then take a flannel rag, and rub until all the color ceases coming off. These sheets, alternated be made waterproof dipped into it, passed with writing paper and written on with a between rollers, and dried; or, without the use solid pen, produce 2 or 3 copies of a letter at of rollers, the paper may be suspended until once. it has perfectly dripped, and then dried. The 1949. Manifold Copying Process. alum, soap, glue, and gum, form a kind of This is a method patented by Mr. Underwood, artificial leather, which protects the surface of London, for taking copies of writing by of the paper from the action of water, and also renders it somewhat fireproof. A second immersion makes it still better. pressure; by this means as many as twenty copies or more of a letter or other writing can be obtained.