The New Copper Paint.

Scientific American 14, 4.4.1863

J. Nickles, the Paris correspondent of Silliman's Journal, states that M. Audry, who has been so successful in electro-plating with copper the cast-iron monumental fountains in the Place de la Concorde, makes his new copper paint from the porous copper deposited by the galvanic battery, mixed with a varnish. The solvent of his varnish is the light and refined petroleum, or what we call benzine. The copper is very pure and is easily pulverized, then it is mixed with the benzine varnish, and applied either to iron, brass, plaster, or wood. When this copper is mixed with oils, it acquires a green antique hue.