CRYSTALLIZED TIN.
Mix half an ounce of nitric acid, six drams of muriatic acid, and two ounces of water; pour the mixture upon a piece of tin plate previously made hot, and, after washing it in the mixture, it will bear a beautiful crystalline surface, in feathery forms. This is the celebrated moirée metallique, and, when varnished, is made into ornamental boxes, &c. The figures will vary according to the degree of heat previously given to the metal.