TO DECORATE METAL.
A brilliant and varied display of colours can be made on metal by dipping the piece in a solution, heated to 212 degrees Fahrenheit, of hyposulphite of lead in hyposulphite of soda.
A brilliant and varied display of colours can be made on metal by dipping the piece in a solution, heated to 212 degrees Fahrenheit, of hyposulphite of lead in hyposulphite of soda.