Brasses, Britannia Metals, Tins, Coppers, etc, arc cleaned with a mixture of rotten-stone, soft-soap, and oil of turpentine, mixed to the consistency of stiff putty. The stone should be powdered very fine and sifted; and a quantity of the mixture may be made sufficient to last for along while. The articles should first he washed with hot water, to remove grease. Then a little of the above mixture, mixed -with water, should be rubbed over the metal: then rub off briskly, with dry clean rag or leather and a beautiful polish will be obtained.