may be 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. The articles should first be 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.