To clean silver ware, with a soft brush rub on a thin paste of equal parts of levigated (not precipitated) chalk and sodium hyposulphite rubbed up with distilled water. Rinse in clean water and dry in sawdust. Or let the paste dry on the silver, then rub off and rinse in hot water. To clean silver coins, immerse the coin in a bath of 1 part of sulphuric acid and 9 parts of water. In from live to ten minutes the crust of silver sulphide will have been dissolved: then rinse in clean water, rub with a soft brush and castile soap, rinse again, dry with a soft cloth, and rub with chamois leather. Silver-plated ware may be cleaned in this way. With a soft linen rag rub on a moistened mixture of 2 parts of cream of tartar, 2 parts of levigated chalk, and 1 part of alum, all in dry powder, and keep until required for use in a tightly corked bottle. Rub the plated ware lightly, rinse in hot soapsuds, and then in clean water, and dry in sawdust. Small plated articles blackened with silver sulphide may be dipped for an instant in dilute hydrochloric acid and then rinsed in clean water.

Large articles blackened in the same way may be immersed in a 10 per cent, solution of sulphuric acid, or may be wiped wit n a swab carrying dilute nitric acid; always after applying acid rinse in clean water.