Any article of brass or copper can be silvered by the French-silvering process as follows: Dissolve a stick of nitrate of silver in 1/2 pt. of water; add common salt, which will deposit the silver in a white mass at the bottom. Pour off the water and add fresh, stir up, allow to settle, and pour off again. The residue is silver chloride. To use it, clean the metal with fine emery-cloth, wash it in cold water, and rub its surface with salt brine. Then rub it over with a rag on which is a paste composed of equal quantities each of silver chloride, cream of tartar, and water. Continue rubbing until it is evenly silvered all over, then wash in plenty of water and dry with a soft clean cloth. Any silver chloride not used can be dried in the dark and kept in a bottle away from the light for future use. It is best to silver by gaslight or weak daylight.