For covering bright metallic machine parts (except iron) or accessories with a nice and bright coating of silver, make the following silver solution:

1 oz. of nitrate of silver and 3 oz. of cyanide of potassium (poison); dissolve in 4 oz. of distilled water, and rub this solution with a woolen cloth on the articles to be silver-coated, which have heen previously carefully cleansed from grease as formerly directed. More water than 4 oz. may be used, up to 10 oz., if but a weak silver-coating is desired.

Instead of cyanide of potassium 6 oz. sulphite of soda may be used.