An electro-gilding solution made as follows is required: Dissolve 1 oz. of potassium cyanide in lpt. of distilled water made hot in an enamelled iron saucepan; suspend in this two strips of pure gold attached to copper wires and connect to a battery of two Bunsen or Daniell cells for an hour or more. Remove the strip of gold attache! to the zinc element of the battery,and substitute a strip of silver. If this takes a nice gold colour, the solution will be fit for gilding. If not satisfactory, pass the current through the hot solution until it will gild properly. The cost of cyanide and water will be only a few pence.