Dissolve in nitric acid as in the case of the gold. When the silver has entirely disappeared, add to the water. ink, then, a sheet of clean copper into it - the silver will collect rapidly upon the copper, and you can scrape it off and melt into bulk at pleasure.

In the event you were refining gold in accordance with the foregoing formula, and the impurity was silver, the only steps necessary to save the latter would be to add the above-named proportion of water to the solution poured from the gold, and then to proceed with your copper plate as just directed.