Snelling, Henry Hunt, 1816-1897 · [New York : W.B. Smith] · leaf 244
many operators deposit a thin filmof silver on the plate by the galvanic bat-tery. This is a good plan, but adds a lit-tle to the trouble of the operation ; it iswell-paid for in the superior biilliancy ofthe proofs obtained from these electro-sil-vered plates. The apparatus necessary isrepresented… … of sulphuric acid ; and ths depositing cellB is filled with a solution made as follows :Dissolve two ounces of cyanide of potas-sium in one pint of water, and then addhalf an ounce of oxide of silver; as soonas this is dissolved the liquid is ready foruse. A piece of silver foil should beplaced in…
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