Trebel, George. [from old catalog] · New York, F. Tousey · leaf 56
alt ofcopper is decomposed by the electric current, and the copperis deposited on the surface of the mold. The sulphuricacid appears at the X pole, and, combining with the copperof this pole, forms new molecules of copper sulphate. Whenthe copper film has acquired the thickness of anordinary… … plate is then fastened on a block of wood, and thus built typehigh, and is now ready for the printer. The distinction between electro-plating and electro-typingis that with the former the metallic coat remains permanently
Electricity
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