1867 Six Hundred Receipts by John Marquart

600 MISCELLANEOUS VALUABLE RECEIPTS.

L'25

bowl or other earthen vessel, and add to it tlie gold solution. Bend the conducting wires so that the two poles will be immersed in the solution. Attach a small piece of gold or platina to the positive pole or con ducting- wire which is attached to the copper cups, and place the pieces to be gilted on the nega- tive or the one proceeding from the zinc cup.

No. 489.

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Galvanism Simplified.

Silver- Plating Fluid,

Dissolve 1 ounce nitrate of silver, in crj^stal, in 12 ounces soft water. Then dissolve in the water 2 ounces cyanuret of potash. Shake the whole to- gether, and let it stand till it becomes clear. Have ready some half-ounce vials, and fill them half full of Paris white, or fine whiting ; then fill up the bottles with the liquid, and it is ready for use. The wdiiting does not increase the coating-powder; it only helps to clean the articles, and to save the silver-fluid by the bottles. No. 490. Silver Solution for Plating Cojjper, Brass, and Gerinan Silver. Cut into small pieces a twenty-five-cent-piece, and put it into an earthen vessel with | ounce of nitric acid. Put the vessel into warm water, uncovered. until it dissolves. Add J gill of water and 1 tea- suoonful of fine salt: let it settle. Drain ofi* and re|)eat, adding water to the sediment until the acid ta>tc is all out of tbe water. Add, finally, about a pijit of water to the sediment and 4 scruples cyanide 2H