Double sulphate of nickel and ammonium       10 ounces.Ammonium chloride                             4  "Potassium chloride                            2  "Distilled water                               1 gallon.
The salts are dissolved in the water (hot), and the solution is worked at the ordinary temperature, about 16 degrees C.
The zinc may be cleansed in any suitable manner, but must be perfectly clean, of course, and finally rinsed in clean cold water and placed in the bath as quickly as possible; care being taken that it is connected before it touches the solution.--Electrical World.
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