Take a $2.50 piece of gold, and put it into a mixture of 1 oz. nitric, and 4 oz. muriatic acid (glass vessels only are to be used in this work;) when it is all cut. dissolve ½ oz. of sulphate of potash in 1 pint of pure rain water, and mix with the gold solution, stirring well; then let it stand, and the gold will be thrown down; then pour off the acid fluid, and wash the gold in two or three waters, or until no acid is tasted by touching the tongue to the gold. Now dissolve 1 oz. of cyanuret of pot sium in 1 pint of pure rain water, to which add the gold, and it is ready for use. Clean the article to be plated from all grease and dirt, with whiting and a good brush; if there arc cracks, it may bo necessary to put the article in a solution of caustic potash; at all events clean it perfectly; then suspend it in the cyanuret of gold solution with a small strip of zinc, cut about the width of a common knitting needle, hooking the top over a stick which will reach across the top of the vessel holding the solution. If the zinc is too large, the deposit will be made so fast it will scale off. The slower the plating goes on the better, and this is arranged by the size of the zinc used. When not in use keep it well corked and out of the way of children, for it is very poisonous.

Electro Silver Plating is done every way the same as gold (using coin,) except that rock-salt is used instead of the cyanuret of potassium, to hold the silver in solution for use, and when it is of the proper strength of salt, it has a thick curdy appearance, or you can add salt until the silver will deposit on the article to be plated, which is all that is required. This method entails no trouble with using a battery, and is the successful result of a long series of experiments in electro-plating.