For a solution for electro-brassing small iron goods, dissolve 1 lb. of good yellow sheet brass in sufficient warm dilute nitric acid to dissolve the brass without leaving any free acid; then add the whole to 8 gal. of rainwater. Now add liquor ammonia until the brass solution assumes a deep blue tint, then add a solution of cyanide of potassium until all the blue tint disappeai-s. Filter through calico and add an equal bulk of rainwater to form the brassing bath. This must be worked with an anode of good yellow sheet brass, which should dissolve freely to maintain the solution in good working order. To obtain a uniform bright yellow deposit of brass on small iron goods held in baskets, some skill will be required, as the character of the deposit is influenced by the temperature of the solution, the density of the current, the proportions of metals, the size of the anodes, and the movement of the articles being plated. Very thick deposits of brass might be dipped in acid to improve their colour; it is not safe to dip thin ones.