The best silver bronze is made by mixing silver leaf with honey or gum water, and grinding to powder in a mortar, after which the powder is washed with water and dried. For a common silver bronze, melt together lib. of bismuth and l1 b. of tin, and add 1/2 lb. of mercury. Pour the amalgam on to a cold surface and grind to powder in a mortar. Another form of silver bronze is simply pulverised white mica.