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French Bronze

An eminent Parisian sculptor makes use of a mixture of + ounce sal-ammoniac, ounce common salt, 1 ounce spirits of hartshorn, and 1 imperial quart of vinegar. A good result will also be obtained by substituting an additional ounce vapors. A dilute solution of ammonia al- sal-ammoniac, instead of the spirits of hartslowed to dry upon the copper surface will horn. The piece of metal, being well cleaned, leave a green tint, but not very permanent. is to be rubbed with one of these solutions, 3782. Bronzing with Bleaching and then dried by friction with a clean brush.

Powder. Electrotypes may be bronzed If the hue be found too pale at the end of 2 green, having the appearance of ancient or 3 days, the operation may be repeated. It bronze, by a very simple process. Take a is found to be more advantageous to operate small portion of bleaching powder (chloride of in the sunshine than in the shade. lime), place it in the bottom of a dry vessel, and suspend the medal over it, and cover the phur. When objects made of copper are 3787. To Bronze Copper with Sulvessel; in a short time the medal will acquire immersed in melted sulphur mixed with lampa green coating, the depth of which may be black, the objects so treated obtain the apregulated by the quantity of bleaching powpearance of bronze, and can be polished withder used, or the time that the medal is out losing that aspect. suspended in its fumes; of course, any sort of 3788. Antique Bronze. Dissolve 1. vessel, or any means by which the electroounce sal-ammoniac, 3 ounces cream of tartype may be exposed to the fumes of the tar, and 6 ounces common salt, in 1 pint hot powder, will answer the purpose ; a few water; then add 2 ounces nitrate of copper, grains of the powder is all that is required. dissolved in pint water; mix well, and apply According as the medal is clean or tarnished , it repeatedly to the article, placed in a damp dry or wet, when suspended, different tints, situation, by means of a brush moistened. with different degrees of adhesion, will be ob- therewith. This produces a very antique tained. effect.