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Ormolu, or Mosaic Gold

Cop- senting flaws or cracks. Like copper, it is may be forged at a dull red heat without premay be forged at a dull red heat without preper and zinc, equal parts; melt together at the rendered more ductile by being heated and lowest possible temperature at which copper plunged into cold water. will fuse, and stir so as to produce a perfect admixture of the metals; then add gradually, Journals. 3430.

Copper and Aluminum for small portions of zinc at a time, until the alloy aluminum is that composed of 90 per cent. of The most important alloy of acquires the proper color, which is perfectly copper and 10 per cent. of aluminum. It poswhite, while in the melted state. It must sesses a pale gold color, a hardness surpassing then be at once cast into figured moulds. that of bronze, is susceptible of taking a fine This alloy should contain from 52 to 55 per polish, and is easier forged than soft iron. cent. of zinc.