Eighteen Carat Gold For Rings

Gold coin, 19½ grs.; pure copper, 3 grs.; pure silver, 1½ grs.

Cheap Gold, Twelve Carat

Gold coin, 25 grs.; pure copper, 13½ grs.; pure silver, 71/3 grs.

Very Cheap Four Carat Gold

Copper, 18 parts; gold, 4 parts; silver, 2 parts.

Imitations Of Gold

1. Platina, 4 dwt.; pure copper, 2¼ dwt.; sheet-zinc, l dwt.; block-tin, 1¾ dwt.; pure lead. 1½ dwt. If this should be found too hard or brittle for practical DM, re-melting the composition with a little sal-ammoniac will generally render it malleable as desired. 2. Platina, 2 parts; silver, l part; copper, 8 parts. These compositions, when properly prepared, bo nearly resemble pure gold that it is very difficult to distinguish them therefrom. A little powdered charcoal mixed with metals while melting will be found of service.

Best Oroide Of Gold

Pure copper, 4 oz.; sheet zinc, 1¾ oz.; magnesia, 5/8 oz.; sal-ammoniac, ½ oz.; quicklime, 9-32 oz.; cream tartar, 7/8 oz. First matt the copper at as low a temperature as it will melt; then add the zinc, and afterwards the other articles, in powder, in the order named. Use a charcoal fire to melt these metals.

Bushing Alloy For Pivot Holes, Etc

Gold coin. 3 dwt.; silver, 1 dwt., 20 grs.; copper, 3 dwt., 20 grs.; palladium, 1 dwt. The best composition known for the purpose named.

Gold Solder For Fourteen To Sixteen-Carat Work

Gold coin, 1 dwt.; pure silver, 9 grs.; pure copper, 6 grs.; brass, 3 grs.

Darker Solder

Gold coin, 1 dwt.; pure copper, 8 grs.; pure silver, 5 grs.; brass, 2 grs.; melt together in charcoal fire.