Take a solution of nitro-muriate of gold (gold dissolved in a mixture of aquafortis and muriatic acid) and add to a gill of it a pint of ether or alcohol, then immerse your copper chain in it for about 15 minutes, when it will be coated with a film of gald. The copper must be perfectly clean and free from oxyd, grease, or dirt, or it will not take on the gold.

yellow brass, for turning. - (Common article.)

Copper, 20 lbs.; zinc, 10 lbs.; lead from 1 to 5 ozs. Put in the lead last before pouring off.

Red Brass, For Turning

Copper, 24 lbs.; zinc, 5 lbs.; lead, 8 ozs. Put in the lead last before pouring off.

Red Brass, Free, For Turning

Copper, 160 lbs.; zinc, 50 lbs.; lead, 10 lbs.; antimony, 44 ozs.

Another Brass, For Turning

Copper, 82 lbs.; zinc, 10 lbs.; lead, 1 lb.

Best Red Brass, For Fine Castings

Copper, 24 lbs.; zinc, 5 lbs.; bismuth, 1 oz. Put in the bismuth last before pouring off.

Bronze Metal

Copper, 7 lbs.; zinc, 3 lbs.; tin, 2 lbs.

Bronze Metal

Copper, 1 lb.; zinc, 12 lbs.; tin, 8 lbs.

Bell Metal, For Large Bells

Copper, 100 lbs.; tin from 20 to 25 lbs.

Bell Metal, For Small Bells

Copper, 8 lbs.; tin, 1 lb.

Cock Metal

Copper, 20 lbs.; lead, 8 lbs.; litharge, 1 oz.; antimony, 8 ozs.