Cooley's Cyclopædia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades..., Sixth Edition, Volume I

by Arnold James Cooley; Richard Vine Tuson

b. For Gilding:—1. Copper, 82 parts; zinc, 18 parts; tin, 3 parts; lead, 2 parts.

2. From copper, 83 parts; zinc, 17 parts; tin, 2 parts; lead, 1 part.

c. For Medals:—1. Copper, 89 parts; tin, 8 parts; zinc, 3 parts. This alloy assumes a beautiful antique appearance by age, and takes a sharp impression by stamping.

2. (M. Chaudet.) Copper, 95 parts; tin, 4 or 5 parts. This is also excellent for any small castings.

d. For Mortars:—Copper, 93 parts; lead, 5 parts; tin, 2 parts.

e. For Statuary:—1. Copper, 88 parts; tin, 9 parts; zinc, 2 parts; lead, 1 part.

2. Copper, 82¹⁄₂ parts; zinc, 10¹⁄₂ parts; tin, 5 parts; lead, 2 parts. These are very nearly the proportions of the celebrated statue of Louis XV.

3. Copper, 90 parts; tin, 9 parts; lead, 1 part.

4. Copper, 91 parts; tin, 9 parts.

For a gold varnish for bronze objects refer to Brass.