XII.—Copper, 70 parts; zinc, 30 parts.
XIII.—German Brass.—Copper, 1 pound; zinc, 1 pound.
XIV.—Watchmakers’ Brass.—Copper, 1 part; zinc, 2 parts.
XV.—Brass for Wire.—Copper, 34 parts; calamine, 56 parts.
XVI.—Brass for Tubes.—Copper, 2 parts; zinc, 1 part.
XVII.—Brass for Heavy Work.—Copper, 100 parts; tin, 15 parts; zinc, 15 parts.
XVIII.—Copper, 112 parts; tin, 13 parts; zinc, 1 part.
XIX.—Tombac or Red Brass.—Copper, 8 parts; zinc, 1 part.
XX.—Brass.—Copper, 3 parts; melt, then add zinc, 1 part.
XXI.—Buttonmakers’ Fine Brass.—Brass, 8 parts; zinc, 5 parts.