3410. German Silver for Rolling'

3410. German Silver for Rolling'. Nickel and zinc, each 1 part; copper, 2 parts. Very fine. Or: nickel, 25 parts; zinc, 20 parts; copper, 60 parts. Used for rolling.

3411. German Silver for Castings

3411.     German Silver for Castings. Nickel and zinc, each 20 parts; copper, 60 parts; lead, 3 parts. For castings. Or, to either of the above add 2 to 3 per cent, of white sheet iron.

3412. Genuine German Silver

3412.    Genuine German Silver. Copper, 401/2 parts; nickel, 311/2 parts; zinc, 251/2 parts; iron, 24 parts. This resembles the genuine German silver made from the ore of Hildburghausen, as well as Pakfong, as analyzed by Dr. Fyfe, and is equal to the best Chinese sample.

3413. Pelouze's German Silver

3413. Pelouze's German Silver. Equal parts of copper and nickel. Said to be superior to any of the alloys containing zinc. 2 parts of copper to 1 part of nickel make the alloy more malleable, though not so white.

3414. Chinese White Copper

3414.    Chinese White Copper. This consists of 30 parts copper, 36 parts nickel, and 34 parts zinc.

3415. Pakfong, or White Copper from China

3415.     Pakfong, or White Copper from China. This is composed of 41 parts copper, 32 parts nickel, 241/2 parts iron, and 241/2 parts zinc. The Chinese Pakfong is said to be prepared from native ore. It is silvery white, takes a high polish, very sonorous, malleable both cold and at a dull red heat, and may be rolled into leaves or drawn into wire.

3416. White Spoon Metal

3416.     White Spoon Metal. This is the alloy sold as German plate. Melt together 55 parts copper, 24 parts nickel, 16 parts zinc, 3 parts tin, and 2 parts iron. This is a useful alloy.

3417. Britannia Metal

3417.    Britannia Metal. Plate brass, 4 ounces; tin, 4 ounces; when fused add 4 ounces each of bismuth and antimony. This composition is added at discretion to melted tin.

3418. To Clean Britannia Ware

3418.      To Clean Britannia Ware. Britannia ware should be first washed with a woolen cloth and sweet oil, then washed in water and suds, and rubbed with soft leather and whiting. Thus treated, it will retain its beauty to the last. Britannia ware may also be cleaned in the same way as copper, in No. 3252.

3419. Type Metal

3419.   Type Metal. Lead, 3 parts; antimony, 1 part; melted together. Small types are usually made of a harder composition than large ones. A good stereotype metal is said to be made of lead, 9 parts; antimony, 2 parts; bismuth, 1 part. This alloy expands as it cools, and consequently brings out a fine impression.

3420. Bismuth and Lead

3420.     Bismuth and Lead. Lead, 2 parts to bismuth, 1 part, gives an alloy which dilates powerfully at the time of cooling. This property makes it extremely suitable to all castings in which the greatest sharpness and finish are desirable.