This is prepared by fusing together very highly purified nickel (99.5 per cent) with copper, tin, and zinc. A bronze is produced containing 20 per cent of nickel, light-colored and very hard.

Bismuth Bronze

I II      III     IV

Copper......... 25.0   45.0   69.0   47.0

Nickel.......... 24.0   32.5   10.0   30.9

Antimony....... 50.0 ......     ...

Bismuth........ 1.0 1.0     1.0     0.1

Tin...............    16.0   15.0     1.0

Zinc..............    21.5   20.0   21.0

Aluminum............      1.0

I is hard and very lustrous, suitable for lamp reflectors and axle bearings; II is hard, resonant, and not affected by sea water, for parts of ships, pipes, telegraph wires, and piano strings; III and IV are for cups, spoons, etc.

Manganese Argentan

Copper........... 52 to 50 parts

Nickel............ 17 to 15 "

Zinc.............. 5 to 10 "

Manganese....... 1 to 5 "

Copper, with 15 per

cent phosphorus. 3 to 5 "

Readily cast for objects of art.

Aphtite

Iron................... 66 parts

Nickel................. 23 "

Tungsten............... 4 "

Copper................ 5 "

Arguzoid

Copper............   55.78 parts

Zinc...............   23.198 "

Nickel............   13.406 "

Tin............... 4.035 "

Lead.............. 3.544 "

Silver white, almost ductile, suited for artistic purposes.

Ferro - Argentan

Copper..............   70.0 parts

Nickel...............   20.0 "

Zinc................     5.5 "

Cadmium............     4.5 "

Resembles silver; worked like German silver.

Silver Bronze

Manganese, 18 per cent; aluminum, 1.2 per cent; silicium, 5 per cent; zinc, 13 per cent; copper, 67.5 per cent. The electric resistance of silver bronze is greater than that of German silver, hence it ought to be highly suitable for rheostats.