Take of gold, 4 parts; silver, 3 parts; copper 1 part; and zinc,
1 part.


148. GOLD SOLDER No. 2

Take of gold, 3 parts; silver, 3 parts; copper, 1 part; zinc,
1/2 part.


149. GOLD SOLDER No. 3

Take of gold, 2 parts; silver, 3 parts; copper, 1 part; and zinc 1/2
a part.

The gold, silver, and copper must be fused in a crucible before the
zinc is added, or else you cannot keep them in the vessel while
heating. When all are completely fused, they must be well stirred,
and run into bars. Solder No. 1 is for gold 16 carats and upwards;
No. 2 is for that 14 carats fine; and No. 3 for lower qualities. If
more zinc is added, it will fuse at a lower heat, but the colour is
not so good.


150. MOCK GOLD

Fuse together 16 parts of copper, 7 of platinum, and 1 of zinc. When
steel is alloyed with 1/500 part of platinum, or with 1/500 part of
silver, it is rendered much harder, more malleable, and better
adapted for all kinds of cutting instruments. Note.--In making