A sonorous metal for cymbals, gongs, and tam-tams consists of 100 parts of copper with 25 parts tin. Ignite the piece after it is cast and plunge it into cold water immediately.

Production Of Minargent

This alloy consists of copper, 500 parts; nickel, 350; tungsten, 25, and aluminum, 5. The metal obtained possesses a handsome white color and greatly resembles silver.

Minofor

The so-called Minofor metal is composed of copper, tin, antimony, zinc, and iron in the following proportions:

I        II

Copper........... 3.26      4

Tin.............. 67.53    66

Antimony......... 17.00    20

Zinc.............. 8.94      9

Iron..................       1

Minargent and Minofor are sometimes used in England for purposes in which the ordinary Britannia metal, 2 parts tin and 1 part antimony, might equally well be employed; the latter surpasses both of them in beauty of color, but they are, on the other hand, harder.