Freezing Mixture

Take four parts Nitric Acid, six parts Nitrate

Ammonia, and nine parts phosphate of Soda. Having first prepared a

vessel of galvanized iron four inches wide, twenty-four inches long,

and twelve inches deep, have it a little wider at the top than at the

bottom. Now make another vessel eight inches wide, twenty-eight inches

long and fourteen inches high. Put the small vessel inside the larger

one, fill the small one near y full of as cool water as you can

procure, put the freezing mixture in the large vessel around the

smaller one, set this in as cool a place as possible. If you will have

a faucet at the lower edge of the larger vessel and first fill the

large vessel with the following it will greatly assist in freezing.

Equal parts of Sal-Ammonia and Nitre dissolved in its own weight of

water. In ten to fifteen minutes pour this off and put in the freezing

mixture.



NOTE

I have used the above description of a vessel to give you an

idea of how to operate. Any sized vessel made in the same proportion

will work as well.