210. The preceding instruction is applicable to all classes of matte papers and excellent results will be secured if the directions are carefully followed. The American Aristotype Company supply gold and platinum in liquid form ready for use, but in order to facilitate the use of these solutions, the following formula should be used when working with these particular chemicals.

Water....................................................

64 ozs.

Salt...........................................

30 grs.

Acetate Of Soda (Saturated Solution)................................

.1/2 oz.

Aristo Gold, No. 2.............................

.2 drs.