This section is from the "Henley's Twentieth Century Formulas Recipes Processes" encyclopedia, by Norman W. Henley and others.
Procure some first-class red marl, add water, and, by passing through a fine lawn, make it into a slip, and dip the ware therein.
When fired use the following:
Stone............ 60 parts
Flint............. 30 parts
Paris white....... 7.5 parts
Red lead.........140 parts
One part mazarine blue stain to 10 parts glaze
Oxide of cobalt..... 10 parts
Paris white........ 9 parts
Sulphate barytes........... 1 part
Calcine.
Ball clay........... 16 parts
China clay......... 12 parts
Flint clay.......... 9 parts
Stone clay......... 6 parts
Black stain........ 7 parts
Litharge........... 70 parts
Paris white........ 3 parts
Flint.............. 12 parts
Stone............. 30 parts
Black stain........ 20 parts
Chromate of iron... 12 parts
Oxide of nickel..... 2 parts
Oxide of tin........ 2 parts
Carbonate of cobalt. 5 parts
Oxide of manganese. 2 parts
Calcine and grind.
Oxide of cobalt..... 2.5 parts
Oxide of zinc....... 7.5 parts
Stone.............. 7.5 parts
Fire this very hard.
Zinc.............. 6 pounds
Flint.............. 4 pounds
China clay......... 4 pounds
Oxide of cobalt..... 5 ounces
Hard fire.
Whiting........... 3.75 parts
Flint.............. 3.75 parts
Oxide of cobalt..... 2.5 parts
Glost fire.
Prepared cobalt.... 1.5 parts
Oxide of zinc....... 6 parts
China clay......... 6 parts
Carbonate of soda .. 1 part
Hard fire.
 
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