One part mazarine blue stain to 10 parts glaze.

Mazarine Blue Stain.—

Oxide of cobalt10 parts
Paris white 9 parts
Sulphate barytes 1 part

Calcine.

Another Process Body.—

Ball clay16 parts
China clay12 parts
Flint clay 9 parts
Stone clay 6 parts
Black stain 7 parts

Glaze.—

Litharge70 parts
Paris white 3 parts
Flint12 parts
Stone30 parts
Black stain20 parts

Black Stain.—

Chromate of iron12 parts
Oxide of nickel 2 parts
Oxide of tin 2 parts
Carbonate of cobalt 5 parts
Oxide of manganese 2 parts