Part 110

White lead 13 parts Flint glass 10 parts Feldspar 18 parts Stone 3 parts Whiting 1 1⁠/⁠2 parts

Best:

Feldspar 20 parts Flint glass 14 parts White lead 14 parts Stone 3 parts Oxide of zinc 3 parts Whiting 1 1⁠/⁠2 parts Plaster 1 part

«Rockingham Bodies.»—

Ball clay 20 parts China clay 13 parts Flint 7 parts Stone 1 part

Cane marl 22 parts China clay 15 parts Flint 8 parts Feldspar 1 part {172}

«Glazes.»—

I.—Red lead 60 parts Stone 8 parts Red clay 3 parts Best manganese 5 parts

II.—White lead 60 parts Feldspar 6 parts Flint 16 parts Red clay 6 parts Manganese 12 parts

III.—Red lead 100 parts Stone 15 parts Flint 10 parts China clay 10 parts Manganese 40 parts Crocus martis 2 parts

IV.—Litharge 100 parts Feldspar 14 parts China clay 20 parts Manganese 40 parts Oxide of iron 2 parts

«Jet.»—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:

Glaze.—

Stone 60 parts Flint 30 parts Paris white 7 1⁠/⁠2 parts Red lead 140 parts

One part mazarine blue stain to 10 parts glaze.

Mazarine Blue Stain.—

Oxide of cobalt 10 parts Paris white 9 parts Sulphate barytes 1 part

Calcine.

Another Process Body.—

Ball clay 16 parts China clay 12 parts Flint clay 9 parts Stone clay 6 parts Black stain 7 parts

Glaze.—

Litharge 70 parts Paris white 3 parts Flint 12 parts Stone 30 parts Black stain 20 parts

Black Stain.—

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.

Blue Stains.—

I.—Oxide of cobalt 2 1⁠/⁠2 parts Oxide of zinc 7 1⁠/⁠2 parts Stone 7 1⁠/⁠2 parts