part VI
.—Feldspar 10 parts Stone 5 parts Flint 2 parts Plaster 1/2 part
The following glaze is excellent for bricks in the biscuit and pottery, which require an easy firing:
«White.»—
White lead 20 parts Stone 9 parts Flint 9 parts Borax 4 parts Oxide of zinc 2 parts Feldspar 3 parts
These materials should be procured finely ground, and after being thoroughly mixed should be placed in a fire-clay crucible, and be fired for 5 or 6 hours, sharply, or until the material runs down into a liquid, then with a pair of iron tongs draw the crucible from the kiln and pour the liquid into a bucket of cold water, grind the flux to an extremely fine powder, and spread a coating upon the plate to be enameled, previously brushing a little gum thereon. The plate must then be fired until a sufficient heat is attained to run or fuse the powder.
«POTTERY BODIES AND GLAZES:»
«Ordinary.»—
I.—China clay 2 1/2 parts Stone 1 1/2 parts Bone 3 parts
II.—China clay 5 parts Stone 2 1/2 parts Bone 7 parts Barytes 3 parts
III.—Chain clay 5 parts Stone 3 parts Flint 1/4 part Barytes 8 parts
«Superior.»—
I.—China clay 35 parts Cornwall stone 23 parts Bone 40 parts Flint 2 parts {168}
II.—China clay 35 parts Cornwall stone 8 parts Bone 50 parts Flint 3 parts Blue clay 4 parts
III.—China clay 8 parts Cornwall stone 40 parts Bone 29 parts Flint 5 parts Blue clay 18 parts
IV.—China clay 32 parts Cornwall stone 23 parts Bone 34 parts Flint 6 parts Blue clay 5 parts
V.—China clay 7 parts Stone 40 parts Bone 28 parts Flint 5 parts Blue clay 20 parts
«Finest China Bodies.»—
I.—China clay 20 parts Bone 60 parts Feldspar 20 parts
II.—China clay 30 parts Bone 40 parts Feldspar 30 parts
III.—China clay 25 parts Stone 10 parts Bone 45 parts Feldspar 20 parts
IV.—China clay 30 parts Stone 15 parts Bone 35 parts Feldspar 20 parts
«Earthenware Bodies.»—
I.—Ball clay 13 parts China clay 9 1/2 parts Flint 5 1/2 parts Cornwall stone 4 parts
II.—Ball clay 12 1/2 parts China clay 8 parts Flint 5 1/2 parts Cornwall stone 2 1/2 parts One pint of cobalt stain to 1 ton of glaze.
III.—Ball clay 13 1/4 parts China clay 11 parts Flint 4 parts Cornwall stone 5 parts Feldspar 4 parts Stain as required.
IV.—Ball clay 18 1/2 parts China clay 13 1/2 parts Flint 8 1/2 parts Stone 4 parts Blue stain, 2 pints to ton.
V.—Ball clay 15 parts China clay 12 parts Flint 6 parts Stone 4 parts Feldspar 4 parts Blue stain, 2 pints to ton.
VI. (Parian).— Stone 11 parts Feldspar 10 parts China clay 8 parts
«COLORED BODIES:»
«Ivory Body.»—
Ball clay 22 parts China 5 1/2 parts Flint 5 parts Stone 3 1/2 parts
«Dark Drab Body.»—
Cane marl 30 parts Ball clay 10 parts Cornwall stone 7 parts Feldspar 4 parts
«Black Body.»—
Ball clay 120 parts Ocher 120 parts Manganese 35 parts Cobalt carbonate 2 parts
Grind the three last mentioned ingredients first.
«Caledonia Body.»—
Yellow clay 32 parts China clay 10 parts Flint 4 parts
«Brown Body.»—
Red clay 50 parts Common clay 7 1/2 parts Manganese 1 part Flint 1 part
«Jasper Body.»—
Cawk clay 10 parts Blue clay 10 parts Bone 5 parts Flint 2 parts Cobalt 1/4 part
«Stone Body.»—
Stone 48 parts Blue clay 25 parts China clay 24 parts Cobalt 10 parts
«Egyptian Black.»—
Blue clay 235 parts Calcined ocher 225 parts Manganese 45 parts China clay 15 parts
«Ironstone Body.»—
Stone 200 parts Cornwall clay 150 parts {169} Blue clay 200 parts Flint 100 parts Calx 1 part
«Cream Body.»—
Blue clay 1 1/2 parts Brown clay 1 1/2 parts Black clay 1 part Cornish clay 1 part Common ball clay 1/4 part Buff color 1/4 part
«Light Drab.»—
Cane marl 30 parts Ball clay 24 parts Feldspar 7 parts
«Sage Body.»—
Cane marl 15 parts Ball clay 15 parts China clay 5 parts Stained with turquoise stain.
«COLORED GLAZES FOR POTTERY:»
«Blue.»—
White glaze 100 parts Oxide of cobalt 3 parts Red lead 10 parts Flowing blue 3 parts Enamel blue 3 parts
Grind.
«Pink.»—
White glaze 100 parts Red lead 8 parts Marone pink U. G. 8 parts Enamel red 3 parts
Grind.
«Buff.»—
White glaze 100 parts Red lead 10 parts Buff color 8 parts
Grind.
«Ivory.»—
White glaze 100 parts Red lead 8 parts Enamel amber 8 parts Yellow underglaze 2 parts
Grind.
«Turquoise.»—
White glaze 100 parts Red lead 10 parts Carbonate of soda 5 parts Enamel blue 4 parts Malachite, 110 4 parts
Grind.
«Yellow.»—
I.—White glaze 100 parts Red lead 10 parts Oxide of uranium 8 parts
Grind.
II.—Dried flint 5 parts Cornwall stone 15 parts Litharge 50 parts Yellow underglaze 4 parts
Grind.
«Green.»—
I.—Oxide of copper 8 parts Flint of glass 3 parts Flint 1 part Red lead 6 parts
Grind, then take:
Of above 1 part White glaze 6 parts
Or stronger as required.
II.—Red lead 60 parts Stone 24 parts Flint 12 parts Flint glass 12 parts China clay 3 parts Calcined oxide of copper 14 parts Oxide of cobalt 1/4 part
Grind only.
«Green Glaze, Best.»—
III.—Stone 80 parts Flint 8 parts Soda crystals 4 parts Borax 3 1/2 parts Niter 2 parts Whiting 2 parts Oxide of cobalt 1/4 part
Glost fire, then take:
Above frit 60 parts Red lead 57 parts Calcined oxide of copper 5 1/4 parts
«Black.»—
Red lead 24 parts Raddle 4 parts Manganese 4 parts Flint 2 parts Oxide of cobalt 2 parts Carbonate of cobalt 2 parts
Glost fire.
«WHITE GLAZES:»
«China.»—Frit:
I.—Stone 6 parts Niter 2 parts Borax 12 parts Flint 4 parts Pearl ash 2 parts
To mill:
Frit 24 parts Stone 15 1/2 parts Flint 6 1/2 parts White lead 31 parts
{170}
II.—Frit:
Stone 24 parts Borax 53 parts Lynn sand 40 parts Feldspar 32 parts Paris white 16 parts
To mill:
Frit 90 parts Stone 30 parts White lead 90 parts Flint 4 parts Glass 2 parts
III.—Frit:
Stone 50 parts Borax 40 parts Flint 30 parts Flint glass 30 parts Pearl barytes 10 parts
To mill:
Frit 160 parts Red lead 30 parts Enamel blue 1/2 part Flint glass 2 parts
IV.—Frit:
Borax 100 parts China clay 55 parts Whiting 60 parts Feldspar 75 parts
To mill:
Frit 200 parts China clay 16 parts White clay 3 1/2 parts Stone 3 parts Flint 2 parts
V.—Frit:
Stone 40 parts Flint 25 parts Niter 10 parts Borax 20 parts White lead 10 parts Flint glass 40 parts
To mill:
Frit 145 parts Stone 56 parts Borax 16 parts Flint 15 parts Red lead 60 parts Flint glass 8 parts
«Earthenware.»—Frit:
I.—Flint 108 parts China clay 45 parts Paris white 60 parts Borax 80 parts Soda crystals 30 parts
To mill:
Frit 270 parts Flint 20 parts Paris white 15 parts Stone 80 parts White lead 65 parts
II.—Frit:
Flint 62 parts China clay 30 parts Paris white 38 parts Boracic acid 48 parts Soda crystals 26 parts
To mill:
Frit 230 parts Stone 160 parts Flint 60 parts Lead 120 parts
III.—Frit:
Stone 56 parts Paris white 55 parts Flint 60 parts China clay 20 parts Borax 120 parts Soda crystals 15 parts
To mill:
Frit 212 parts Stone 130 parts Flint 50 parts Lead 110 parts
Stain as required.
IV.—Frit:
Stone 100 parts Flint 44 parts Paris white 46 parts Borax 70 parts Niter 10 parts
To mill:
Frit 200 parts Stone 60 parts Lead 80 parts
«Pearl White Glaze.»—Frit:
Flint 50 parts Stone 100 parts Paris white 20 parts Borax 60 parts Soda crystals 20 parts
To mill:
Frit 178 pounds Lead 55 pounds Stain 3 ounces
«Opaque Glaze.»—Frit:
Borax 74 parts Stone 94 parts Flint 30 parts China clay 22 parts Pearl ash 5 1/2 parts
To mill:
Frit 175 parts Lead 46 parts {171} Flint 10 parts Oxide of tin 12 parts Flint glass 12 parts
«Glaze for Granite.»—Frit:
I.—Stone 100 parts Flint 80 parts China clay 30 parts Paris white 30 parts Feldspar 40 parts Soda crystals 40 parts Borax 80 parts
To mill:
Frit 360 parts Flint 50 parts Stone 50 parts Lead 80 parts
II.—Frit:
Borax 100 parts Stone 50 parts Flint 50 parts Paris white 40 parts China clay 20 parts
To mill:
Frit 210 parts Stone 104 parts Flint 64 parts Lead 95 parts
«Raw Glazes.»—White:
I.—White lead 160 parts Borax 32 parts Stone 48 parts Flint 52 parts
Stain with blue and grind.
II.—White lead 80 parts Litharge 60 parts Boracic acid 40 parts Stone 45 parts Flint 50 parts
Treat as foregoing.
III.—White lead 100 parts Borax 4 parts Flint 11 parts Cornwall stone 50 parts
IV.—Red lead 80 parts Litharge 60 parts Tincal 40 parts Stone 40 parts Flint 52 parts
«ROCKINGHAM GLAZES.»
I.—Litharge 50 parts Stone 7 1/2 parts Red marl 3 parts Oxide of manganese 5 parts Red oxide of iron 1