The first thing is to produce a flux to fuse at a moderate heat, which, by flowing upon the plate, forms a uniform surface for the white or colored enamels to work upon.

Flux for Enameled Iron

White lead.......... 10 parts

Ball clay............ 1 part

Flint glass.......... 10 parts

Whiting............ 1 part

The plates may then be coated with any of the following mixtures, which may either be spread on as a powder with a little gum, as in the case of the flux, or the colors may be mixed with oil and the plates dipped therein when coated; the plate requires  heating sufficiently to run the enamels bright.

Soft Enamels for Iron, White

Flint glass..........   16 parts

Oxide of tin.........     1.5 parts

Niter............... 1.5 parts

Red lead............     4 parts

Flint or china clay. .. 1 part

Black

Red oxide of iron. ... 1.25 parts Carbonate of cobalt.. 1.25 parts

Red lead............ 6 parts

Borax.............. 2 parts

Lynn sand.......... 2 parts

Yellow Coral

Chromate of lead. . .. 1 part

Red lead............ 2f parts

Flint............... 1 part

Borax.............. J part

Canary

Oxide of uranium ... 1 part

Red lead............ 4.5 parts

Flint............... 1.5 parts

Flint glass.......... 1 part

Turquoise

Red lead............   40 parts

Flint glass..........   12 parts

Borax..............   16 parts

Flint...............   12 parts

Enamel white.......   14 parts

Oxide of copper..... 7 parts

Oxide of cobalt...... 0.25 part

Red Brown

Calcined sulphate of

iron.............. 1 part

Flux No. 8 (see page 307) 3 parts

Mazarine Blue

Oxide of cobalt......   10 parts

Paris white.......... 9 parts

Sulphate barytes..... 1 part

Fire the above at an intense heat and for use take

Above stain......... 1 part

Flux No. 8 (see page 307) 3 parts

Sky Blue

Flint glass..........   30 parts

White lead..........   10 parts

Pearlash........... 2 parts

Common salt........ 2 parts

Oxide of cobalt...... 4 parts

Enamel, white....... 4 parts

Chrome Green

Borax..............   10 parts

Oxide of chrome..... 4.25 parts

White lead.......... 9 parts

Flint glass.......... 9 parts

Oxide of cobalt...... 2 parts

Oxide of tin......... 1 part

Coral Red

Bichromate potash ..     1 part

Red lead............     4} parts

Sugar of lead........     1.5 parts

Flint...............     1.5 parts

Flint glass..........     1 part

Enamel White

Soft:

Red lead............   80    parts

Opal glass..........   50    parts

Flint...............   50    parts

Borax..............   24    parts

Arsenic.............     8    parts

Niter...............     6    parts

Enamel White

Red lead............ 10 parts

Flint............... 6 parts

Boracic acid......... 4 parts

Niter............... 1 part

Soda crystals........ 1 part

Where the enameled work is intended 'to be exposed to the weather do not use flux No. 8, but substitute the following:

White lead.......... 1 part

Ground flint glass.... 1 part

All the enamels should, after being mixed, be melted in crucibles, poured out when in liquid, and powdered or ground for use.