2. (Wynn.) Manganese, 9 parts; red lead, 34 parts; flint powder, 16 parts.

3. Red lead and calcined iron, of each, 1 part; antimony, litharge, and

sand, of each, 2 parts. To be added in any required proportion to white

'frit,' according to the colour desired. A little oxide of cobalt or

zaffre is frequently added to alter the shade.

=Enamel, Green.= _Prep._ 1. 'Flux' or 'frit,' 2 lbs.; black oxide of

copper, 1 oz.; as before.