Wedgwood Gray.—Zinc oxide, Prussian blue, glazed with terra verte.
Note.—The terms "Zinc white," "White zinc" used above, all mean pure zinc oxide.
Scumbling and Graining.
It is sometimes desired to obtain a different effect from plain paint or enamel, and to either imitate graining, such as old oak or to give mottled effects. Both processes are produced by scumbling, which means that the ground and finishing colours are different in hue or in intensity, and that portions of the latter are removed to show part of the ground. Thus, in imitating oak, the ground might be painted with a mixture of zinc oxide and yellow ochre, and the graining colour be made of burnt umber and raw sienna. Both coats could be applied either by dipping or spraying, but while the latter is wet, portions should be removed by combs and by the thumb held over a piece of rag, both marks being intended to represent the grain of the wood. In other cases, the colours may be applied as before, and the last coat, while wet, be wiped away at the edges, or in the case of relief metal work, at the highest parts. Again, some excellent effects are obtained by using different colours for the two coats, as suggested, and stippling the second, while wet.
Space will not permit of a more lengthy reference to this part of the subject, but full information can be obtained from Mr. Miller's book already mentioned. Something should be said, however, about
Brush Graining,
because it is so very well suited for work of this character, and by its use some very pleasant effects may be produced.
Fig. 116.—Show Card Done by Spraying.
