This is produced by two ounces of American potash and two
ounces of pearlash mixed together in a vessel containing one quart of
hot water.
Another method is by dissolving a lump of bichromate of potash in warm
water; the tint can be varied by adding more water. This is best done
out of doors in a good light. Very often in sending for bichromate of
potash a mistake is made, and chromate of potash is procured instead;
this is of a yellow colour, and will not answer the purpose. The
bichromate of potash is the most powerful, and is of a red colour. A
solution of asphaltum in spirits of turpentine is frequently used to
darken new oak which is intended for painter's varnish, or a coating
of boiled oil.
Another method of imitating new oak upon any of the inferior
light-coloured woods is to give the surface a coat of Stephens's
satin-wood stain, and to draw a soft graining-comb gently over it, and
when the streaky appearance is thus produced a camel-hair pencil should
be taken and the veins formed with white stain.
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