yellow arsenic stirred in. A green is also the result of successive
formations in the pores of the wood of a blue and a yellow as above
indicated, and by a hot solution of acetate of copper in water. A
yellowish green may be obtained by the action of copper salts on the red
prussiate of potash.


=A Purple Stain.=--Boil one pound of logwood chips in three quarts of
water, until the full strength is obtained; then add four ounces of
pearlash and two ounces of powdered indigo. When these ingredients are
thoroughly dissolved, it is ready for use, either hot or cold. A purple
is also obtained by a boiling hot solution of logwood and Brazil-wood,
one pound of the former and one quarter of a pound of the latter to a
gallon of water.


=A Red Stain.=--Methylated spirits one quart, Brazil-wood three ounces,
dragon's blood half an ounce, cochineal half an ounce, saffron one
ounce. Steep the whole to its full strength, and strain. A red can also
be produced by macerating red-sanders in rectified spirits of naphtha.
An orange-red colour may be obtained by the successive action of
bichloride of mercury and iodide of potash, madder, and ammoniacal
solutions of carmine.


=Imitation Purple-wood Stain.=--Grind a piece of green copperas on
coarse glass-paper, and mix with polish coloured with red-sanders. This
makes a capital purple stain, and is used by French cabinet-makers.

These dyestuffs may be much improved by the addition of a mordant