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COLOK, GEEEN.
129
88. Coloring.
Take 100 lbs. of white sugar, and mix with it 3 gallons
of water,in a copper or iron boiler of 50 gallons capacity.
It is necessary to have the boiler this size, as in manufac
turing coloring the liquid is apt to run over when made in
a smaller vessel. Put the boiler on a smart fire, and stir
the sugar constantly, so as to prevent its bmning on the
bottom. Keep it boiling until it gets as black as tar when
dropped on a cold stone. Then add slowly 6y gallons of
boiling water—atfirst, only a little at a time, and increas
ing the quantity gradually—constantly stirring a*the
whole is dissolved. Pass it through a flannel.
89. Color, Blue.
Take 3 ounqes ofsulphui-ic acid (smoking)and put it in
a one-gallon glass jar; add,in very small portions,1 ounce
of the finest powdered indigo, being very careful to stir
the ingredients constantly during the process of mixing
them. Let the jar stand in a warm place for several days,
and then add,very slowly, 3 quarts of water; after which
add, in small quantities,i lb. of chalk powder, and con
tinue stirring it as long as a froth rises from the mixture.
After having done this, let it stand for 24 hours,then de
cant, filter, mix li pint of alcohol with it, and bottle for
use.
90. Color, G-reen.
By mixing the tincture of saffron and the tincture ofin
digo together in different proportions, you can obtain any
shade of green you desire. For a light-green, increase the
saffron; for a dark-green increase the indigo.
6*
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