soap. If very heavy, run through lukewarm water slightly acidulated with
vitriol, rinse, hydro-extract, and hang in stove. Another method to clear
them: Make up three lukewarm waters, in first put some bleaching liquor, in
second a little vitriol, handle these two, and rinse through the third,
hydro-extract, and hang in stove.

_Note_.--This is the method employed generally in small dye-works for all
dresses for black; their lots are so small. This preparation can be kept
up, if care is taken that none of the sediment of the copperas (oxide of
iron) is introduced when charging, as the oxide of iron creates stains.
This also happens when the water used contains iron in quantity or impure
copperas. The remedy is to substitute half a gill of vitriol in place of
tartar.

_Silk, wool, and cotton mixed dresses, for black_.--Dye the silk and wool
as before described, and also the cotton in the manner previously
mentioned.

_Another method to dye the mixed silk and wool and cotton dresses black,
four dresses_.--Bring boiler to the boil, put in 3 or 4 oz. aniline black,
either the deep black or the blue black or a mixture of the two, add ¼ gill
hydrochloric acid or sulphuric acid, or 3 oz. oxalic acid, shut off steam,
enter, and handle for half an hour, lift, rinse through water, dye the
cotton in the manner previously described.--_Dyer_.

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