DOI Seite / Zitierlink:
https://doi.org/10.11588/diglit.19574#0039
26
A S H
off in form of a whitifh or yellowlfh powder. , From what ro-
mains of the cobalt, they proceed to make fmalt.
The fmalleft quantity of any of thefe Arfenics, being mixt
with any metal, renders it friable, and abfolutely deftroys its
malleability.
Hence the refiners dread nothing fo much as Arfenic in their
metals ; nor could any thing be fo advantageous to them as a
menftruum, that would abforb or act on Arfenic alone ; for
then their metals would be readily purified, without flying off
or evaporating.
A fingle grain of Arfenic will turn a pound of copper into a
beautiful feeming filver; this hint many perfons have endea-
voured to improve on, for making of filver; but in vain, be-
caufe it could never be brought to fuftain the hammer; and
fome have been hanged for coining fpecies of this fpurious filver.
Of the colour of the bejl ASHES. The colour of the beft
Afhes is a fine blue or fky colour. The manner of examining
the colour is as follows, viz. by throwing a piece of very fine
white cloth or crape over the Afhes; and if the Afhes appear
ot a beautiful blue through the thin cloth, and the whitenefs of
the cloth plainlv appears as fpread over the Afhes ; it is a fatif-
factory proof that the Afhes are the beft and fineft.
This fort of Afhes is ufed in the linen manufacture in Bra-
bant, and by the thread bleachers; this is generally the fcarceft
fort, and bears the higheft price, and is not only fit to give a
luftre to linen, but is proper for all other manufactures, could
it be had in great plenty.
To dye cloth, iffc. ASH Colour. To dye a piece of fifteen ells
of cloth, &c. of an Afh colour, firft dye it a fky colour, with
woad and indigo ; then rinfe it out clean, and dry it; then ap-
ply the following black : Take four ounces of beaten galls;
one drachm of burnt alum ; half a pound of vitriol; boil the
dye, and the {tuff in it, for half an hour; then pafs it through,
and rinfe it; then add to the fuds three ounces of brafil, that
has been before boiled in a fkillet in part j three quarts of fharp
lye ; half an ounce of rock fait or fal gemmae, and you will
have a beautiful Afh colour.
You may alfo prepare this colour brighter with galls ; but, if
the luftre be not good, when taken out of the woad or indigo
copper to try, then add four ounces of fumach ; fix ounces of
vitriol; three ounces of madder; three ounces of fait; half an
ounce of burnt alum.
But the firft Afh colour is the more beautiful and lafting.
Another method of dying Ash Colours. Take a fufficient quan-
tity of water; nut-galls, bruifed fmall, eight ounces ; madder,
two ounces; put all into the veffel, and kt them boil; then en-
ter
A S H
off in form of a whitifh or yellowlfh powder. , From what ro-
mains of the cobalt, they proceed to make fmalt.
The fmalleft quantity of any of thefe Arfenics, being mixt
with any metal, renders it friable, and abfolutely deftroys its
malleability.
Hence the refiners dread nothing fo much as Arfenic in their
metals ; nor could any thing be fo advantageous to them as a
menftruum, that would abforb or act on Arfenic alone ; for
then their metals would be readily purified, without flying off
or evaporating.
A fingle grain of Arfenic will turn a pound of copper into a
beautiful feeming filver; this hint many perfons have endea-
voured to improve on, for making of filver; but in vain, be-
caufe it could never be brought to fuftain the hammer; and
fome have been hanged for coining fpecies of this fpurious filver.
Of the colour of the bejl ASHES. The colour of the beft
Afhes is a fine blue or fky colour. The manner of examining
the colour is as follows, viz. by throwing a piece of very fine
white cloth or crape over the Afhes; and if the Afhes appear
ot a beautiful blue through the thin cloth, and the whitenefs of
the cloth plainlv appears as fpread over the Afhes ; it is a fatif-
factory proof that the Afhes are the beft and fineft.
This fort of Afhes is ufed in the linen manufacture in Bra-
bant, and by the thread bleachers; this is generally the fcarceft
fort, and bears the higheft price, and is not only fit to give a
luftre to linen, but is proper for all other manufactures, could
it be had in great plenty.
To dye cloth, iffc. ASH Colour. To dye a piece of fifteen ells
of cloth, &c. of an Afh colour, firft dye it a fky colour, with
woad and indigo ; then rinfe it out clean, and dry it; then ap-
ply the following black : Take four ounces of beaten galls;
one drachm of burnt alum ; half a pound of vitriol; boil the
dye, and the {tuff in it, for half an hour; then pafs it through,
and rinfe it; then add to the fuds three ounces of brafil, that
has been before boiled in a fkillet in part j three quarts of fharp
lye ; half an ounce of rock fait or fal gemmae, and you will
have a beautiful Afh colour.
You may alfo prepare this colour brighter with galls ; but, if
the luftre be not good, when taken out of the woad or indigo
copper to try, then add four ounces of fumach ; fix ounces of
vitriol; three ounces of madder; three ounces of fait; half an
ounce of burnt alum.
But the firft Afh colour is the more beautiful and lafting.
Another method of dying Ash Colours. Take a fufficient quan-
tity of water; nut-galls, bruifed fmall, eight ounces ; madder,
two ounces; put all into the veffel, and kt them boil; then en-
ter