C H A 93
well purified and paffed through a glove into another glafs bodv,
and clofe it well.
3. Put alfo a pound of aqua-fortis, with two ounces of fal ar-
moniac, into another glafs veffel to be difTolved.
When it is difTolved, add to it crocus martis, prepared feretto
of Spain, leaves of copper calcined, by means of fulphur, of each
half an ounce; reduce the whole into powder, putting them in
one after the other, and by little and little, for fear the matter
lhould break the veffel.
4. Put one pound of aqua-fortis, with two ounces of fal ar-
moniac, into another earthen body, and, when the whole is dif-
folved, add fucceffively, as before, of good crude antimony, of
blue enamel, fuch as is ufed by painters, of red lead, and of vi-
triol well purified, each half an ounce, all of them well pulve-
rifed ; thefe alfo muff, be put in by little and little, as before, for
fear of breaking the veflel; then clofe it well.
5. Put alfo one pound of aqua- fortis and two ounces of fal ar-
moniac into another glafs body, and when difTolved add two oun-
ces of zaffer prepared,aquarterof an ounce of manganefe of Pied-
mont alfo prepared, half an ounce of thrice calcined copper, and
an ounce of cinnabar; reduce all to a fine powder, and put them in
by little and little into the veffel, taking care that the powders do
not by too much fwelling break the veffel; then clofe it well.
6. Put a pound of aqua-fortis, and two ounces of fal armo-
niac, into a fixth veffel of the fame bignefs as the reft, and, as
foon as it is difTolved, caff, in two ounces of cerufs by little and
little, for that will alfo caufe a fermentation. Then add the like
weight of painters red lake, and as much of iron fcales from the
anvil, putting it in by little and little, for the reafons before-
mentioned ; and in a word proceed very flowly in all thefe
operations, flopping all the veffels well.
Set all thefe veffels on a gentle fire of afhes, or in a warm
bath, to faaften the folution of the materials; they muft be ftir-
red at leaft fix times a day, for twelve days, in which they muft
continue in that heat, that the aqua-fortis may the better pene-
trate the powders, and they communicate their tinctures the bet-
ter to the glafs. The twelve days being ended, put the whole
into a large glafs crucible, and lute it well for fear of breaking,
pouring them gently in out of the fix matraiTes, one after the
other, having firft well ftirred each of them ; then fet this cucur-
bit on a gentle afh fire, and, having fitted a head and receiver to
it, and luted the joints well, then gently diftij all the aqua-fortis
that is in the body, for the fpace of twenty-four hours, making
a very gentle fire towards the end, otherwife the powders may
be fpoiled by too much heat, and the fpirits, which oup-ht to re-
main in ihe powder, would pafs into the receiver.
Then
well purified and paffed through a glove into another glafs bodv,
and clofe it well.
3. Put alfo a pound of aqua-fortis, with two ounces of fal ar-
moniac, into another glafs veffel to be difTolved.
When it is difTolved, add to it crocus martis, prepared feretto
of Spain, leaves of copper calcined, by means of fulphur, of each
half an ounce; reduce the whole into powder, putting them in
one after the other, and by little and little, for fear the matter
lhould break the veffel.
4. Put one pound of aqua-fortis, with two ounces of fal ar-
moniac, into another earthen body, and, when the whole is dif-
folved, add fucceffively, as before, of good crude antimony, of
blue enamel, fuch as is ufed by painters, of red lead, and of vi-
triol well purified, each half an ounce, all of them well pulve-
rifed ; thefe alfo muff, be put in by little and little, as before, for
fear of breaking the veflel; then clofe it well.
5. Put alfo one pound of aqua- fortis and two ounces of fal ar-
moniac into another glafs body, and when difTolved add two oun-
ces of zaffer prepared,aquarterof an ounce of manganefe of Pied-
mont alfo prepared, half an ounce of thrice calcined copper, and
an ounce of cinnabar; reduce all to a fine powder, and put them in
by little and little into the veffel, taking care that the powders do
not by too much fwelling break the veffel; then clofe it well.
6. Put a pound of aqua-fortis, and two ounces of fal armo-
niac, into a fixth veffel of the fame bignefs as the reft, and, as
foon as it is difTolved, caff, in two ounces of cerufs by little and
little, for that will alfo caufe a fermentation. Then add the like
weight of painters red lake, and as much of iron fcales from the
anvil, putting it in by little and little, for the reafons before-
mentioned ; and in a word proceed very flowly in all thefe
operations, flopping all the veffels well.
Set all thefe veffels on a gentle fire of afhes, or in a warm
bath, to faaften the folution of the materials; they muft be ftir-
red at leaft fix times a day, for twelve days, in which they muft
continue in that heat, that the aqua-fortis may the better pene-
trate the powders, and they communicate their tinctures the bet-
ter to the glafs. The twelve days being ended, put the whole
into a large glafs crucible, and lute it well for fear of breaking,
pouring them gently in out of the fix matraiTes, one after the
other, having firft well ftirred each of them ; then fet this cucur-
bit on a gentle afh fire, and, having fitted a head and receiver to
it, and luted the joints well, then gently diftij all the aqua-fortis
that is in the body, for the fpace of twenty-four hours, making
a very gentle fire towards the end, otherwife the powders may
be fpoiled by too much heat, and the fpirits, which oup-ht to re-
main in ihe powder, would pafs into the receiver.
Then