DOI Page / Citation link:
https://doi.org/10.11588/diglit.19575#0259
23S S A S
of verdigreafe, one grain of azure; an ounce, one drachm, and
four grains of fine fait of tartar ; the whole in fine powder : Put
it into a crucible, covered and luted, to be baked and purified as
before, and you will have a very fine blue Sapphire, &c.
Another fine Sapphire. Take two ounces of powder of cry-
ftal, two ounces of fine fait of tartar, five drachms twenty-four
grains of verdigreafe, and thirty-two grains of azure ; the whole
reduced to impalpable powder, which you muff fet to bake and
purify in a covered crucible in a glafs-houfe furnace, as we have
faid before, and you will have a very fine Sapphire.
The way to make a violet Sapphire. Take one ounce of
powder of cryftal, one drachm of fait of vitriol, and nine drachms
of fine fait of tartar, the whole in fine powder ; then proceed as
before, and you will have a Sapphire of a very fine violet colour.
S ARDOIN, or Sardonian Jlone, fo called of Sardinia, is a pre-
cious {lone of a blood colour, half tranfparent ; the fame with
that which is otherwife called a cornelian.
The mofr. beautiful Sardoins are thofe brought from about Ba-
bvlon ; thofe of Sardinia are of the fecond clafs.
There are other Sardoins, and not contemptible ones, found
near St. Mauro in Albania ; and other very fmallones about the
Rhine, in Bohemia, Silefia, &c.
To give them the greater luftre, it is ufual, in fetting them,
to lay filver leaf underneath. This {tone is in moft ufe for feals,
becaufe it graves eafily, and takes a fine polifh.
SARDONYX, a precious ftone that partakes partly of the
onyx. It is reddifh, bordering on white, like the nail of the
hand ; in fome, the red inclines to yellow. It is brought from
the Eaft-IndieSj Arabia, and Bohemia.
Andrea del SARTO, born in the year 1478, fcholar of Pie-
tro di Cofimo, lived at Florence, excelled in hiftory-painting;
died in the year 1520, aged 42 years.
SASHES for windows, as clear as glafs. Take the fineft vel-
lum, or {link fkin, without knots or flaws, rub it with fine pow-
der of pumice-ffone well fifted, and, having flretched the fkin on
a frame a little wet, let it dry in the fhade, that it may harden
the better; then take two parts of nut oil, and one of linfeed,
and a little glafs finely powdered, and two parts of fair water,
and boil them all together in a glafs on a tile, pretty near the
fire, until the water evaporate ; then, with this, brufh over the
Safhes of vellums, and dry them moderately in the fun, and they
will be very clear and tranfparent, giving a more true and certain
light to do bufinefs by than glafs.
The manner of painting cloth, or fartut Sash windoius. Let the
cloth or farfnet be firft {trained tight to the frames, and there
made
of verdigreafe, one grain of azure; an ounce, one drachm, and
four grains of fine fait of tartar ; the whole in fine powder : Put
it into a crucible, covered and luted, to be baked and purified as
before, and you will have a very fine blue Sapphire, &c.
Another fine Sapphire. Take two ounces of powder of cry-
ftal, two ounces of fine fait of tartar, five drachms twenty-four
grains of verdigreafe, and thirty-two grains of azure ; the whole
reduced to impalpable powder, which you muff fet to bake and
purify in a covered crucible in a glafs-houfe furnace, as we have
faid before, and you will have a very fine Sapphire.
The way to make a violet Sapphire. Take one ounce of
powder of cryftal, one drachm of fait of vitriol, and nine drachms
of fine fait of tartar, the whole in fine powder ; then proceed as
before, and you will have a Sapphire of a very fine violet colour.
S ARDOIN, or Sardonian Jlone, fo called of Sardinia, is a pre-
cious {lone of a blood colour, half tranfparent ; the fame with
that which is otherwife called a cornelian.
The mofr. beautiful Sardoins are thofe brought from about Ba-
bvlon ; thofe of Sardinia are of the fecond clafs.
There are other Sardoins, and not contemptible ones, found
near St. Mauro in Albania ; and other very fmallones about the
Rhine, in Bohemia, Silefia, &c.
To give them the greater luftre, it is ufual, in fetting them,
to lay filver leaf underneath. This {tone is in moft ufe for feals,
becaufe it graves eafily, and takes a fine polifh.
SARDONYX, a precious ftone that partakes partly of the
onyx. It is reddifh, bordering on white, like the nail of the
hand ; in fome, the red inclines to yellow. It is brought from
the Eaft-IndieSj Arabia, and Bohemia.
Andrea del SARTO, born in the year 1478, fcholar of Pie-
tro di Cofimo, lived at Florence, excelled in hiftory-painting;
died in the year 1520, aged 42 years.
SASHES for windows, as clear as glafs. Take the fineft vel-
lum, or {link fkin, without knots or flaws, rub it with fine pow-
der of pumice-ffone well fifted, and, having flretched the fkin on
a frame a little wet, let it dry in the fhade, that it may harden
the better; then take two parts of nut oil, and one of linfeed,
and a little glafs finely powdered, and two parts of fair water,
and boil them all together in a glafs on a tile, pretty near the
fire, until the water evaporate ; then, with this, brufh over the
Safhes of vellums, and dry them moderately in the fun, and they
will be very clear and tranfparent, giving a more true and certain
light to do bufinefs by than glafs.
The manner of painting cloth, or fartut Sash windoius. Let the
cloth or farfnet be firft {trained tight to the frames, and there
made