DOI Seite / Zitierlink:
https://doi.org/10.11588/diglit.19575#0017
ib J A P
be firft primed with fize and whiting, letting it dry between each
time, and at laft rufli it fmooth.
3. Then ftrike over the breadth of a leaf of filver with a fit
varnifhing pencil, and the thickeft feed-lac varnifh ; then take up
the filver leaf with a cotton, and lay it on your work while it is
moift, dabbing it down clofe to the work, as is directed in
gilding.
4. Then, in the like manner, varnifh another place, and lay
on another leaf as before, doing this till the whole work is co-
vered over with leaf filver; then let it ftand to be thoroughly dry,
and fweep off all the loofe filver with a fine hair brufh.
5. After this, take lamp-black, or rather Cologn earth, which
comes neareft to the colour of the fhell, as much as you pleafe ;
and grind it with parchment fize, or gum water, till it becomes
very fine and impalpable ; and, when it has been ground very
fine, mix it with more parchment fize and gum water, agreeing
with what you firft ground withal.
6. Spot the darkeft part of your fhell-work with this mixture,
after a carelefs cloudy manner, imitating nature as much as can
be, letting a piece of true tortoife-fhell lie by you for your imi-
tation.
7. Grind fine fanguis draconis in gum water very foft; but
fome grind it dry till it is very fine, and then mix it with fine
feed-lac varnifn^which is mod proper and agreeable for this work,
and not fo apt to be polifhed off as fize or gum water.
8. Now whereas there are feveral reds, lighter and darker, to
be round on the edges of the blacker part, which fometimes lie
in {beaks and clouds on the tranfparent part of the fhell; thefe
are to be imitated with one of the two former mixtures of dragons
blood.
9. With a final! pencil, dipped in one of thofe mixtures, dafli
the faid red ftreaks, Sec. flufhing them in and about the dark pla-
ces, both thicker and thinner, fainter and lighter, and with lefs
colour towards the lighter part; and afterwards fweeten it by
degrees, that it may fo lofe its ftrength and rednefs, as to be quite
loft in the filver, or more tranfparent parts of the work.
10. When you have done this, give it fix or feven wafhes of
fine feed-lac varnifh ; and, letting it ftand to dry for a day or
two, rufh it gently and very fmooth, to render it fit for the next
operation.
11. Take fine fanguis draconis and gamboge of each a fuffi-
cient quantity, reduce them to a fine powder; mix thefe with as
much fine feed-lac varnifh as will varnifh the piece fix or feven
rimes over, and fet it by to dry for fix or {'even hours or more.
12. Then give it another, or third varnifhing, with the laft
mixture.
be firft primed with fize and whiting, letting it dry between each
time, and at laft rufli it fmooth.
3. Then ftrike over the breadth of a leaf of filver with a fit
varnifhing pencil, and the thickeft feed-lac varnifh ; then take up
the filver leaf with a cotton, and lay it on your work while it is
moift, dabbing it down clofe to the work, as is directed in
gilding.
4. Then, in the like manner, varnifh another place, and lay
on another leaf as before, doing this till the whole work is co-
vered over with leaf filver; then let it ftand to be thoroughly dry,
and fweep off all the loofe filver with a fine hair brufh.
5. After this, take lamp-black, or rather Cologn earth, which
comes neareft to the colour of the fhell, as much as you pleafe ;
and grind it with parchment fize, or gum water, till it becomes
very fine and impalpable ; and, when it has been ground very
fine, mix it with more parchment fize and gum water, agreeing
with what you firft ground withal.
6. Spot the darkeft part of your fhell-work with this mixture,
after a carelefs cloudy manner, imitating nature as much as can
be, letting a piece of true tortoife-fhell lie by you for your imi-
tation.
7. Grind fine fanguis draconis in gum water very foft; but
fome grind it dry till it is very fine, and then mix it with fine
feed-lac varnifn^which is mod proper and agreeable for this work,
and not fo apt to be polifhed off as fize or gum water.
8. Now whereas there are feveral reds, lighter and darker, to
be round on the edges of the blacker part, which fometimes lie
in {beaks and clouds on the tranfparent part of the fhell; thefe
are to be imitated with one of the two former mixtures of dragons
blood.
9. With a final! pencil, dipped in one of thofe mixtures, dafli
the faid red ftreaks, Sec. flufhing them in and about the dark pla-
ces, both thicker and thinner, fainter and lighter, and with lefs
colour towards the lighter part; and afterwards fweeten it by
degrees, that it may fo lofe its ftrength and rednefs, as to be quite
loft in the filver, or more tranfparent parts of the work.
10. When you have done this, give it fix or feven wafhes of
fine feed-lac varnifh ; and, letting it ftand to dry for a day or
two, rufh it gently and very fmooth, to render it fit for the next
operation.
11. Take fine fanguis draconis and gamboge of each a fuffi-
cient quantity, reduce them to a fine powder; mix thefe with as
much fine feed-lac varnifh as will varnifh the piece fix or feven
rimes over, and fet it by to dry for fix or {'even hours or more.
12. Then give it another, or third varnifhing, with the laft
mixture.