1000000030

728 / 1042

G L .A ;::1 'C 1. A
-cementecho.a llloodenplank, to guard it from Ibe i;,jury
it niuU otherwife reeeive fromthe ferapiogof Ih~ wbeel,
to which Ihis plaok is f' leoed; ~od from Ibe weighn
hid upoo il, tO pr~m)le the grindiog. or friture, of
Ihe glafl'cs. The whole is eOfered \Vuh a.wbeel, B,
made of hard ligbt wood, about fiJ( ioehes in diammr;
by pulliog of whieh baek wards aod forwards alteroate·
Iy, and rometim~j turoiog it round, the workmen who
alwa~s flaod oppoGte tO each olher, produce a eonflant
artritloo berweeo Ihe tWO glall'es, aod briog rhem 10
\Vhat degree of fmoothoefs thef pleafe, by firfl pour·
iog in warer 'aod eo~rfe Caod; afler thar, a finer fon
of fand, as rhe .word advaneeth, rill al la(l tbey muf[
pour io me powder of fmalt. As ~he upper or ineum·
bent glafspolilbes, and grows fmoother, it mufl b~ takeo
away, aorl.aoother from time to time put ioin place.
This ealled a'mill by the mi(ls,.and is ufed
oolyio Ihe.largefl fize glall'es; for io the grinding of tbe
lell'erglalTos, Ih~y are eonteot to work wirhout awhecl,
and whave .only four wooden haodles falleoed ro'the
foor corners of the (k¡nc·whieh load, Ibe upper pldok,
by which they work it about.
Wheo the grioder has dooe bis part, who fiods it
very ddlieull to briog rhe glafs to ao exaél plain.
Defs, it is tu roed over·tOthe eare of tbe poli/her, who
wilh the fine powder of tripoli.flooe, or emery, briogs
it ro a perfe/\ e~enoefs aod lufue. The io(lrumeot
made ufe of io this braoeh, is a board, e, e, furni/hed
wirh a felr, 30d a fmall roller, whieh the workman
moves bymeaos of a double haodle at both eods. The
•rtifl io workiog Ihis roller, is atlifled \Vith a woodeo
hoop or fpriog, tO the eod of whieh it is 6xed: for Ihe
{priog, by eoo(laouy briogiog tbe roller baek ro !he fame
paiars, facilitales Ihe 2aioo of the workmao's armo
Painting in GL! ss. The aoeiene maoner of paiotiog in
glafs lilas very Gmple; it eoofifled io the mere arraoge·
meet of pieces of glafs of different eolours io fome fon
. of fymmetry, and.eoollieuted wbat is, oow eaJled Mo·
work. See MOSArr.
lo proecfs 01' time chey eame to artempt more regu·
lar defigns, aod alfo to reprefene figures heighteoed
with all Iheir /hades: yee they proceeded no fanher
Ihao Ihe eontours of the figures io hlaek,wilh waeer·
eolours, aod hatchiog Ihe draperies )fter Ihe fame mano
Der 00 glall'es 01 che colour of the objeéllhey defigned
to painr. For tbe earoalion, they ufed glafs 01 abright
re~ eolour; aod upoo this they drew the priocipal li·
ne.1ments of the face, <be. ",ith black.
But io lime, ehe. la(le for mis fort of paioliog im·
proviDg cooGderably, aod the an beiog found appli.
cable tOthe adoroing of ehurehes, bafilia, élc. ehey
fouod out meaos of iocorporatiog the eolours iD me
glafs itfelf, by healiog them iD Ihe Gre to 2 proper de·
gree: haviog 6r(l laid 00 the colours. The colours
ufed io paiottng or fldioiog of glafs are very ditrerent
from thofe ored io paioting eilher io water or oil co·
loors.
For black, T ..!¡e feales of iroo, ooe oooee; fcales
of copper, one, ouoee; jet, half ao oonee; reduce
Ibem 10 powder, aod mix them. For blue, Take pow·
der of blue, oo~ pouod i fal nitre, half a pound; mix
Ihem .od g'ind them wtll tog:t!ler, For C':'.rnation,
T.k~ red elght ouoces ; 1100 [cales aod lithare:
of fih'er, of eaeb t.·o ouoees; gum 3«bic, half ao
ouoe: ; Mi .I,e io water; grin<! altogether for half ao
hour a~ filfl' as you eao; Iheo pUt It io a glafs ¡od
lIir il v.·~IJ, aod let it fIaod tO [eIIle fourreeo days.
For ~reeo, red le. d, ooe pouud; fed1cs of eop'
per, on. pound; Dod Rint, fi"e pouods; divide them
into three pans; and add tO them as mueb fjl oitre'
pUl theOl illtn a crueible, aod melt tbem with a ntoog
fire; aod when il is eold, powd~r it, and griod it 00
a porphyry. For gold colour, filver an ouoee:
aodmony. half ao ouoee; melt them iD a efUeible;
th"n pouod the mafs tO powder; aod griod il 00
a eopper plate; add to il yellow oker, or briek.dull
ealcir,tJ agaio, Hteeo ouoees; :rod griod rhemweJl 10.
gether I\'ilh waler. For purple, Take mioiuOl, one
pouod; browo flooe, ooe PGund; white fiiot, five
pouoru: divide them iOlo three parts, and add 10 theOl
as mueh ;.1 OItre as ooe of Ihe partS; calcine, lOelt, aod
grind il as you did the g.eeo. For red,Take jet, fourouo.
ces; lilha'ge of filver, two aunees'; red chalk, ooe
ounee; powder themfioe, aod mix them. For while,
Take jet, t\Vo parts; ",hile fiiot, grouod 00 a glafs
very 6ne, ooe pan; mix them. For yellow, take
Spanifh browo, teo pans; leaf filver, ooe pan; aolÍ·
mooy, half a pm ; pUt aJl ioto a crueible, aod cal·
cine them . ·ell.
lo the wiodows of aoeient ehurehes, oc. Ihere are
10 be feco tbe mon beauoful aod Vivid eolours imagi•
nable, wbieh far exmd aoy of thofe ufed by Ihe mo·
deros, nOI fo mueh bee~ufe Ihe makiog thofe
colours is enlirely lofl, as that the moderos will 001 go
tOthe eharge of them, oor be at Ihe neeell'ary pains,
by reafon that this fotl of paioting is OOt oow [o mueh
io e(lcem as furmerly. Thofé beauriful works ",hieh
.were made iJ the glafs.houf:s were .of IWO kiods.
In fome, lhe oolour was diffufed through rbe whole
{ubflaoce .of the glafs. lo others, whieh wm tbe
more eommoo, the eolour was ooly 00 ooe.fide, (caree
peowatiog within Ihe fubllaoee above ooe Ihird of a
lioe: rhough this was more or Itfs aeeordiog tO the
oalure of Ihe eolour ; rhe yellow beiog always fouod
10 enter the deepe(l. Thefe la(l, Ihoogh no! fo nroog
aod beautituJ as Ihe former, were of more advaolage
to the workmeo, by reafon Ihat 00 Ihe [ame glall,
Ihougb already eoloured, Chey eould Ibew omer kiod
of eolours where there was oecafion to embroider dra·
peries, eorieh them with foliages, or reprcfeot other
ornamenrs of gold, filver, 6c.
IDorder 10lhis, they made ufe of emery, grioding
or weariog down the furface of tbe , till fu b
time as theywere gOt through lhe colour 10 Ihe clear
glafs. This dooe, they applled the proper eoloDrs 00
the other fide of Ihe glafs. By tbefe meaos, the oew
.colours were h.odered from ruooing and Olixing wilh
the former, wheo they expofed tbe gla{fc:s to the 6ft,
as will appear hereafler.
. \Vheo indeed the oroameon werr 10 appear white,
tbe was ooly hared of it, colour wllh emery,
wilhout tiogiog tbe place with 30y eolour ae all; and
thu