1000000030

J ~6

Ihey gready promole fufioo; arf(oie bci"g ooe oC Ihe

mofl tlReaeious lJuxes koolVo.

lo n,nn, all Ihofe blue clalfes, or fll\lll$, eOlll,ill a

a n.,in quaOlity of

~rf(oie;

for a ponil'o of this

I~mi ·

metal aIIV'YS reo,aios uoited wi,h ,he fixc.! maller of ,he

eoh~h,

Ihnugh ru,lIed for a loog time, and in a "(ry

I,ot fire. T he portion of arCenie ,hdt is Ihus fi xecl vitri·

~es

with the

e~lollriog

maller, aod eoters i"10 the eom·

pofi lion of the liuah.

TheblueglaCsmade \Vilh the fixed part of eobah

h~th

fe,eral names, aecordillg to Ihe eoollitioll in "hieh it is.

\Vhcn il halh uodcrgone Ihe fir(l illlperle/t dl'grce of

fufi on only, it is

e~lIed

znffrt.

I. kes the name 01

¡ lIIoll

\Vhen perfe<'tly vilrilied : and this again being pul.

mifed is ealled

, ,,"del'

hlru ;

or, if fi nely levigated,

~/u:

enalll:l ;

beeaufe il is ufed in eoamelliog, as well as

io raintiog eanheo \Vare aod poreelaio.

flPl/rale ArfollieI rolll Su/phI/l'.

POIVD ER Ihe yellolV or red arfeoie \Vhieh you iOlend

lo feparate Irom ils fulphur.

~Ioifl(o

Ihis poIV.! 'r ",ilh

• fixed alkali refoh'ed ioto a liquor. Dry Ihe mixlure

gently; pUl il ioto

very lall glaCs eueurbil,

~od

fi l 00

a bliod·head. Set Ihis eueurbil io a faod·balh; IVarm

Ihe velfels geotly, and ioereafe Ihe fire by

dc~recs,

lill

you pereeive Ihal 00 more

~rfeoie

fublimes. The arCe·

nie, IVhieh before \Vas yellolV aod red, rifes iOlo the

head panly 00 white flOIVers, aod partly io a eompa<'t,

white, femi' lraofpareol mmer, whieh looks as if il were

~ilrified.

The fulphur eombined wilh Ihe fixed alkali

remaio! al the bOltomof Ihe eueulbil.

1'0 give Arftnie the Aletallinc For/ll. Regulul 01 Al"

fonie.

Take two pans of IVhile arfeoie io fioe powder, ooe

pan of Ihe hlaek Aux, lulf a pan of borax, aod as mueh

cleao iroo fi liogs. Rub Ihe IVhole logelher, io order 10

mix Ihem Ihoroughly PUl this mixlure iOlo a good eru·

eible, aod over il put fea

f~h

three fioger" Ihiek. Co·

ver Ihe erucible; fel il in a mehiog furnaee; aod

be~io

" ilh a gemle fire 10 heat Ihe erue,ble equally.

Wheo

~rfeoie.,1

vapour! begio tOafeeod from Ihl eru·

eible, raife the fi re i!Omedi" dy fo as 10 melt Ihe mix·

ture. Examioe whelher or 00 Ihe maller beIhoroughly

melled, by iOHodueiog ao iroo wire ioto Ihe erueible;

aod if Ihe fufioo be perfe<'t, take lhe erucible OU I of Ihe

furnaee. Lel il eool; break il; aod you will fiod io il

a regulus of a while aod li,id melal/ie eolour, very

brin le, feareely bard, but ralher friable.

1'0dijlil Ihe Nilroul Aeid

the ¡nlcrpifrtion

Arfo·

lIie. Blue

Aqua Fonis.

PULV ERISE finely aoy quaolily you pIcare of relioe.!

fah.pme. Mix il aeculalely wilh an equal \Veight of

while eryUdl/ioe arfeme ",ell pulverifed, or elfe wilh very

while aod very fioe flowers of arfeoie. PUl Ihis mixlure

ioto a gl,¡Cs

r~ton,

Iw'iog ooe half of il emply. Sel

yOllr reton io a

re,·er~eratio.g

f?rnace; aPl'ly

reeei.ver,

b.viog a rmall hole dullcd 10

tl,

aod eoolalOlog a l'ltle

fillered raio.\Valer ; lute Ihe reeeiver 10 lite relon witll

(liA· lule. Regio "ilh pUllinl: tIVO or Ihree f!Oall "ve

eoals in Ihe afh ·hole (If Ihe funMee, and repl.,ce IheOl

wilh olhers " heo Ihey are rcady10 COOUI. (ju onIhus

w.trmiog yOllr verrcls by iofeof,ble degrees, aod pUl 00

eOdls io Ihe firc·plaee lill Ihe reton 1>e&ill

be very

warm. YOII \ViII (000fee Ihe reeeiver ¡'lIed IVilh I'apour!

of a d. rk r"d, ioelioing 10 a ruOel eolour. Wilh

bit

of IlIle fiop Ihe lillle hole of Ihe reeeiver. Th, "apollrs

\ViII be eooJeofed io Ihe water of Ihis velfcl , arod gi," il

very fioe blue eoloor,

Ih~1

will gruIV deepe! aod deep·

er as Ihe diflil/dlioo advaoees. If yOllr ¡¡dl.pelre WdS

001very dry, fome d,ops of aeid \ViII .Ifo eume over,

ao,l falliog fromIhe oofe of Ihe relon mix wilh Ihe wa·

ler io Ihe reeei" er. Coolioue youl dillillalion, iRerea·

fi ng tI,e fi,e lillle by lillle as il advaoces, bUI ex·

e<eding flnwl)'1 lill you fee Ihll IVheo Ihe reIOn is

red·hol oOlhiog more comes off; and Iheo lel your l'eC·

fd~

eool.

Wh. o Ihe "elfcls areeold , uolllle Ihe reeeiver,

~od

expedilioufl y

rou c. o pour Ihe blue

aquafortil

il coo·

laios iOlo a

eryfl~1

bOllle; whieh you mu(l real hermeli·

c;1I)',

beeaufe this eolou r difappears io , Ehon lime wheo

Ihe liquor lakes airo You will fiod io Ihe relon • while

faline mafs moulJed io ils bOllom, aod fome flo\Vers of

arfeoie fublimed 10 ils upper eavity, aod iolO ils oeek.

Puh'erife Ihe falioe mafs, aod dilfolve it io WJrm wa·

ler. Fiher the folulioo, io order 10 feparate fome arfe·

oiC'al parlS lhal wil/ be lefl 00 the fiher. Lellhe fi her·

ed liquor elaporale of ilfdf in Ihe opeo , ir; ",heo il is

fufficicotly evapomed, ery(lals will nlOOI io il reprefeol'

iog quadraogular pri fllls lermioaled

eaeh extrellli lY by

pyramids Ihal are alfo

quadrangul.tr.

TI,efe ery(lals will

be io eoofuf,d heaps

Ihe bollom of Ihe velfel: Over

Ihem" ill be olher ery(l,ls io Ihe form of needles; •

(~.

lioevegelalion ereepiog aloog Ihe fides of Ihe ,'.lfel ; and

Ihe furfaee of Iheliquor ",ill be obfeured by a Ihio dufiy

pellicle.

ro aMa"jJte Nitre

Arjcnie.

r.~

ELT

io a erueible the oiue you iOleod 10 alkahfale.

Whco il is mehed, and moderm ly red, proje<'t upoo it

IIVO or Ihree pioehes of pull'CfiCed arfeoie. A coofider·

able effervefeeoee

~od

ebullitioo will immedimly bepro·

dueed io Ihe elucible, aneoded wilh a oolfe I,ke Ihal

whieh oilre makes "heo il delooms ",ilh ao ioflammable

matrero Al lhe fa me lime a Ihiek fmoke \ViII rife, whi..h

al fi,(I "ill fmell like garliek, Ihe odollr pceultar 10 "fe·

ntC;

il IVill alCo fmdl .fler\Vards lile fpirit of oitre.

Wltco Ih, dfcrv&eoce io Ihe erueible is over, IhrolV

~gain

upoo Ihe nitre as mueh pulverired arfeoie as you

ciid Ihe fidl lime; aod all Ihe fame pheoomeoa will be

repeatcd. Conllnue Ihus thlOwing io arfeoie io fm.1I

pareels, lill il prutluee 00 more effervefceoce; uking

care 10 fitr Ihe

man~r ~I

every proje<'t,oo "illt an iroo

"'tre, Ihe betler lO lIIix the II'hole

lo~efher.

Theo

inal,lfc luur (¡re, and mell whal rem.,os. Kt<p

Ihl)S io fufiJlo for a quamr of ao hour, aod Iheo lake

Ihe erueible OUI of lite fire.

will coouio

oitre

al·

kdltfed by arr,nic.