Agricola, Georg
,
De re metallica Libri XII, Quibus Officia, Instrumenta, Machinae, ac omnia ...
,
1556
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<
archimedes
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<
text
>
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body
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<
chap
id
="
N10018
">
<
p
id
="
N14AF4
"
type
="
main
">
<
s
id
="
N14D18
">
<
pb
pagenum
="
186
"
xlink:href
="
001/01/196.jpg
"/>
conficitur ex tertij generis lapidibus, qui in ardentes fornaces coniecti faci
<
lb
/>
le liqueſcunt candidis & puris atque comminutis: cum eius enim pulueris ſe
<
lb
/>
muncia permiſcentur ſpumæ argenti fuluæ, item comminutæ, unciæ duæ:
<
lb
/>
quæ miſtura inijcitur in catillum fictilem eius capacem: ac ſub tegulam
<
expan
abbr
="
ardẽtis
">ar
<
lb
/>
dentis</
expan
>
fornaculæ collocatur. </
s
>
<
s
id
="
N14D2E
">Cùm autem aquæ inſtar fluxerit, quod ei horæ
<
lb
/>
dimidio ſpacio accidit, ex fornacula exempta effunditur in aliquem
<
expan
abbr
="
lapidẽ
">lapidem</
expan
>
:
<
lb
/>
ea temperatura, ubi refrixerit, uitri ſimilis eſſe apparebit: quæ rurſus commi
<
lb
/>
nuitur. </
s
>
<
s
id
="
N14D3B
">Iſtiuſmodi uerò puluis qualicunque uenæ metallicæ, quæ, cùm eam
<
lb
/>
experimur, non facile liqueſcit, inſpergitur & recrementum exſudabit. </
s
>
<
s
id
="
N14D40
">Alij
<
lb
/>
in locum ſpumæ argenti cinerem plumbi ſubſtituunt, qui ſic conficitur. </
s
>
<
s
id
="
N14D45
">In
<
lb
/>
plumbum, in catino liquefactum, conijcitur ſulfur: et mox quadam quaſi cu
<
lb
/>
te tegitur: qua ſublata rurſus inijcitur ſulfur, rurſuſque cutis nata detrahitur:
<
lb
/>
quod ſæpius fit, et quidem, donec plumbum in puluerem reſolutum fuerit. </
s
>
<
s
id
="
N14D4E
">
<
lb
/>
Sed ualens additamentum
<
expan
abbr
="
compoſitũ
">compoſitum</
expan
>
eſt quod conficitur ex halinitri præ
<
lb
/>
parati, ſalis liquati, recrementorum uitri, fecis uini aridæ, ſingulorum uncia,
<
lb
/>
ſpumæ argenti triente, uitri in puluerem triti beſſe, hoc additamentum ad
<
lb
/>
uenam, quæ par pondus habeat, adiectum eam liquefacit. </
s
>
<
s
id
="
N14D5C
">Valentius uerò
<
lb
/>
conſtat ex paribus portionibus fecis albi uini ſiccæ, ſalis communis, halini
<
lb
/>
tri præparati, quæ tria ſimul in olla, argenti ſpuma intrinſecus obducta, tor
<
lb
/>
rentur uſque dum puluis inde fiat candidus: cum quo tantundem ſpumæ ar
<
lb
/>
genti commiſcetur. </
s
>
<
s
id
="
N14D67
">Huius uerò miſturæ pars unà cum duabus uenæ expe
<
lb
/>
riendæ partibus permiſcetur. </
s
>
<
s
id
="
N14D6C
">Quo ualentius fit ex nigri plumbi cinere, hali
<
lb
/>
nitro,
<
expan
abbr
="
auripigmẽto
">auripigmento</
expan
>
, ſtibio, fece ſicca aquarum, quibus aurifices aurum ab ar
<
lb
/>
gento ſeparant: ſed nigri plumbi cinis conficitur ex plumbi libra, & ſulfuris
<
lb
/>
libra: plumbeo malleo percuſſum dilatatur: atque alterius bractea, alterius ſul
<
lb
/>
fur inijcitur in catinum uel ollam, & ſimul torrentur uſque dum ignis ſulfur
<
lb
/>
conſumat & plumbum in cinerem uertat. </
s
>
<
s
id
="
N14D7D
">Halinitri uerò comminuti libra
<
lb
/>
cum auripigmenti item in puluerem triti libra commiſcetur, & in patina fer
<
lb
/>
rea coquuntur donec liqueſcant: poſtea effunduntur, & refrigerata iterum
<
lb
/>
in puluerem conteruntur. </
s
>
<
s
id
="
N14D86
">Stibij autem libra & fecis ſiccæ bes alternatim in
<
lb
/>
ijciuntur in catinum, & coquuntur uſque ad eum finem dum maſſula inde fi
<
lb
/>
at: quæ ſimiliter reſoluitur in puluerem: huius pulueris bes & plumbei cine
<
lb
/>
ris libra, itemque pulueris ex halinitro & auripigmento facti libra permiſcen
<
lb
/>
tur, & ex eis conficitur puluis: cuius una pars ad duas uenæ partes addita
<
expan
abbr
="
eã
">eam</
expan
>
<
lb
/>
liquefacit, & à recrementis purgat. </
s
>
<
s
id
="
N14D97
">At ualentiſſimum eſt quod habet ſulfu
<
lb
/>
ris drachmas duas, & recrementi uitri totidem, ſtibij, ſalis ex urina decocta
<
lb
/>
confecti, ſalis
<
expan
abbr
="
cõmunis
">communis</
expan
>
liquati, halinitri præparati, ſpumæ argenti, atramen
<
lb
/>
ti ſutorij, fecis uini ſiccæ, ſalis ex anthyllidis cinere facti, ſiccæ fecis aquarum
<
lb
/>
quibus aurum ab argento aurifices ſeparant, aluminis igne reſoluti in pul
<
lb
/>
uerem ſingulorum
<
expan
abbr
="
ſemunciã
">ſemunciam</
expan
>
, camphoræ unà cum ſulfure in puluerem triti
<
lb
/>
<
expan
abbr
="
unciã
">unciam</
expan
>
: huius miſturæ pars dimidia uel integra, prout hoc res ipſa poſtulat,
<
lb
/>
<
expan
abbr
="
cũ
">cum</
expan
>
parte una uenæ & duabus
<
expan
abbr
="
plũbi
">plumbi</
expan
>
partibus permiſta inijcitur in
<
expan
abbr
="
catillũ
">catillum</
expan
>
fi
<
lb
/>
ctilem, & miſtura puluere uitri Venetiani comminuti conſpergitur: quæ
<
lb
/>
cùm ſeſquihora, uel duabus horis cocta fuerit, maſſula in fundo catilli reſi
<
lb
/>
debit, à qua mox plumbum ſeparatur. </
s
>
<
s
id
="
N14DC4
">Eſt etiam
<
expan
abbr
="
additamẽtum
">additamentum</
expan
>
quod ſulfur, </
s
>
</
p
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body
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