Casati, Paolo
,
De igne dissertationes physicae
,
1686
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Diſſertatio Sexta.
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plurimum pendere exiſtimo. </
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<
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xml:space
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">Habent Romani, vt nôſtis, arenæ
<
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loco puluerem, quem Puteolanum (fortaſſe quia extrahitur è
<
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puteis in Arenariam deſcendentibus) vocant; </
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>
<
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xml:space
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">hic calci permiſtus
<
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tenaciſſimè copulat tophos, lateres, & </
s
>
<
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xml:space
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<
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acquirens. </
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<
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xml:space
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">Id miratus Belga neſcio quis artis Spagyricæ non igna-
<
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rus, vt ex Viro fide digno accepi, diſſoluit puluerem illum in ſua
<
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/>
principia, & </
s
>
<
s
xml:id
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xml:space
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">certam ſulphuris portionem arenæ permiſtam depre-
<
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hendit. </
s
>
<
s
xml:id
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xml:space
="
preserve
">Quare in patriam redux carbonem foſſilem (ſulphure pro-
<
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/>
cul dubio redundantem) comminutum, iuxta obſeruatam Ratio-
<
lb
/>
nem, arenæ permiſceri iuſſit optimo euentu, quem animo deſti-
<
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/>
nauerat. </
s
>
<
s
xml:id
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echoid-s5202
"
xml:space
="
preserve
">Hinc inferre licet validiorem calcem, ſi arena minimè
<
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/>
ſulphurea ſit, & </
s
>
<
s
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xml:space
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">cœtera omnia ſint paria, abundare maiori
<
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/>
ſulphuris copiâ, pro lapidis melioris naturâ, ac proinde cal-
<
lb
/>
cis calorem non omnino tribuendum igniculis in fornace con-
<
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/>
ceptis.</
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</
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<
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<
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xml:space
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<
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xml:space
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">Quod ad maiorem calcis viuæ iterum combuſtæ efficaci-
<
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tatem attinet, non videtur admodum difficile explicatu: </
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>
<
s
xml:id
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xml:space
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">vbi
<
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/>
ſcilicet calx è fornace exempta refrixerit, vtpote maximè ſicca,
<
lb
/>
facilè vnitur humido vapori, quo refertus eſt aĕr, præſertim quia
<
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/>
Sali nullo negotio coniungitur aqua; </
s
>
<
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xml:id
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xml:space
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">lapides autem ex ſale potiſſi-
<
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mùm & </
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>
<
s
xml:id
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xml:space
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">terrâ coagmentatos negare nemo poteſt. </
s
>
<
s
xml:id
="
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xml:space
="
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">Quapropter ſi
<
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/>
calx viua humorem huiuſmodi aqueum combiberit, vtique Sa-
<
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/>
lis diluti acrimonia retunditur: </
s
>
<
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xml:id
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xml:space
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">Nouâ igitur combuſtione diſſipa-
<
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tur vapor aqueus, & </
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<
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xml:space
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">Salinæ particulæ vim ſuam obtinent inte-
<
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gram, quam exercere non potuiſſent antè vſtionem. </
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>
<
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xml:id
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xml:space
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">Non diſſi-
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teor tamen etiam ſulphureas aliquas & </
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>
<
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xml:space
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">ſalinas particulas, immò
<
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etiam Spiritus ex Ignis materiâ exeuntes, addi in combuſtione:
<
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</
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>
<
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xml:space
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">Nam lateres nouos quantumuis frigidos ſi in vas aquâ plenum im-
<
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merſeris, non ſolùm bullas excitabit aqua (id quod fortaſſe aëri
<
lb
/>
poris incluſo tribui poſſet) ſed etiam incaleſcet, autſaltem inte-
<
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/>
peſcet; </
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>
<
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xml:space
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">id verò non niſi igniculis adhuc reliquis exfornacis incen-
<
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dio eſt adſcribendum. </
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>
<
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xml:id
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xml:space
="
preserve
">Simile quid lapidi in calcem excocto con-
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tigiſſe arbitror: </
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>
<
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xml:space
="
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">cum enim ita compacta ſit lapidis materia, vt
<
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vehementi fornacis igne non diſſipetur, quemadmodum cum ar-
<
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dent ligna, & </
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>
<
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xml:space
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">ea, quorum rara eſt textura, adeoque, licèt hu-
<
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mor lapidis elementa connectens expirauerit, maneat adhuc ea-
<
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/>
dem lapidis figura particulis vix cohærentibus (nam friabilis eſt
<
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/>
calx) plurimæ ſulphureæ & </
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>
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xml:space
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