Casati, Paolo
,
De igne dissertationes physicae
,
1686
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De Flamma & Fumo.
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plicem tradit methodum, vt ſimilem lapidem acquiras. </
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<
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">Primò.
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<
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xml:space
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">Viui ſulphuris, Salnitri vocati repurgati (quod ſcilicet eſt ſine
<
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parte volatili) pari pondere, Caphuræ duplum, Nouæ Calci ad-
<
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datur, ac omnia mortario conterantur vſque adeò attenuata, vt
<
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in auram euolare poſſint. </
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>
<
s
xml:id
="
echoid-s6605
"
xml:space
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preserve
">Simul ſtrictè linteolo deligata conuol-
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uantur, teſtaceo vaſe claufa ſuper illitâ argilla, feruenti Sole de-
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ſiccentur: </
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<
s
xml:id
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echoid-s6606
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xml:space
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">figulorum imponantur fornaci; </
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>
<
s
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echoid-s6607
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xml:space
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">cumque figulinum vas
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fuerit excoctum (in quo maxima adhibenda eſt diligentia) in la-
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pidis duritiem coëunt, & </
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<
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">rediguntur: </
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<
s
xml:id
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echoid-s6609
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xml:space
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">extracta ad vſum miniſtran-
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tur. </
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<
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">Secundò. </
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<
s
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xml:space
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">Magnetem lapidem in ollam vel aliud conſimile
<
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vas conijce viuâ calce immerſum; </
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>
<
s
xml:id
="
echoid-s6612
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xml:space
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">meliuſque fuerit, ſi Colopho-
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niam adieceris cum calce pari. </
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>
<
s
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echoid-s6613
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xml:space
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preserve
">Cùm vas expleueris, figulari cre-
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tâ circumlito ſpiramento, fornaci immittito, alternis eadem pro-
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ſequendo, dum vehementer inalbuerit, & </
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>
<
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xml:space
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">torrefiat: </
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<
s
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xml:space
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">Cum opus
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fuerit, aquâ vel ſaliuâ ſuper infuſâ flammam eleuabit; </
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>
<
s
xml:id
="
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xml:space
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">qua ſopi-
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tâ, loco calido ad vſum recondito. </
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">Tertiò. </
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<
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">Sumatur Magnetis
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lapidis prænarrata calx, Salnitri ſæpè purgati quadruplum, æquali
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pondere Caphura, viui Sulphuris nondum ignem experti, & </
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>
<
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xml:id
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xml:space
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">Te-
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rebinthinæ reſinæ Oleum, & </
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<
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xml:space
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">vini fœcis concretæ, quam Tartarum
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dicimus. </
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<
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xml:space
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">Hæc omnia molâ vel pilâ trita cribrentur, quæ infracta
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ſunt, denuo terantur, cribrenturque. </
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<
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xml:space
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">Inſuper auſteri vini arden-
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tem aquam paratam habeas, eamque infundas, vt ſuperemineat. </
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Vitreo vaſe condito, & </
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">operculato, ne halitum expiret, fimo
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ſupponatur duobus vel tribus menſibus, denis viciſſim diebus in-
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nouando, donec mellis ſpiſſamentum imitetur, nec vllum diuiſio-
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nis indicium præbeat: </
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<
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xml:space
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">flagranti inde carbone inferueſcat, dum
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humiditas omnis auolet, & </
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<
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xml:space
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">penitus ſiccata in lapidem coëat. </
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<
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xml:space
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">Si
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hoc cognoueris, vas frange, & </
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<
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xml:space
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">exemptam iterum terito compo-
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ſitionem: </
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<
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xml:space
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">aquâ vel humore aliquo leuiter ſuperinfuſo, flamma eri-
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getur: </
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">& </
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<
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xml:space
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">inter omnes principem hæc ſibi vendicat locum, ſi aſſe-
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renti Portæ credimus. </
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<
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">An hiſce Authorum cogitatis (quæ
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non alijs ferè verbis, atque legerim, afferre placuit) ex-
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perimentum reſpondeat, fateor me ignorare: </
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<
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xml:space
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">obſeruo ta-
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men ſemper Calcem viuam adhiberi permiſtam materiæ ali-
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cui pingui & </
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<
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">oleoſæ, vt humore aqueo affuſo calx excite-
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tur, à cuius ſalibus irritatæ particulæ ſulphureæ erumpant
<
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in flammam. </
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