Casati, Paolo
,
De igne dissertationes physicae
,
1686
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De Ignis extinctione.
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illâ extinctâ fumum in tenui & </
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">continuo cylindro aſcendentem ad
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ſummum perueniſſe, & </
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<
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xml:space
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">indè per latera ad inferiorem vaſis par-
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tem ſe ſtitiſſe: </
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<
s
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">potuit ſcilicet pars humida fumi in receſſu con-
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creſcere, vbi minus eſt caloris, & </
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<
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">grauior fieri. </
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<
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lutè & </
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<
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">ſimpliciter rarefactum Recipientis aërem non dicerem,
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quippe qui adhuc integer nec diminutus implet ſpatium idem,
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quod antea occupabat, nec eadem materia maiores habet dimen-
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ſiones. </
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<
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">Contra verò res accidit, quando exercita antlia aëris
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partem è Recipiente exugit ad implendum in modiolo ſpatium
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ab embolo relictum; </
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<
s
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xml:space
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">qui enim reliquus eſt in Recipiente aër, ad illud
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implendum dilatatur, atque rareſcit, ideoque ſecundùm ſpeciem
<
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leuior eſt fumo; </
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<
s
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">quilicèt aliquando non ſubſequatur extinctio-
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nem flammæ, aliquando tamen *ſuperiori ellychnij parte poſt ex-*
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*tinctam flammam accenſâ permanente, tenuia, quæ exorieban-*
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*tur, fumi effluuia ſurſum baud longè aſcendebant, ſed dein poſt*
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*incertos aliquos vltro citroque motus de repente conciderunt.</
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<
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">* Prima
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videlicet fumi effluuia pereuntis flammæ veſtigijs inſiſtentia aſcen-
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debant, atque ponè vrgebantur à conſequentibus fumi particu-
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lis iuxta eandem directionem ex ellychnio erumpentibus: </
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">ſed quia
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fumus aëre circumfluo grauior erat, & </
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">igniculis deſtituebatur,
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deſcendebat occurrens alijs fumi particulis ſurſum exilientibus,
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à quibus repellebatur: </
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<
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">ex quo illa motuum viciſſitudo tan-
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tiſper oriebatur, dum effluuia aut omnino ceſſarent, aut
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languidiora non valerent deſcendentem fumum ab igniculis le-
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uioribus deſtitutum repellere: </
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<
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xml:space
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">tunc enim conciditfumus, vtpote
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grauior aëre rarefacto.</
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">Optimè ſanè de re literariâ meritus eſt Nobiliſſimus Vir
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ſuâ illâ Machinâ Pneumaticâ, cuius ope deprehendit aëremita
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poſſe rarefieri, vt non ſolùm bis millies ſeptingenties, ſed etiam
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tredecies millìes maius ſpatium occupet, quemadmodum narrat
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in Tractatu, cui titulum fecit, *Mira aëris etiam citrà calo-*
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*rem Rarefactio detecta.</
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">* Cum tamen de Rarefactione conſtet,
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valdè ambiguum relinquitur, qua demum ratione illa contingat:
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</
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<
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">Si enim diſtractis in diuerſa particulis interiectæ dicantur inanita-
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tes, erit in recipiente Vacuum tredecies millies maius Pleno: </
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">Si
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ad vitandum inane, aduocetur per vaſis poros Æther, non vti-
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que à rareſcente aëre attrahi dixerit ipſe Boyle; </
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<
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inſmodi tractio eiuſdem placitis conſentanea eſt; </
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