Casati, Paolo
,
De igne dissertationes physicae
,
1686
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Quomodo Ignis accendatur.
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ſit carbonum Sulphur atque Spiritum concitari in motum, adeo-
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que particulas diſſolui, res videtur carere diſſicultate. </
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<
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ſuperioribus diebus innuebam ex Ariſtotele Probl.</
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<
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<
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<
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<
s
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xml:space
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">*vix illa eliquant, quæ facilè tranſmeant, contrà celerrimè diri-*
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*munt, quæ per vim ſe intrudunt,* id quoquè in vſtione dicendum
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videtur, videlicet igniculis commotis exarſionem promoueri non
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poſſe, ſi illis pateat multo facilior exitus ad auolandum, quàm
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aditus in poros corporis comburendi, ſiue id ex meatuum angu-
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ſtiâ, ſiue ex igniculorum paucitate contingat: </
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<
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">Fieri ſiquidem po-
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teſt, vt amplior quidem ſit exitus, quàm meatuum oſcula, mul-
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titudo tamen, aut vehementia igniculorum ſibi ipſa moram in-
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ferat, ne omnes ſimul erumpant, adeoque interea, dum in mo-
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liendâ eruptione momentum temporis teritur, igniculi aliqui ſe
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per vim in poros corporis anguſtiores intrudant, & </
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<
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ſoluendo, corporis eiuſdem igniculos ad ſimilem commotionem
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proritent. </
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<
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">Hinc quia ſingulorum puluiſculorum pori exiliores ſunt
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intercapedine, qua puluiſculi ipſi diſiunguntur, igniculi proſi-
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lientes ex puluiſculis illis, quos primùm proxima pruna incendit,
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cum pauci ſint, facillimè permeant per huiuſmodi interualla, quin
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ſubeant poros aliorum puluiſculorum, qui propterea non accen-
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duntur. </
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<
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">Quando verò ceruſſa permiſta eſt carbonum puluiſculis,
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illa plumbeam adhuc naturam redolens, virtute igniculorum à
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candente prunâ tranſmiſſorum liquata complectitur puluiſculos
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aliquot carbonum, adeò vt ab ardentibus iam puluiſculis erum-
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pentes igniculi, & </
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">in hos puluiſculos, quos ceruſſæ liquatæ parti-
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cula complectitur, incurrentes non valeant tranſmeare; </
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<
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rea carbonum puluiſculos incendant: </
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">ex quibus ſimiliter exilien-
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tes igniculi alias ſubinde ceruſſæ particulas proximas eliquant, & </
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eadem ratione carbonum comminutorum exarſionem propagant. </
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Ignis autem ampliſicatus & </
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">vberiùs peruagatur in-
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teriores acerui partes, nam carbonum plures puluiſculos cir-
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cumplexus illos incendit, & </
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<
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quat.</
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<
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">Hoc tamen animaduertendum, interiores illas cauernu-
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las non modò non ſemper obeſſe conſlagrationi, ſed etiam adiu-
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mente
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eſſe; </
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<
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">cum enim in eas deuenerint tumultuantes igniculi, ibi
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ſe liberiùs explicant, ac celeriùs agitati inuadunt proximas parti-
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culas maiore impulſu, faciliùſque diſſolutâ compage earum </
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