Casati, Paolo
,
De igne dissertationes physicae
,
1686
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De ignis loco.
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maticâ Boylæâ attinet, difficultas ducendi ſpiritum oritur ex eo,
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quod aër per vim rarefactus non ſolùm non attrahitur in pulmones
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(detrectans fortaſſe raritatem maiorem, quam ſubire neceſſe eſſet,
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niſi eleuatus thorax tantundem ſpatij acquirat, quantum decedit
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ſpiritui, quem animans haurit) ſed ſe contrahens attrahit ex
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animalis pulmonibus ſpiritum, quem ibi reliquum inuenit: </
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<
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xml:space
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clusâ autem reſpiratione facilè animal perire ſatis notum eſt. </
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<
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xml:space
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tè in piſcibus exhauſtam aëre veſiculam obſeruarunt Academici
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Florentini; </
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<
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">aëre videlicet intrà machinam nimis raro attrahente
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aërem veſicæ incluſum. </
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<
s
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xml:space
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">In altiſſimis verò montium iugis aër qui-
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dem craſſus non eſt, neque per vim rarus, ſed animalis reſpira-
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tioni non congruit, quia ſæpè abundat halitibus nitroſis, aut ſimi-
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libus noxijs; </
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<
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">nam, vt & </
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<
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">Ciceroni innotuit, *animi pars redditur*
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*reſpirando, pars concipitur cordis ventriculo:</
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<
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xml:space
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">* nempe mixti cum
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ſanguine intra pulmones huiuſmodi halitus per arteriam venoſam
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ad cor delati illud lædunt. </
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<
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xml:space
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">Quàm ſępè autem in infimo hoc aëre
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idem experimur? </
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<
s
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xml:space
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">vbi potiſſimùm teterrimi quidam odores cogunt
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applicito naribus linteolo peſtem illam aliquâ tandem ratione
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auertere, & </
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<
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xml:space
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">noxij ſpiritus, quos haurimus, ſtomachum mouent, at-
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que, ſi cor penetrent, etiam aliquando necem intuliſſe poſſem non
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vnico exemplo oſtendere. </
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<
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xml:space
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">Quid autem porrò?</
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">Dand. </
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">Pluræquidem ad aëris grauitatem atque preſſionem ad-
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ſtruendam congeruntur argumenta, ſed tanquam minoris mo-
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menti diſſimulanda. </
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>
<
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xml:space
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">Quid enim afferam effoſsâ terrâ aërem, vtpote
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grauem, deſcendere in ſcrobem? </
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<
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xml:space
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">Quaſi vis eadem, quæ terram in
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aëris locum attollit, nequeat aërem impellere in ſpatium à terrâ re-
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lictum, factâ locorum commutatione faciliùs, quàm aëris com-
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preſſione, relictâ ſcrobe prorſus inani. </
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<
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xml:space
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">Aëris grauitatem non in-
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fert diminutum ferè ſeſcunciâ globi Magdeburgici pondus poſt
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diuturnam exugentis antliæ agitationem: </
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>
<
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xml:space
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">Sed quia aër in globo
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rarus factus eſt leuior aëre communi, qui globum priùs implebat,
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moles ex vitro eodem graui, & </
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<
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">ex aëre raro leui compoſita, eua-
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ſit ſecundùm ſpeciem minùs grauis, ac priùs. </
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<
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xml:space
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">Neque auctum ex
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intruſo aëre pondus follis pugillatorij, argumentum eſt grauita-
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tis aëri communi tribuendæ: </
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<
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xml:space
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">Sed conſtipatus aër ſecundùm ſpe-
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ciem grauior aëre communi componit cum alutâ molem in ſpe-
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cie grauiorem. </
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>
<
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xml:space
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">Illud ſcilicet infirmum eſt, quo probare nituntur
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leuem non eſſe aërem, ſed grauem, dum ſic arguunt; </
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