Casati, Paolo
,
De igne dissertationes physicae
,
1686
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loco extrudere oporteret: </
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ſubinde diſſipatâ igniculos ſui iuris factos, qui collatis viribus ſe
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atque aërem ipſum immiſtum agitent celeriùs, quàm repelli va-
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leant à primò erumpentibus necdum omnimodam libertatem na-
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ctis igniculis, neceſſe eſt, intercluſo exitu, concitatam in ellychnio
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ſeditionem comprimi, flammamque ceſſare.</
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<
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<
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">Vix puto rem potuiſſe probabiliùs explicari, conſentit
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quippe cum experimento. </
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<
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">Nam cereolus accenſus Recipienti in-
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cluſus aliquandiu ſatis luculenter exarſit, deinde iuxta omnes ſuas
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dimenſiones flamma contracta eſt, & </
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<
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">quidem ad imam ellychnij
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partem, à qua deinde pauxillum aſcendit proximè extinguenda:
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</
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<
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apparuit lucida, & </
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<
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">poſt quinque circiter minuta fumi effluuium,
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rectâ furſum aſcendens, ei ſucceſſit. </
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<
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">Quod enim aliquandiu lu-
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culenter arderet cereolus, tribuendum eſt flammulæ tenuitati pro
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Recipientis amplitudine, cuius aër non niſi aliquantò longiore
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temporis ſpatio indigebat, vt igniculis repletus, atque commo-
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tus, erumpentis flammæ motui repugnaret, quæ nacta reſiſten-
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tiam, neque valens ſe adeò explicare, apparuit imminuta, craſ-
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ſioribus particulis minùs recedentibus à loco, ex quo emanabant,
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ideoque in imâ ellychnij parte apparentibus: </
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<
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">cumque primò ceſ-
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ſaret vehemens eruptio ſulphurearum particularum ad flammam
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neceſſaria, deſijt in imâ illâ parte apparere noua flamma, ſed,
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quæ iam eruperat flammula, pauxillum aſcendit: </
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<
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autem ellychnij accenſio permanſit, quia ſatis erat iam exci-
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tatis igniculis ellychnium permeare, & </
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vapore fumi.</
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<
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factum ſecundùm ſpeciem leuiorem fumo, ex hoc rectâ ſurſum
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aſcendente innotuit; </
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<
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">vel quia igniculi aliqui fortaſſe grauiores
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ſunt aëre, quem peruolitant, & </
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& </
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">terreni puluiſculi, qui aquam efficiunt lutulentam, aut parti-
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culæ Salis in aqua diſſoluti, eam efficiant grauiorem: </
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<
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">vel quia ſi
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quæ particulæ rareſcentes factæ ſunt leuiores, alias vaſis lateribus
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concluſas compreſſerunt, quæ propterea grauiores euaſere, adeò
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vt moles ex leuioribus & </
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ſpeciem ſit grauior fumo, cui idcirco rectus ſurſum motus conue-
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nit. </
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