Fabri, Honoré, Dialogi physici in quibus de motu terrae disputatur, 1665

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              mentis edoctus in meliorem ſententiam deſcendi; & verò longè diffici­
                <lb/>
              liùs educitur ex corpore ſicco illa materiæ copia, quæ ad occupandum to­
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              tum illud vacuum neceſſaria eſt; ſed hæc nihil ad præſentem quæſtionem;
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              accedit, quod embolus ſino corio, Cylindro cavo rectè non congruit; co­
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              rium autem poroſum eſt & ſpongioſum, at que adeò multum aëra, multum­
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              que prædictæ materiæ continet. </s>
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            <p type="main">
              <s id="s.002481">
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              Auguſtin.
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              <s id="s.002482"> Sed quæſo te, quando altiſſima eſt fiſtula, vnde tanta copia il­
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              lius materiæ, qua ſcilicet ſegmentum CD repleatur, quando longiſſi­
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              mum eſt? </s>
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            <p type="main">
              <s id="s.002483">
                <emph type="italics"/>
              Antim.
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              </s>
              <s id="s.002484"> Demus hoc, nec enim vnquam probatum eſt, in longiſſimis
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              illis fiſtulis; Demus, inquam; cavæ ſuperficies vitri ſunt vt altitudines; item
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              labentis Mercurij quantitates, ſeu Cylindri ; quid mirum ergo, ſi in eadem
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              proportione materia dilatabilis ſuppeditetur? </s>
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            <p type="main">
              <s id="s.002485">
                <emph type="italics"/>
              Chryſoc.
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              </s>
              <s id="s.002486"> Nunquid fortè meliùs diceres, ſi partibus dumtaxat aëris inter
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              Mercurium & cavam ſuperficiem fiſtulæ interceptis hoc tribueres? </s>
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            <p type="main">
              <s id="s.002487">
                <emph type="italics"/>
              Antim.
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              </s>
              <s id="s.002488"> Non ſunt haud dubiè aëris partes inter partes Mercurij, nec
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              etiam inter Mercurium & dictam ſuperficiem cavam, ſed tantùm partes
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              illius materiæ dilatabilis, quæ cadente Mercurio inde facilè educitur: &
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              verò cùm aër, ſi quis intruſus ſit, ita ſuum locum occupet, vt inclinata fi­
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              ſtula Mercurius totam cavitatem CD non occupet, ſed ſpatium neceſſa­
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              rium aëri relinquat; vbi Mercurius aſſurgens nullum ſpatium vacuum re­
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              linquit, vt aliquando accidit, nullus profectò aër ineſt. </s>
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            <p type="main">
              <s id="s.002489">
                <emph type="italics"/>
              Auguſtin.
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              </s>
              <s id="s.002490"> Legi apud Autorem ſupra laudatum, ſi fiſtula multiplici ſuc­
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              cuſſu fatigetur, dum in eam Mercurius infunditur, ſegmentum Mercurij
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              extantis inde altius fore; immò ſi ferrum candens admoveatur lateri fi­
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              ſtulæ CI, aſcendunt quædam aëris bullulæ; aër igitur Mercurio inerat:
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              idem in aqua fieret. </s>
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            <p type="main">
              <s id="s.002491">
                <emph type="italics"/>
              Antim.
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              </s>
              <s id="s.002492"> Illæ bullæ non ſunt aëre plenæ, ſed vel humore rarefacto, qui
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              multus ineſt Mercurio, vel illa materia tenui, quæ facilè rareſcit; quan­
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              quam dicerem potiùs, humorem rarefactum; vt enim materiam illam te­
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              nuem ad elementum aëris propiùs accedentem, vtpote neceſſariam ad
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              multos naturæ vſus agnoſco, ita & admitto humorem quendam ſubtilem,
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              ad elementum aquæ proximè accedentem, ſine quo fortè frigoris, effe­
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              ctus explicari non poſſunt: ſed veni quæſo ad alias, quæ tibi ſubortæ ſunt
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              difficultates. </s>
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            <p type="main">
              <s id="s.002493">
                <emph type="italics"/>
              Auguſtin.
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              </s>
              <s id="s.002494"> Illa materia, quæ poſt deſcenſum Mercurij ſegmentum
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              CD obtinet, eſt rarior & levior aëre; igitur aër extrinſecus per medium
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              Mercurium in illam gravitat; ſi ergo hæc vis gravitationis Cylindri aëris
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              extrinſeci major eſt vi gravitationis Mercurij extantis CI, illam haud
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              dubiè ſuperabit, attollet que Mercurium; idem faciet, ſi æqualis ſit; acce­
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              dente ſcilicet vi tenſæ materiæ; ſi denique minor eſt, cur non vincitur deſ­
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              cenditque Mercurius infra C? </s>
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            <p type="main">
              <s id="s.002495">
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              Antim.
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              </s>
              <s id="s.002496"> Licèt hæc omnia darem, nihil tamen inde contra meam hy­
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              potheſim; ſupponamus enim exempli gratia, vim Cylindri aëris extrin­
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              ſeci pluſquam centuplo majorem vi gravitationis Mercurij CI; non po-</s>
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