Borelli, Giovanni Alfonso, De motionibus naturalibus a gravitate pendentibus, 1670

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          <chap>
            <p type="main">
              <s id="s.000613">
                <pb pagenum="123" xlink:href="010/01/131.jpg"/>
              communis ſupra tenacitatem, &
                <expan abbr="cõſtipationem">conſtipationem</expan>
              ſpi­
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                <arrow.to.target n="marg152"/>
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              ritus vini; quæ, iuxtà Ariſtotelis aſſumptum,
                <expan abbr="maiorẽ">maiorem</expan>
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              tarditatem aſcendenti corpori affert denſitas aquæ,
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              ſcilicèt duplò maior, quàm ſit ea difficultas, qua à
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              ſpiritu vini aſcenſus eiuſdem pilæ impeditur. </s>
              <s id="s.000614">Hinc
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              ſequitur, quòd velocitas eiuſdem pilæ B per aquam
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              ad eam quam habere poteſt per ſpiritum vini com­
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              poſita ſit ex duabus proportionibus, ſcilicèt ex pro­
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              portione differentiarum leuitatum eorumdem cor­
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              porum, quæ erit vt duo ad vnum, & ex propoſitio­
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              ne reciproca reſiſtentiarum eorumdem mediorum̨,
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              quæ ſe habet vt vnum ad duo, ſed proportio dupla,
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              & ſubdupla componunt proportionem æqualitatis,
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              igitur æquali velocitate aſcendet eadem veſica B
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              per aquam A, & per
                <expan abbr="ſpiritũ">ſpiritum</expan>
              vini O, quod eſt
                <expan abbr="euidẽ-tèr">euiden­
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                tèr</expan>
              falſum, & contra aſſertum eorumdem aduerſa­
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              riorum, ergo veſica aere plena non mouetur ſursùm
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              in fluido vi leuitatis poſitiuæ, quod erat oſtenden­
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              dum. </s>
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            <p type="margin">
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              Cap. 4. poſi­
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              tiuam leui­
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              tatem noņ
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              dari.</s>
            </p>
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              Cap. 4. poſi­
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              tiuam leui­
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              tatem noņ
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              dari.</s>
            </p>
            <p type="main">
              <s id="s.000617">Sed antequam vlterius procedamus,
                <expan abbr="debẽt">debent</expan>
              ad exa­
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              men quoque reuocari aliæ obiectiones, quæ ab au­
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              thoribus clariſſimis afferuntur contra noſtram ſen­
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              tentiam. </s>
              <s id="s.000618">Et primò quidem conſiderabo argumenta,
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              quæ deſumuntur à pyramidali figura flammæ lucer­
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              næ, a qua, inquam, figura putant euidens
                <expan abbr="argumentũ">argumentum</expan>
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              deduci, quòd flamma ipſa ſursùm impellatur ab in­
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              terno principio leuitatis, ſicque ratiocinantur:
                <emph type="italics"/>
              Vi­
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              demus quieto, & tranquillo aere flammum ferri ſursùm
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              pyramidalitèr, cùm
                <expan abbr="tamẽ">tamen</expan>
              ſi per expresſionem hic motus fie-
                <emph.end type="italics"/>
              </s>
            </p>
          </chap>
        </body>
      </text>
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