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

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            <p type="main">
              <s id="s.000482">
                <pb pagenum="99" xlink:href="010/01/107.jpg"/>
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            </p>
            <p type="margin">
              <s id="s.000483">
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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>
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            <p type="margin">
              <s id="s.000484">
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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>
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            <p type="main">
              <s id="s.000485">
                <emph type="center"/>
              PROP. XLIV.
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            <p type="main">
              <s id="s.000486">
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              Ratione mechanica à grauiori fluido celeriùs idem mobile
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              ſursùm exprimitur, quàm à fluido minùs graui.
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                <emph.end type="center"/>
              </s>
            </p>
            <p type="main">
              <s id="s.000487">HViuſmodi difficultates omninò vitantur effu­
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              giunturque, ſi certitudinem, & neceſſitatem
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              ex principijs mechanicis pendentem ſequamur, ſci­
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              licèt poſita ſolummodò grauitate in omnibus cor­
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              poribus ſublunaribus; neceſsè eſt vt
                <expan abbr="grauiſſimũ">grauiſſimum</expan>
              flui­
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              dum hydrargyri maiori impetu ſursùm per extruſio­
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              nem impellat lignum, quàm aliud
                <expan abbr="fluidũ">fluidum</expan>
              minùs gra­
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              ue, vt eſt aqua, ſicuti in bilance pondus vnius vnciæ
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              maiori velocitate ſursùm impellitur à maiori preſ­
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              ſione contraria ponderis decem librarum, quàm à
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              minori compreſſione ponderis vnius libræ. </s>
              <s id="s.000488">Demon­
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              ſtratio verò huius rei ſuo loco exponetur, ſed inte­
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              rim ſi effectus omnes qui obſeruantur in hiſce corpo­
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              ribus aſcendentibus ijdem prorsùs ſunt, & ijſdem̨
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              legibus mechanicis fiunt, ac ſi omnia corpora gra­
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              uia fuiſſent, ſed inæquali grauitate donarentur, &
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              præterea in ijs non apparet phenomena motus fieri
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              ea ratione, quæ requireretur ſi præter grauitatem̨
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              reperiretur quoque aliud principium contrarium le­
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              uitatis: igitur concedendum eſt ſola grauitate natu­
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              ram operari, neque leuitatem vllam exigere. </s>
            </p>
            <p type="main">
              <s id="s.000489">Contra euidentiam harum rationum non deſunt,
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              qui difficultates, & ſubterfugia afferant pro
                <expan abbr="retinẽ-da">retinen­
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                da</expan>
              ſuæ poſitionis in ueriſimilitudine; aiunt enim li-</s>
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          </chap>
        </body>
      </text>
    </archimedes>
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