Casati, Paolo, Terra machinis mota : dissertationes geometricae, mechanicae physicae hydrostaticae

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    <archimedes>
      <text>
        <body>
          <chap>
            <pb xlink:href="018/01/210.jpg" pagenum="196"/>
            <p type="margin">
              <s>
                <margin.target id="note92"/>
                <emph type="italics"/>
              XCII
                <lb/>
              Moli
                <expan abbr="cõ">com</expan>
              po­
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              ſitæ ſi quid
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              additur aut
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              dematur, e­
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              ius grauitas
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              ſpecifica mu
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              tatur.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>Sed ſi placeat grauitatem illam augere,
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              ſtatuamus tres illos quadrantes non argillæ,
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              ſed Magnetis grauitatem habere; eſt autem
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              magnetis grauitas 26 ad aquæ grauitatem
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              5 1/3 in aëre: quare magnetis grauitas in aquâ
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              eſt 20 2/3, & grauitas in igne 120 2/3; ideòque
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              grauitas trium quadrantum in aquâ, cum̨
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              ex magnete conſtent, eſt 62, & leuitas
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              conueniens vni quadranti ignis in aquâ eſt
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              ——100: igitur leuitas globi in aquâ eſt
                <expan abbr="tãtùm">tantùm</expan>
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              —— 38. Quando verò totus globus ex aquâ
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              pariter & terrâ conflatus accipitur, iam au­
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              ctâ grauitate, alia eſt ſpecifica totius globi
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              grauitas, qualis eſſet ex. </s>
              <s>gr. grauitas mar­
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              moris aut alia, cum non videatur aſſumi
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              poſſe tanquam mera argilla, ſi tres quadran­
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              tes ex magnete ſtatuantur. </s>
            </p>
            <p type="main">
              <s>
                <emph type="italics"/>
              Guld.
                <emph.end type="italics"/>
              </s>
              <s> At ſi globo non reſtituatur aqua,
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              quæ in latus ſeceſſit, augebiturnè grauitas
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              ſpecifica molis, quæ ex tribus quadrantibus
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              magnetis, & vno quadrante ignis conflatur? </s>
            </p>
            <p type="main">
              <s>
                <emph type="italics"/>
              Merſ.
                <emph.end type="italics"/>
              </s>
              <s> Niſi quid addatur aut dematur,
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              fieri non poteſt vt grauitas ſpecifica variatio­
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              nem ſubeat, </s>
            </p>
            <p type="main">
              <s>
                <emph type="italics"/>
              Guld.
                <emph.end type="italics"/>
              </s>
              <s> Nobis igitur conuenit. </s>
              <s>Quapropter
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              ſi globi leuitas in aquâ eſt——38, per 4 nu­
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              merum partium diuidatur, & erit leuitas
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              ſpecifica terreni globi in aquâ——9 1/2; cui ſi </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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