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

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="018/01/209.jpg" pagenum="195"/>
              ſpecificam tribuo; ideò intrà aërem conſi­
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              ſtit, nec vllum ſubeſt auolandi in ætherą
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              periculum. </s>
              <s>At ſublatis marium atquè flu­
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              minum aquis, quas in latus ſeceſſiſſe poni­
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              mus, reliquæ molis grauitas minor eſt; quia,
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              ſublatâ marium grauitate, ad ſolius terræ &
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              metallorum grauitatem leuitas ignis incluſi
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              & halituum habet maiorem Rationem, quàm
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              haberet ad grauitatem terræ ſimul & aquæ; ac
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              proinde cum maneant eadem corpora leuia,
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              & minuantur grauia, minor quoquè eſſe vi­
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              detur ſpecifica grauitas totius globi. </s>
              <s>Quem­
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              admodum ſi ex æreo vaſe aëris pleno aufe­
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              ram partem metalli, manente eodem aëre,
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              fit minor ſpecifica vaſis grauitas. </s>
              <s>Quamuis
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              autem ſublato vno globi quadrante, qui igni
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              tribuitur, & ſublatis marium, lacuumque,
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              & fluminum aquis, quæ ſupereſt moles ſit
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              minor tribus totius orbis quadrantibus, ac
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              proinde minor tribus quadrantibus molis,
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              quæ reſtat ſublatâ tantùm aquâ, mihi tamen
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              minutas quæſtiunculas non conſectanti ſatis
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              videbatur tribus quadrantibus molis reliquæ
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              argillaceam grauitatem tribuere; vt ſi fortè
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              grauitas iſta iuſto minor eſſet, compenſaretur
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              diminutâ ignis mole, quæ ſtatuebatur ſolùm
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              quadrans reliquæ molis, cum tamen eſſet 1/4
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              totius globi. </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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