Descartes, René, Renati Des-Cartes principia philosophiae

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              <s>
                <pb pagenum="275"/>
              ellipticos, & globulos, per ipſos tranſire laborantes,
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              impingere in eorum parietes ſecundùm minores dia­
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              metros iſtarum ellipſium, ſicque vim habere illis fi­
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              guram circularem reſtituendi a. </s>
              <s>Et quamvis iſta vis in
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              ſingulis globulis ſecundi elementi exigua ſit, quia ta­
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              men aſſiduè quamplurimi per ejuſdem arcûs quam­
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              plurimos poros meare conantur, illorum omnium
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              vires ſimul junctae atque in hoc conſpirantes, ut
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              arcum reducant, ſatis magnae eſſe poſſunt. </s>
              <s>Arcus au­
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                <arrow.to.target n="marg1749"/>
              tem diu intentus, praeſertim ſi ſit ex ligno aliâve
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              materià non admodum durâ, vim reſiliendi paullatim
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              amittit: quia ejus meatum figurae, longo attritu parti­
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              cularum materiae per ipſos tranſeuntis, ſenſim ad ea­
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              rum menſuram magis & magis aptantur. </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg1743"/>
              CXXXII.
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              Cur ſit rigidum inſtar
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              arcûs; & generaliter,
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              cur rigida, cùm in­
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              flexa ſunt, ſponte re­
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              deant ad priorem
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              figuram. </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg1744"/>
              15</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg1745"/>
              20</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg1746"/>
              25</s>
            </p>
            <p type="margin">
              <s>
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              30</s>
            </p>
            <p type="margin">
              <s>
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              5</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg1749"/>
              10</s>
            </p>
            <p type="main">
              <s>
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              Hactenus naturas ae
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              ris, aquae, terrae, & ignis, quae
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              hujus globi, quem incolimus, elementa vulgò cenſen­
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              tur, ſimulque praecipuas eorum vires & qualitates ex­
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              plicare conatus ſum; ſequitur nunc, ut etiam agam de
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              magnete b. </s>
              <s>Cùm enim ejus vis per totum hunc Terrae
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              globum ſit diffuſa, non dubium eſt, quin ad generalem
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              ejus conſiderationem pertineat. </s>
              <s>Jam itaque revocemus
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              nobis in memoriam, particulas illas ſtriatas primi
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              elementi, quae ſuprà in tertiae partis articulo 87c, &
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              ſequentibus, ſatis accuratè deſcriptae ſunt. </s>
              <s>Atque id
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              omne, quòd ibi ab articulo 105 ad 109 d de ſidere I
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              dictum eſt, de Terrâ hîc intelligentes, putemus eſſe
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              multos meatus in mediâ ejus regione, axi parallelos, </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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