Descartes, René, Renati Des-Cartes principia philosophiae

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    <archimedes>
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          <chap>
            <p type="main">
              <s>
                <pb pagenum="83"/>
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              apparituras quàm appareant Jupiter & Saturnus è
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              Terrâ conſpecti; nec fortè etiam Solem majorem viſum
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              iri, ſi reſpiceretur ex Fixis, quàm Fixae nobis Terrâ
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              videntur: atque idcirco, ut ſine praejudicio partes
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                <arrow.to.target n="marg589"/>
              mundi aſpectabilis inter ſe comparemus, cavendum
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              eſſe ne Lunam, vel Terram, vel Solem magnitudine
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              Stellas ſuperare arbitremur. </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg585"/>
              IV.
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              De phaenomenis, ſive
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              experimentis; & quis
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              eorum uſus ad philo­
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              ſophandum. </s>
            </p>
            <p type="margin">
              <s>
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              20</s>
            </p>
            <p type="margin">
              <s>
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              25</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg588"/>
              rituram eſſe, niſi ut
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              Planetam, Jove aut
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              Saturno minorem. </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg589"/>
              5</s>
            </p>
            <p type="main">
              <s>
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                <lb/>
              Differunt autem inter ſe Stellae, non modò quòd
                <lb/>
              unae aliis ſint majores; ſed etiam quòd quádam pro­
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                <arrow.to.target n="marg591"/>
              priâ luce fulgeant, aliae verò tantúm alienà. </s>
              <s>Ut in­
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              primis de Sole dubium eſſe non poteſt, quin lucem
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              quâ oculos noſtros perſtringit, in ſe habeat: neque
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              enim tantam ab omnibus Fixis ſimul ſumptis mutuari
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              poteſt, cúm ipſá tantam ad nos non mittant, nec
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              tamen à nobis magis diſtent quàm à Sole; ac nullum
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              aliud corpus apparet magis radioſum, à quo illam
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              accipiat: ſi quod autem eſſet, procul dubio appareret. </s>
              <s>
                <lb/>
              Idem de omnibus Stellis fixis facilè credetur ab iis,
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              qui conſiderabunt quàm vividos radios vibrent, ac
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                <arrow.to.target n="marg593"/>
              quantum à nobis & à Sole ſint remotae: ſi enim ali­
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              cujus Ste1lae fixae tam vicini eſſemus quàm Solis, cre­
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              dibile e:ſt eam ipſo non minorem, nec minús lucidam
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              eſſe apparituram. </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg590"/>
              IX.
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              Solem & Fixas propriâ
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              luce fulgere. </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg591"/>
              10</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg592"/>
              15</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg593"/>
              20</s>
            </p>
            <p type="main">
              <s>
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                <lb/>
              Contrà verò Lunam videmus, eâ tantum parte
                <lb/>
                <arrow.to.target n="marg595"/>
              ſplendere quam Soli habet obverſam; unde cogno­
                <lb/>
              ſcimus illam eſſe proprio lumine deſtitutam, & tantùm
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              radios à Sole acceptos verſús oculos noſtros refle­
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              ctere. </s>
              <s>Quod idem etiam de Venere perſpicillorum ope
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              obſervatur. </s>
              <s>Idemque de Mercurio, Marte, Jove &
                <lb/>
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              Saturno non difficulter perſuadetur, ex eo quòd eo­
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              rum lumen obtuſius ſive placidius ſit quàm Fixarum, </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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