Descartes, René, Renati Des-Cartes principia philosophiae

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              <s>
                <pb pagenum="178"/>
              quia materia vorticis ſ vertitur ab A per E verſusv, &
                <lb/>
              materia vorticis S ab A per E verſus I; iſtius autem
                <lb/>
              lineae pars 5 6 7 8 eſt ferè recta, quia materia vorticis in
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              quo eſt, ſupponitur gyrare circa axem XX. </s>
              <s>Et ſidera
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              ex unis vorticibus in alios hoc pacto migrantia
                <arrow.to.target n="marg1116"/>
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              Cometae: ipſorumque omnia phaenomena hîc expli­
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              care conabor. </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg1112"/>
              CXXVII.
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              De continuatione mo­
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              tùs Cometae per di­
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              verſos vortices. </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg1113"/>
              25</s>
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            <p type="margin">
              <s>
                <margin.target id="marg1114"/>
              30</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg1115"/>
              5</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg1116"/>
              5</s>
            </p>
            <figure id="fig47" number="48"/>
            <p type="main">
              <s>
                <arrow.to.target n="marg1117"/>
                <lb/>
              In primis obſervatur illos ſine ullâ regulâ nobis
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              notâ, unum per hanc, alium per illam coeli regionem
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              tranſmeare, ac intra paucos menſes aut dies
                <arrow.to.target n="marg1118"/>
              con­
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              ſpectu noſtro abire, nec unquam plus, aut certè non
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              multò plus, ſed ſaepe multò minùs quàm mediam coeli
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              partem percurrere. </s>
              <s>Ac quidem cùm primùm apparere
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              incipiunt, ſolere ſatis magnos videri, nec poſtea valde
                <lb/>
              augeri, niſi cùm valde magnam coeli
                <arrow.to.target n="marg1119"/>
              percur­
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              runt; cùm autem deſinunt, gradatim ſemper imminui;
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              atque initio, vel ſaltem circa initia ſui motùs, videri
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              celerrim moveri, ſub finem autem lentiſſimè. </s>
              <s>Ac de
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              uno duntaxat memini me legiſſe, quòd circiter me­
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              diam coeli partem peragrârit: de illo ſcilicet
                <arrow.to.target n="marg1120"/>
              di­
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              citur anno 1475, primò tenui capite ac tardi motûs,
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              inter ſtellas Virginis apparuiſſe, ac paulò pòſt mirae
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              magnitudinis factus, per polum Borealem tam cele
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              riter inceſſiſſe, ut portionem circuli magni triginta
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              vel quadraginta graduum, unâ die, deſcripſerit; ac
                <arrow.to.target n="marg1121"/>
              </s>
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          </chap>
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