Descartes, René, Renati Des-Cartes principia philosophiae

Page concordance

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              maculas, ut & totum aetherem ipſis circumſuſum, quo­
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              niam ejus partes ad motum minùs aptae ſunt quàm
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              globuli ſecundi elementi, ad tertium elementum re­
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              ferimus ". </s>
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              C.
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              Quomodo ex ipſis aether
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              circa Solem & ſtella
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              generetur. </s>
              <s>Huncque
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              aetherem & iſtas ma­
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              culas ad tertium ele­
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              mentum referri. </s>
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              25</s>
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              30</s>
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              Sed verò macularum productio vel diſſolutio à tam
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              minutis & tam incertis cauſis dependet, ut minimè ſit
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              mirandum, ſi quando nullae prorſus in Sole appareant,
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              vel ſi è contrà nonnunquam ſint tam multae, ut totum
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              ejus lumen obſcurent. </s>
              <s>Ex hoc enim quòd pauca aliqua
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              ex ramentis primi elementi ſibi invicem adhaereſcant,
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              ſit unius maculae rudimentum, cui facilè poſtea plura
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              alia junguntur, quae, niſi in priora illa impingendo
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              partem ſuae agitationis amitterent, ſibi mutuò non
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              poſſent adhaerere. </s>
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            <p type="margin">
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              CI.
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              Macularum productio­
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              nem & diſſolutionem
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              à cauſis valde incertis
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              pendere. </s>
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            <p type="margin">
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              5</s>
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              10</s>
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              Notandumque eſt maculas iſtas, cùm primum ge­
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              nerantur, eſſe corpora molliſſima & rariſſima, ideòque
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              facilè frangere impetum ramentorum primi elementi,
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              quae in ipſas impingunt, & illa ſibi adjungere. </s>
              <s>Paula­
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              tim autem poſtea interiorem earum ſuperficiem, con­
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              tinuo motu ſubſtantiae ſolaris cui contigua eſt, non
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              tantùm abradi & perpoliri, ſed etiam condenſari &
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              indurari, aliâ interim earum ſuperficie, quae coelo ob­
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              verſa eſt, molli & rarâ remanente. </s>
              <s>Ideoque ipſas non
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              facilà diſſolvi, ex eo quòd materia Solis interiorem
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              earum ſuperficiem lambat, niſi ſimul etiam earum oras
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              circumfluat & tranſcendat, ſed contrà potiùs ſemper
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              augeri, quamdiu iſtae earum orae, ſupra Solis ſuperfi­
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              ciem eminentes, ejus materiae occurſu non denſantur. </s>
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              Hincque poteſt contingere, ut aliquando una & eadem
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              macula ſupra totam ſuperficiem alicujus ſideris ſe </s>
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