Descartes, René, Renati Des-Cartes principia philosophiae

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            <pb pagenum="201"/>
            <p type="margin">
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              CLIV.
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              Cur ſecundarii Plane­
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              tae qui ſunt circa Jo­
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              vem, tam celeriter;
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              qui verò ſunt circa</s>
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            <p type="main">
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              illum gyrent, & quiſque tanto celeriùs quantò Jovi eſt
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              vicinior. </s>
              <s>Hujus enim diverſitatis cauſa eſſe poteſt, quòd
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              Jupiter, ut Sol & Terra, circa proprium axe, agatur;
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              Saturnus autem, ut Luna & Cometae, ſemper eandem
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              ſuî partem convertat verſùs centrum vorticis in quo
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              continetur. </s>
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            <p type="margin">
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              Saturnum, tàm tardè
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              vel nullo modo mo­
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              veantur.</s>
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              5</s>
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            <p type="main">
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              Praeterea non mirabimur, quòd axis, circa quem
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              Terra diei ſpatio convolvitur, non ſit perpendiculariter
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              erectus ſupra planum eclipticae, in quo anni ſpatio
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              circa Solem rotatur, ſed pluſquam viginti tribus gra­
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              dibus à perpendiculo declinet: unde oritur diverſitas
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              aeſtatis & hyemis in terrâ. </s>
              <s>Nam motus annuus Terrae
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              in eclipticâ praecipuè determinatur à conſenſu totius
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              materiae coeleſtis circa Solem gyrantis, ut patet ex eo,
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              quòd omnes Planetee in eo quamproximè conſentiant;
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              directio autem ejus axis, circa quem fit motus diur­
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              nus, magis pendet à partibus coeli, à quibus materia
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              primi elementi verſùs ipſam fluit. </s>
              <s>Quippe cùm imagi­
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              nemur omne ſpatium, quod jam à primo coelo occupa­
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              tur, fuiſſe olim diviſum in quatuordecim plureſve vor­
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              tices, in quorum centris erant illa ſidera, quae nunc
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              converſa ſunt in Planetas, fingere non poſſumus illo­
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              rum omnium ſiderum axes verſus eaſdem partes fuiſſe
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              converſos; hoc enim cum legibus naturae non conve­
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              niret. </s>
              <s>Sed valde credibile eſt materiam primi elementi,
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              quae in Terrae ſidus confluebat, ex iiſdem ferè partibus
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              firmamenti veniſſe, quas nunc adhuc ejus poli reſpi­
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              ciunt; atque dum multi macularum cortices ſupra hoc
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              ſidus paulatim generabantur, particulas ſtriatas iſtius
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              materiae primi elementi multos ſibi meatus in his cor­
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              ticibus efformâſſe, ipſoſque ad magnitudinem & </s>
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          </chap>
        </body>
      </text>
    </archimedes>
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