Descartes, René, Renati Des-Cartes principia philosophiae

Page concordance

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            <pb pagenum="213"/>
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              XXI.
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              Omnes Terrae parts,
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              ſi ſolae ſpectentur, non
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              eſſe graves, ſed leves. </s>
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              20</s>
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            <p type="margin">
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              25</s>
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              30</s>
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              Cùm autem nullum ſit tale vacuum, nec Terra pro­
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              prio motu cieatur a, ſed à materiâ coeleſti, eam am­
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              biente, omneſque ejus poros pervadente, deferatur,
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              ipſa habet rationem corporis quieſcentis; materia au­
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              tem coeleſtis, quatenus tota conſentit in illum motum
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              quo Terram deſert, nullam habet vim gravitatis, nec
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              levitatis; ſed quatenus ejus partes plus habent agita­
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              tionis quàm in hoc impendant, ideoque ſemper tectas
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              occurſu à motibus ſuis ſecundùm lineas rerrae
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              quendis impediuntur, ſemper ab eâ quantum poſſunt
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              recedunt, & in hoc earum levitas conſiſtit. </s>
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            <p type="margin">
              <s>
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              XXII.
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              In quo conſiſtat levitas
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              materiae coeleſtis. </s>
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            <p type="margin">
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              10</s>
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              Notandum deinde, vim quam habent ſingulae partes
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              materiae coeleſtis ad recedendum à Terrâ, ſuum effe­
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              ctum fortèiri non poſſent, niſl, dum ille aſcendunt, ali­
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              quas partes terreſtres in quarum locum ſuccedunt,
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              infra ſe deprimant & propellant. </s>
              <s>Cùm enim omnia
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              ſpatia quae ſunt circa Terram, vel à particulis corpo­
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              rum terreſtrium, vel à materiâ coeleſti occupentur;
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              atque omnes globuli hujus materiae cceleſtis aequalem
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              habeant propenſionem ad ſe ab eâ removendos, nul­
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              lam ſinguli habent vim, ad alios ſui ſimiles loco pel­
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              lendos. </s>
              <s>Sed cùm talis propenſio non ſit tanta b in par­
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              ticulis corporum terreſtrium, quoties aliquas ex ipſis
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              ſupra ſe habent, omnino in eas vim iſtam ſuam de­
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              bent exercere. </s>
              <s>Atque ita gravitas cujuſque corporis
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              terreſtris non propriè efficitur ab omni materiâ coeleſti
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              illud circumfluente, ſed praecisè tantùm ab eâ ipſius
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              parte, quae, ſi corpus iſtud deſcendat, in ejus locum
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              immediat aſcendit, ac proinde quae eſt illi </s>
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