Descartes, René, Renati Des-Cartes principia philosophiae

Table of figures

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              ſupereſt alius regularis ejus motus, quo bis in die ſin­
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              gulis in locis attollitur & deprimitur, interimque ſem­
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              per ab Oriente in Occidentem fluit. </s>
              <s>Ad cujus motûs
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              cauſſam explicandam, ponamus nobis ob oculos exi­
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              guum illum coeli vorticem, qui Terram pro centro
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              habet, quique cum illâ & cum Lunâ in maiori vortice
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              circa Solem fertur. </s>
              <s>Sitque ABCD ille exiguus vortex a;
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              EFGH Terra; 1234 ſuperficies maris, à quo, majoris
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              perſpicuitatis cauſſâ, Terram ubique tegi ſupponimus;
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              &s5678 ſuperficies ae
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              ris mare ambientis. </s>
              <s>Jamque con­
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              ſideremus, ſi nulla in iſto vortice Luna eſſet, punctum
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              T, quòd eſt centrum Terrae, fore in puncto M, quòd
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              eſt vorticis centrum; ſed Lunâ √á exſiſtente verſus B, </s>
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