Borelli, Giovanni Alfonso, De motionibus naturalibus a gravitate pendentibus, 1670

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        <body>
          <chap>
            <p type="main">
              <s id="s.002920">
                <pb pagenum="544" xlink:href="010/01/552.jpg"/>
                <arrow.to.target n="marg771"/>
                <lb/>
              punctum conuenientes ſummam octo ſolidorum an­
                <lb/>
              gulorum rectorum numquam, vel rarò complere poſ­
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              ſe videantur; veluti aceruus, & cumulus arenæ, aut
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              tritici concipi non poteſt abſque eò quòd ſpatiolą
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              innumera inter grana prædicta intercipiantur, quæ
                <lb/>
              ſpatiola augeri, & reſtringi poſſe experientia con­
                <lb/>
              ſtat, quatenùs ſuccuſſo modio meliùs, & ſtrictiùs
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              granula accommodari poſſunt. </s>
              <s id="s.002921">Et licèt gratis conce­
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              datur alicubi partes ætheris omninò ſpatium imple­
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              re, ſaltem poſt eius agitationem, & commotionem̨
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              vacua ſpatiola creari debere conſtat, vt dictum eſt;
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              cùmque eadem partium diſpoſitio perſeuerare poſ­
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              ſit in ſubſequenti quiete eiuſdem fluidi ætherei, per­
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              ſeuerabunt quoque poroſitates illæ vacuæ. </s>
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            <p type="margin">
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              Cap. 12. dę
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              vacui neceſ­
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              ſitate.</s>
            </p>
            <p type="main">
              <s id="s.002923">Huiuſmodi porrò vacua ſpatiola intra corporą
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              mundana diſperſa, & diſſeminata præclarum vſum̨
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              habent in natura, non minùs ac pori, qui in plantis, &
                <lb/>
              animalibus reperiuntur; ſicuti enim per eos effluere,
                <lb/>
              & penetrare poſſunt exhalationes igneę, ſucci, & alia
                <lb/>
              corpuſcula, à quibus viuificantur, nutriuntur, & cre­
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              ſcunt, ita per inanes mundanorum corporum poroſi­
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              tates effluuia ignea lucida, & alia innumera pene­
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              trando rerum naturalis ordo, & periodus conſerua­
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              tur. </s>
              <s id="s.002924">Præterea ex vacuis prædictis diſſeminatis ha­
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              betur facilis, & perceptibilis modus quomodo cor­
                <lb/>
              pora fluida, mollia, & flexibilia fluere, cedere, &
                <lb/>
              flecti poſſint, & quomodo ſecari, diuidi, condenſa­
                <lb/>
              ri, & rarefieri queant, ſine quibus hæ omnes operati­
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              ones nullo modo percipi, & explicari poſſint. </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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