Gassendi, Pierre, De proportione qua gravia decidentia accelerantur, 1646

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              <s id="s.001666">
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              videlicet
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              motum, eiuſque accelerationem effectum eſſe
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              Phyſicum, qui per parteis maiores, aut minores pro ratione
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              ponderis, & reſiſtentia medij metiendus videatur.
                <emph.end type="italics"/>
              </s>
              <s id="s.001667"> Igitut
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              aër non tantum reſiſtit ſupernè, vt omnes admittunt,
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              ſed etiam infernè, vt tu quoque admittis (& certè vi­
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              detur tantò maior eſſe debere infernè reſiſtentia, quan­
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              tò aër craſſior eſt, & propter terram ſuppoſitam diffici­
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              liùs diffundi, ac dilabi poteſt; ſed hoc parùm eſt.) Aut
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              ergo reſiſtentia aëris infernè eſt maior, quàm impulſio
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              ſupernè, aut æqualis, aut minor. </s>
              <s id="s.001668">Si dicas maiorem;
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              igitur motus rei cadentis non accelerationem ab aëre,
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              ſed retardationem patietur. </s>
              <s id="s.001669">Si æqualem; igitur motus
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              non acecl
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              rabitur, ſed vno ſemper tenore erit. </s>
              <s id="s.001670">Si mi­
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              norem, igitur cum tota vis aëris ſupernè impellens ſit
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              ab ipſa vi lapidis infernè aërem vtgentis, erit effectus
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              potentior cauſſa; & exſiſtente aëre, quaſi flagello, quo
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              lapis ſeipſum quaſi verberet, fiet flagelli adactio,
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              quam intentatio rapidior; &, vt verbo dicam, mouebi­
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              tur aër velociùs à tergo, quàm refugiat à fronte; ſic­
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              que neceſſariò relinquet locum in medio vacuum:
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              quod vt repugnat, ſic clarum eſt, non poſse aerem ve­
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              lociùs accedere, quàm abſcedat: cùm etiam ex ſe tantò
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              moueatur ſegniùs, quantò longiùs ab
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              t à cauſſa mo­
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              uente. </s>
              <s id="s.001671">Ac vt præteream, ſi id dicas, idem prorsùs fo­
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              re dicendum de aere, dum lapis ſeu ſurſum, ſeu alior­
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              ſum compellitur: prætereo quoque non fore quam­
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              obrem cauſſemur aerem ſuâ reſiſtentiâ retardare tan­
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              tillum motum, cùm illum potiùs ſit promoturus; ne­
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              que quamobrem concludamus aerem quicquam re­
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              ſiſtere, cùm nullum ſit reſiſtentiæ ipſius futurum indi-</s>
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        </body>
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