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

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              Demonſtratio, qua ratio, menſura, modus, ac poten­
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              tia accelerationis motus in naturali deſcenſu grauium
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              determinantur; aduerſus nuper excogitatam à
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              G
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              alileo
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              Galilei Florentino Philoſopho, ac Mathematico de
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              eodem motu Pſeudo ſcientiam.
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              Hæc ergo Epiſtola eſt,
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              ad quam heic primùm Respondetur.
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              A pag. </s>
              <s id="s.000016">1. in 3. </s>
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              <s id="s.000017">ART. II. III. IV. V. </s>
              <s id="s.000018">Status Controuerſiæ. </s>
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              <s id="s.000019">
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              Quæritur nimirùm, An, cùm lapide, v. c. ex alto cadente,
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              accipere liceat primum quoddam spatium, vt vnam orgyiam;
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              & habe re pro momento, ſeu tempore primo illud quod effluit,
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              donec lapis per hanc orgyiam decidit: & pro gradu celeritatis
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              primo eam celeritatem, quæ in fine primi huius temporis acqui­
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              ſita eſt: An inquam, acceptis deinceps æqualibus ſpatijs, tempo­
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              ribus, & gradibus, cenſeri debeat lapis motuſ-ve ipſius tum
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              acquiſiiſſe duos celeritatis gradus, cùm eſt ſuperata ſecunda
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              orgyia, licet ſecundum tempus nondum totum effluxerit, ac
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              pari modo treis, cùm tertia, quatuor cum quarta, &c. </s>
              <s id="s.000020">adeò vt
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              ſemper velocitates ſe habeant ſicut ſpatia, quòd R. P. conten­
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              dit: An potiùs cenſeride beat
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              acquiſiiſſe duos celeritatis gra­
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              dus, cùm effluxit ſecundum tempus, licet plura spatia, quàm
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              duo ſuperata ſint: ac pari modo treis, cùm tertium, quatuor,
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              cùm quartum, &c. </s>
              <s id="s.000021">adeò vt ſemper velocitates ſe habeant ſicut
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              tempora; quæ eſt Galilei ſententia. </s>
              <s id="s.000022">Ex qua aliunde ſequitur,
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              vt temporibus æqualibus ſpatia ſuperentur iuxta numeros ab
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              vnitate impareis: ita vt ſi primo tempore lapis decidat per
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              vnam orgyiam, decidat ſecundo per treis, tertio per quinque,
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              quarto per ſeptem, &c. </s>
              <s id="s.000023">atque idcircò spatia in fine cuiuſque
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              temporis à principio vſque aggregata habeant ſe ſicut quadra­
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              ta temporum; hoc eſt, vt spatia ſuperata ſint in fine vnius
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              </s>
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