Gassendi, Pierre, De motu impresso a motore translato epistulae duae, 1642

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            <p type="main">
              <s id="id.000237">
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              confert; quatenùs calce vnius terram attingente,
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              & priuſquàm tota planta ſenſim ſuccedat, digiti al­
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              terius (plantâ reliquâ iam elatâ) è terra attolluntur,
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              ſicque, abſque interruptione, trunci corporis motus
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              continuatur. </s>
              <s id="id.000238">Tametſi notandum eſt truncum non
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              promoueri ab eo pede, qui elatus eſt, proceditque
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              per aërem; ſed ab eo, qui terræ inhæret, & ſupra
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              quem crus deferens truncum euoluitur. </s>
              <s id="id.000239">Intelliges
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              enim ex his, quia corporis truncus æquabiliter in­
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              cedit, & pedes alternatìm dimidio temporis ince­
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              dunt, dimidio quieſcunt: ideò debere motum pe­
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              dum eſſe motu trunci duplò velociorem; & parteis
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              crurum reliquas tantò moueri tardiùs, quàm pedes,
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              quantò accedunt propiús ad coxendices, quæ non
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              majore feruntur velocitate, quàm truncus. </s>
              <s id="id.000240">Intelliges
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              etiam conſequenter manus, dimidio quoque tempo­
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              ris quieſcenteis, & reliquo dimidio prorſùm expor­
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              rectas, moueri duplò velociùs trunco: & parteis brac­
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              chij reliquas tantò moueri lentiùs, quantò magis ad
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              ſcapulas ſimùl cum trunco motas accedunt. </s>
              <s id="id.000241">Intelli­
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              ges denique ob quam cauſam fiat, quod initio dixi,
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              pilam dimiſſam, quando manus antrorſum exporri­
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              gitur, duplò velociùs moueri, quàm truncum; &
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              dimiſſam quo tempore manus retrorsùm ire apparet,
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              ad perpendiculum ſemper cadere. </s>
              <s id="id.000242">Nimirùm, quia
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              priore caſu motum conſequitur à manu duplò ve­
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              lociùs, quàm truncus tranſlata; & poſteriore, nul­
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              lum habet à manu (ſcilicet immota, conſiſtentéque)
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              impreſſum. </s>
            </p>
            <p type="main">
              <s id="id.000243">IV. </s>
              <s id="id.000244">Iam cùm hæc ita ſeſe habeant, facilè cauſam </s>
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