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

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              <s id="id.000670">
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              muſcæ, & ſimilia; habent & ea motum ab ipſamet
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              Terra, aut certe à turri, arbore, menſa, manu,
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              corporeve alio, cui Terræ hærenti, quando auo­
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              lant, innituntur; vti dum aliquis ex puppi, aut ſcam­
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              no, quod in ea, verſus proram ſalit. </s>
              <s id="id.000671">Contingit autem
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              volucres non ad perpendiculum ſubinde decidere
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              (quod ſi facerent, non proptereà motum horizon­
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              talem minùs haberent, vt dictum eſt de lapide ſe­
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              cundum turrim decidente) ſed poſſe alarum bene­
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              ficio eiuſmodi motum variare, quantum aer vnà
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              tranſlatus poteſt eſſe ſubſidio. </s>
              <s id="id.000672">Nam ſinullus quidem
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              eſſet ſuppoſitus aër, aut aues alas non explicarent,
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              rum lapidum inſtar caderent in Terram; at quià
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              aer ſubeſt, corpulentiamque aliquam habet, quæ
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              alis verberata tantum reſiſtat, quantum ſatis eſt, vt
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              volatilia vel ſuſtententur, vel etiam magis euehantur;
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              heinc fit, vt pro repulſu à reſiſtente aere facto, mo­
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              tus per aerem varietur, neque ille generalis, hori­
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              zontaliſque ipſi magis obſtet, quàm obſtat perpen­
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              diculari. </s>
              <s id="id.000673">Nempe illa pars aeris verberata, aliſque
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              reſiſtens comparari poteſt illi parti funis intra na­
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              uim tenſi, quam funambulus inter ſaliendum pede
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              pulſet. </s>
              <s id="id.000674">Quin etiam comparari poteſt cuilibet parti
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              nauis, è qua quis ipſam pedibus pulſans, ſalire in
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              quamcumque valeat. </s>
              <s id="id.000675">Quippe motus nauis, qui il­
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              lum & inſiſtentem, & per aerem ſaliendo tranſla­
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              tum ſemper deuehet, nihil prorſùs impediet, quò
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              minùs ex vna parte nauis in aliam inſiliat, ſitumque,
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              vt volet, commutet. </s>
              <s id="id.000676">Declararem in piſce, animali­
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              ve alio natante; cùm aquam poſſe & vnà transferri, </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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