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

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            <p type="main">
              <s id="s.000351">
                <pb pagenum="74" xlink:href="010/01/082.jpg"/>
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                <lb/>
                <figure id="id.010.01.082.1.jpg" xlink:href="010/01/082/1.jpg" number="34"/>
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              dem verificetur, dum aqua
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              in prædicto vaſe contenta
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              prorsùs quieſcit, ſaltèm̨
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              quoad ſenſus
                <expan abbr="apparentiã">apparentiam</expan>
              ,
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              ſi poſtea aqua agitetur, vt
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              nimirùm pars EF deſcen­
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              dat verſus vaſis fundum, reliqua verò pars FG, ſur­
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              sùm aſcendat motu quodam vertiginoſo, fi verum̨
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              eſt, quòd motus aſcenſiuus ipſius aquæ indicat de­
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              fectum grauitatis eius, tunc perſeuerante dicto mo­
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              tu aſcenſus minui deberet pondus totius vaſis AC,
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              & propterea libra HL non quieſceret, ſed deprime­
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              retur pondus R, quod tamen repugnat ſenſus eui­
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              dentiæ; non igitur ex eo quòd aqua mouetur in ali­
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              quo vaſe carebit propria, & natiua grauitate, ſicuti
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              homo aſcendens per ſcalam extremo termino libræ
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              alligatam æquali momento libram premeret, ac ſi
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              idem homo in ſcala quieſceret, quia nimirùm dum
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              aſcendit non minus ſuſtentatur quàm dum quieſcit. </s>
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              Cap. 3. flui­
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              dum in ſuo
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              toto quie­
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              ſcens pon­
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              derat.</s>
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            <p type="main">
              <s id="s.000353">Sed dices, cum motus vertiginoſus aquæ fieri
                <expan abbr="nõ">non</expan>
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              poſſit abſque eo quod vna pars deſcendat, & reli­
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              qua ſubleuetur, eſt valdè probabile, vt ſicut aſcenſus
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              aquæ FG indicat defectum grauitatis, cùm prædi­
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              ctus motus ſupponat impetum à quo ſursùm propel­
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              latur ſicuti ſaxum quod ſursùm proijcitur in actu ſui
                <lb/>
              aſcenſus, neque graue dici poteſt, nec grauitatem
                <lb/>
              exercet, proptereà quòd ab impetu impreſſo con­
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              trario grauitati, vel ipſamet grauitas deſtruitur, vel
                <lb/>
              impeditur, & ceſſat eius operatio. </s>
              <s id="s.000354">Oppoſitum con-</s>
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