Borelli, Giovanni Alfonso, De motionibus naturalibus a gravitate pendentibus, 1670
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              preſſiuam, pro menſura duplæ grauitatis haberet.
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              <s id="s.000220">Verum tamen eſt, quòd alia de cauſa non eſt neceſ­
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              sè, vt ſemper baſes ſint æquales, neque grauitates
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              ſint in eadem proportione dupla, dummodò altitu­
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              do AH dupla ſit altitudinis ipſius HB; & ratio huius
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              diuerſitatis pendet ex alibi demonſtrandis. </s>
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              Cap. 3. flui­
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              dum in ſue
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              toto quie­
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              ſcens pon­
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              derat.</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 ponde­
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              rat.</s>
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              <s id="s.000223">Ex ſuperiori igitur ratiocinio euinci­
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              tur, falſum eſſe, quòd pronunciabatur,
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              nimirùm, duplam aquam AI vt grauio­
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              rem, expellere deſcendendo debere ſub­
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              duplam aquam ſubiectam HD, cùm ècon
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              tra hæc vt grauior, grauitate nempe pro­
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              pria, & ea, quæ ei ſuperadditur ab aqua
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              ſuperincumbente AI in eodem loco infimo perma­
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              nere debeat, nec vnquam à debiliori compreſſione
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              ſuperſtantis aquæ expelli poſſit, ac proindè ſequitur
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              ſumma quies, ac tranquillitas, non verò motus per­
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              petuus.
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              Ex doctrina
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              ſuperiùs tra­
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              dita videtur
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              deduci poſ­
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              ſe lignum
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              infra aquam
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              poſitum ſur­
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              ſum
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                re</expan>
              non poſſe.</s>
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              <s id="s.000225">Sed dices, ſi vera eſſet adducta doctrina, lignum
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              deberet in fundo aquæ paritèr retineri, proptereą
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              quòd nedum à propria grauitate comprimitur, ſed
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              etiam à pondere totius aquæ ſuperſtantis, & ideò
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              magis grauitaret quàm aqua ei ſuperpoſita, & proin­
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              de lignum in fundo aquæ permanere deberet: hoc
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              autem falſum eſt, cùm experientia conſtet, lignum
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              ſursùm ferri, nec quieſcere, antequàm ad aquæ ſu­
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              premam libellam perducatur. </s>
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