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

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            <p type="main">
              <s id="s.000854">
                <pb pagenum="169" xlink:href="010/01/177.jpg"/>
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            <p type="margin">
              <s id="s.000855">
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              Cap. 4. poſi­
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              tiuam leui­
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              tatem noņ
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              dari.</s>
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            <p type="margin">
              <s id="s.000856">
                <margin.target id="marg216"/>
              Cap. 4. poſi­
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              tiuam leui­
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              tatem noņ
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              dari.</s>
            </p>
            <p type="main">
              <s id="s.000857">His declaratis accedamus iam ad difficultates ad­
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              uerſarij, in quibus ſupponit, quòd dum ligneus cy­
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              lindrus GE exquiſito, & immediato contactu fundo
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              vaſis adhæret, ipſumque veluti exoſculatur, licèt vas </s>
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            <p type="main">
              <s id="s.000858">
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              repletum aqua fuerit, lignum ſponte ſua, & vi eius
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              leuitatis ſursùm aſcendere deberet. </s>
              <s id="s.000859">Sed quid facies,
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              ſi experimentum huic aſſertioni refragatur? </s>
              <s id="s.000860">Et pro­
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              cùl dubio ſi experimentum ita ſe haberet, vt ab ipſo
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              refertur, ſcilicèt ſi cylindrus ligneus GE exquiſitè
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              tangens ſuperficiem fundi vaſis BG complanatam,
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              & lęuigatam, eſſetque vas aqua repletum, & nihilo­
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              minus lignum ſursùm aſcenderet, neceſſariò aſſerere
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              teneremur, & confiteri, lignum, non à principio ex­
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              trinſeco per extruſionem, ſed à vi naturali leuitatis
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              eius aſcendere. </s>
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            <p type="margin">
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              Experimen­
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              tum falſum
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              aduerſarij
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              pro leuitate
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              poſitiua.</s>
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            <p type="main">
              <s id="s.000862">
                <emph type="center"/>
              PROP. LXXXII.
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              </s>
            </p>
            <p type="main">
              <s id="s.000863">
                <emph type="center"/>
                <emph type="italics"/>
              Experimentis euincitur non ob defectum leuitatis poſitiuæ,
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              ſed quia extruſio à medio fluido grauiori fieri non po­
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              test, lignum in aquæ fundo quieſcere.
                <emph.end type="italics"/>
                <emph.end type="center"/>
              </s>
            </p>
            <p type="main">
              <s id="s.000864">VErùm quia lignum EG in aqua demerſum non
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              aſcendit è fundo vaſis cui adhæret, imò ibidem
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              ſiſtitur, & quieſcit, igitur
                <expan abbr="">non</expan>
              ineſt in ligno cauſa ima­
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              ginata, quæ leuitas poſitiua vocatur. </s>
              <s id="s.000865">E contrà quo­
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              tieſcumque fieri, & exerceri poteſt extruſio medij
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              fluidi, ideſt quotieſcumque fluidum grauius fluerę
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              poteſt, & inſinuari infra cylindrum ligneum, ſemper
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              ſubſequitur effectus aſcenſus illius, at quando (vt </s>
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          </chap>
        </body>
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