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

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            <p type="main">
              <s id="s.000698">
                <pb pagenum="139" xlink:href="010/01/147.jpg"/>
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            <p type="margin">
              <s id="s.000699">
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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.000700">
                <margin.target id="marg171"/>
              Cap. 4. poſi­
                <lb/>
              tiuam leui­
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              tatem noņ
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              dari.</s>
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            <p type="main">
              <s id="s.000701">
                <emph type="center"/>
              PROP. LXIX.
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            </p>
            <p type="main">
              <s id="s.000702">
                <emph type="center"/>
                <emph type="italics"/>
              Flammæ candelæ vertex acuminatur, quia magis accen­
                <lb/>
              ſus, & ideò velociùs aſcendit, quàm baſis eius.
                <emph.end type="italics"/>
                <emph.end type="center"/>
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            </p>
            <p type="main">
              <s id="s.000703">PRæterea
                <expan abbr="ſupponẽdum">ſupponendum</expan>
              eſt, flammam candelæ
                <expan abbr="nõ">non</expan>
                <lb/>
              habere conſiſtentiam homogeneam, & ſimila­
                <lb/>
              rem, pars enim infima flammulæ non eſt omninò ac­
                <lb/>
              cenſa, quod conſtat ex eius colore ſubliuido, quia
                <lb/>
              nimirùm fumi oleoſi eructati ab elicnio, vel ligno
                <expan abbr="nõ">non</expan>
                <lb/>
              in inſtanti, ſed in
                <expan abbr="tẽpore">tempore</expan>
              accendi debent, igitur veri­
                <lb/>
              ſimile eſt, quòd
                <expan abbr="nõ">non</expan>
              omnes prędicti fumi ſubitò poſt e­
                <lb/>
              greſſum in ipſo contactu baſis flammæ ſimùl, & inte­
                <lb/>
              grè accendantur, & propterea rarefactio, & accen­
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              ſio continuatur dùm actu excurrunt illæ particulæ à
                <lb/>
              baſi versùs verticem flammæ. </s>
              <s id="s.000704">Modò ſi in baſi flam­
                <lb/>
              mulæ fumi non ſunt omninò, & integrè accenſi, non
                <lb/>
              habebunt velociſſimum illum motum, cuius capax
                <lb/>
              eſt flammæ puræ natura, igitur in ipſa flamma conci­
                <lb/>
              pi debet pars infima tardior, quàm ſuprema, & ver­
                <lb/>
              ticalis, ſed ſicuti in fluuio nulla alia de cauſa tantą
                <lb/>
              copia aquæ in anguſtiſſimum ſpatium aluei reſtrin­
                <lb/>
              gitur coanguſtaturque, niſi quia velociſſimè excur­
                <lb/>
              rit, cùm è contrà in locis dilatatis, & amplis eadem
                <lb/>
              aquæ fluminis moles amplius ſpatium aluei ob eius
                <lb/>
              tarditatem occupet, ita in flamma lucernæ, quæ vt
                <lb/>
              fluuius ignis excurrentis concipi poteſt, mirum
                <expan abbr="nõ">non</expan>
                <lb/>
              eſt, quòd in baſi propè elicnium ob tarditatem eius
                <lb/>
              fluxus ampliorem ſitum occupet, quàm in eius ver-</s>
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          </chap>
        </body>
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