Heron <Alexandrinus>, Heronis Alexandrini spiritalium liber

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          <p>
            <s xml:id="echoid-s348" xml:space="preserve">Ex jam demonſtratis perſpicuum eſt ſiphonis fluxum, eo
              <lb/>
            immobili permanente inæqualem fieri, idem enim contin-
              <lb/>
            git & </s>
            <s xml:id="echoid-s349" xml:space="preserve">vaſe ad fundum perforato, & </s>
            <s xml:id="echoid-s350" xml:space="preserve">fluente: </s>
            <s xml:id="echoid-s351" xml:space="preserve">namque & </s>
            <s xml:id="echoid-s352" xml:space="preserve">hic
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            fluxus inæqualis eſt, propterea quod in principio quidem
              <lb/>
            aquæ effuſio majori gravitate premitur, poſt vero ea evacuata
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            minori: </s>
            <s xml:id="echoid-s353" xml:space="preserve">& </s>
            <s xml:id="echoid-s354" xml:space="preserve">quo ſiphonis exceſſus major eſt, eo celerior fluxus
              <lb/>
            efficitur: </s>
            <s xml:id="echoid-s355" xml:space="preserve">rurſus enim fluxus, qui fit per oſculum ipſius, ma-
              <lb/>
            jori gravitate urgetur, quàm cum minor ſit exterior exceſſus,
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            quo videlicet ſuperficies aquæ in vaſe exiſtentis exterius ſi-
              <lb/>
            phonis oſculum excedit: </s>
            <s xml:id="echoid-s356" xml:space="preserve">fluxus igitur per ſiphonem ſemper
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            inæqualis jam dictus eſt: </s>
            <s xml:id="echoid-s357" xml:space="preserve">oportet autem fluxum ſemper æ-
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            qualem per ſiphonem invenire.</s>
            <s xml:id="echoid-s358" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div11" type="section" level="1" n="9">
          <head xml:id="echoid-head15" style="it" xml:space="preserve">De fluxu ſemper æquali per ſiphonem inflexum. III.</head>
          <p>
            <s xml:id="echoid-s359" xml:space="preserve">Sit aliquod A B vas aqua plenum in quo ſupernater C D lebetarium,
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            habens os obtectum operculo C D, per operculum vero, & </s>
            <s xml:id="echoid-s360" xml:space="preserve">fundum lebe-
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            tarii trajiciatur ſiphonis alterum crus, & </s>
            <s xml:id="echoid-s361" xml:space="preserve">ſtanno ad foramina coarctetur:
              <lb/>
            </s>
            <s xml:id="echoid-s362" xml:space="preserve">alterum autem crus ſit extra vas A B: </s>
            <s xml:id="echoid-s363" xml:space="preserve">habeatque oſculum humilius, quam
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            ſit aquæ in vaſe exiſtentis ſuperficies. </s>
            <s xml:id="echoid-s364" xml:space="preserve">Si igitur per ſiphonis oſculum
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            exterius aërem, qui eſt in ſiphone attrahemus, ſimul conſequetur
              <lb/>
            & </s>
            <s xml:id="echoid-s365" xml:space="preserve">humidum; </s>
            <s xml:id="echoid-s366" xml:space="preserve">quod non poſſit
              <lb/>
              <figure xlink:label="fig-0020-01" xlink:href="fig-0020-01a" number="7">
                <image file="0020-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/0020-01"/>
              </figure>
            in ſiphone locus omnino vacuus
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            eſſe: </s>
            <s xml:id="echoid-s367" xml:space="preserve">& </s>
            <s xml:id="echoid-s368" xml:space="preserve">cum principium fluxus
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            acceperit ſiphon, eo uſque fluet,
              <lb/>
            quoad totam, quæ in vafe con-
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            tinetur, aquam exhauſerit: </s>
            <s xml:id="echoid-s369" xml:space="preserve">eſt
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            autem is fluxus æqualis, præte-
              <lb/>
            rea quod exceſſus ſiphonis ex-
              <lb/>
            tra, quo in partem inferiorem
              <lb/>
            excedit ſuperficiem aquæ ſemper
              <lb/>
            idem manet; </s>
            <s xml:id="echoid-s370" xml:space="preserve">quoniam in vaſis
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            exinanitione ſimul & </s>
            <s xml:id="echoid-s371" xml:space="preserve">lebes cum
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            ſiphone deſcendit: </s>
            <s xml:id="echoid-s372" xml:space="preserve">quo autem
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            exceſſus extra major ſit, eo ve-
              <lb/>
            locior erit fluxus, quamquam
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            per ſeipſum æqualis. </s>
            <s xml:id="echoid-s373" xml:space="preserve">Sit dictus
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            ſiphon E F G, aquæ autem
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            ſuperficies ad rectam lineam
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            H K.</s>
            <s xml:id="echoid-s374" xml:space="preserve"/>
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