Heron <Alexandrinus>, Heronis Alexandrini spiritalium liber

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        <div xml:id="echoid-div38" type="section" level="1" n="26">
          <pb o="33" file="0039" n="39" rhead="SPIRITAL. LIBER."/>
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        <div xml:id="echoid-div40" type="section" level="1" n="27">
          <head xml:id="echoid-head33" xml:space="preserve">XX.</head>
          <p>
            <s xml:id="echoid-s729" xml:space="preserve">Quod ſi in uſumidem parare velimus, ut cratere in aliquo
              <lb/>
            loco collocato, quanquam ex ipſo plurimum aquæ hauria-
              <lb/>
            tur, tamen ſemper plenus exiſtat, ita conſtruetur.</s>
            <s xml:id="echoid-s730" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s731" xml:space="preserve">Sit vas A B, & </s>
            <s xml:id="echoid-s732" xml:space="preserve">
              <lb/>
              <figure xlink:label="fig-0039-01" xlink:href="fig-0039-01a" number="26">
                <image file="0039-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/0039-01"/>
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            in eo aqua, quæ ad
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            futurum uſum ſuffi-
              <lb/>
            ciat: </s>
            <s xml:id="echoid-s733" xml:space="preserve">canalis autem
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            ex ipſo ſit C D, cui
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            ſubjiciatur torcular
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            G H: </s>
            <s xml:id="echoid-s734" xml:space="preserve">& </s>
            <s xml:id="echoid-s735" xml:space="preserve">regula quæ-
              <lb/>
            dam juxta canalem
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            aptetur E F: </s>
            <s xml:id="echoid-s736" xml:space="preserve">ad cu-
              <lb/>
            jus extremitatem E
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            ſuſpendatur ſuber K,
              <lb/>
            exiſtens in torculari:
              <lb/>
            </s>
            <s xml:id="echoid-s737" xml:space="preserve">ad F vero religetur
              <lb/>
            catenula habens pon-
              <lb/>
            dus plumbeum X,
              <lb/>
            quod ita ſit conſtructum, ut ſubere K in torcularis aqua innatante clau-
              <lb/>
            datur canalis: </s>
            <s xml:id="echoid-s738" xml:space="preserve">evacuata autem aqua extorculari, deſcendens ſuber ca-
              <lb/>
            nalem aperiat; </s>
            <s xml:id="echoid-s739" xml:space="preserve">ita ut rurſus influens aqua ſuber extollat: </s>
            <s xml:id="echoid-s740" xml:space="preserve">& </s>
            <s xml:id="echoid-s741" xml:space="preserve">rurſus ca-
              <lb/>
            nalis claudatur: </s>
            <s xml:id="echoid-s742" xml:space="preserve">oportebit autem ſuber gravius eſſe eo pondere, quod
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            ad X conſtituitur. </s>
            <s xml:id="echoid-s743" xml:space="preserve">Sit autem jam dictus crater L M in aliquo loco poſitus,
              <lb/>
            cujus labrum ſit in eadem ſuperficie, in qua torcularis aqua, quando ſu-
              <lb/>
            bere innatante canalis non amplius influit: </s>
            <s xml:id="echoid-s744" xml:space="preserve">ex torculari vero feratur tu-
              <lb/>
            bus in fundum crateris H N: </s>
            <s xml:id="echoid-s745" xml:space="preserve">cum igitur pleno exiſtente cratere hauſerit
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            quis aquam, ſimul & </s>
            <s xml:id="echoid-s746" xml:space="preserve">eam, quæ eſt in H G torculari evacuabit: </s>
            <s xml:id="echoid-s747" xml:space="preserve">deſcen-
              <lb/>
            denſque ſuber canalem aperiet: </s>
            <s xml:id="echoid-s748" xml:space="preserve">& </s>
            <s xml:id="echoid-s749" xml:space="preserve">influens in torcular, & </s>
            <s xml:id="echoid-s750" xml:space="preserve">craterem aqua
              <lb/>
            efferet, & </s>
            <s xml:id="echoid-s751" xml:space="preserve">extollet ſuber, ita ut rurſus non amplius influat: </s>
            <s xml:id="echoid-s752" xml:space="preserve">atque hoc
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            toties fiet, quoties quis ex cratere aquam abftulerit.</s>
            <s xml:id="echoid-s753" xml:space="preserve"/>
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