Heron <Alexandrinus>, Heronis Alexandrini spiritalium liber

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        <div xml:id="echoid-div131" type="section" level="1" n="83">
          <head xml:id="echoid-head89" xml:space="preserve">LXXV.</head>
          <p>
            <s xml:id="echoid-s1908" xml:space="preserve">Hydraulici inſtrumenti conſtructio.</s>
            <s xml:id="echoid-s1909" xml:space="preserve"/>
          </p>
          <figure number="84">
            <image file="0102-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/0102-01"/>
          </figure>
          <p>
            <s xml:id="echoid-s1910" xml:space="preserve">Sit quædam arula ænea A B C D, in qua ſit aqua, & </s>
            <s xml:id="echoid-s1911" xml:space="preserve">in aqua conca-
              <lb/>
            vum hemiſphærium inverſum, quod furnus appellatur E F G H, ha-
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            bens in humido defluxum, ad partes, quæ in fundo ſunt. </s>
            <s xml:id="echoid-s1912" xml:space="preserve">A vertice autem
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            ipſius duo producantur tubi ſimul cum eo perforati, qui ſunt circa aru-
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            lam, quorum unus G K L M in exteriorem arulæ partem incurvetur,
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            ſimul perforatas cum modiolo N X O P habente os infra, & </s>
            <s xml:id="echoid-s1913" xml:space="preserve">interiorem
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            ſuperficiem rectam ad embolum. </s>
            <s xml:id="echoid-s1914" xml:space="preserve">Huic autem embolus R S apteturita,
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            ut aeringredi non poſſit. </s>
            <s xml:id="echoid-s1915" xml:space="preserve">Atque embolo jungatur regula TY valde fir-
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            ma, ad quam aptetur alia regula Y Φ, mota circa clavum in Y, & </s>
            <s xml:id="echoid-s1916" xml:space="preserve">cir-
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            cumacta ad rectam regulam ΨQ firmiter ſtabilitam. </s>
            <s xml:id="echoid-s1917" xml:space="preserve">At modiolo NXOP
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            imponatur ad fundum alter modiolus parvus Ω ſimul cum ipſo perforatus,
              <lb/>
            & </s>
            <s xml:id="echoid-s1918" xml:space="preserve">coopertus ex parte ſuperiori, habensque foramen, per quod aër in
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            modiolum ingrediatur. </s>
            <s xml:id="echoid-s1919" xml:space="preserve">Sub foramine autem ſit laminula ipſum </s>
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