Schott, Gaspar, Mechanica hydraulico-pneumatica. Pars I. Mechanicae Hydraulico-pnevmaticae Theoriam continet. , 1657

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            <p type="main">
              <s>
                <pb xlink:href="051/01/057.jpg" pagenum="26"/>
              planas ſuperficies coniuncta ſunt, vt vnum illorum elevatur, ſe­
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              qui etiam alterum, quantumvis grave, atque in aëre libero ve­
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              luti ſuſpenſum hærere. </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg75"/>
                <emph type="italics"/>
              Latera fol­
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              lium diauci
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              non poſſunt,
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              ore occluſe,
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              ob metum
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              vacus.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg76"/>
                <emph type="italics"/>
              Tabulæ pla­
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              næ metu va­
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              cui divelli
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              non poſſunt.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>Secundò, Si vas vitreum aquæ immergas atque impleas &
                <lb/>
                <arrow.to.target n="marg77"/>
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              deinde intra aquam invertas, vt patens os deorſum vergat, tum
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              æqualiter ita inverſum eleves, & extrahere tentes; ſpectabis a­
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              quam illo incluſam ſurſum intra illud ſimul attolli; & ſi vas illud
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              ex parte iam extractum, & ex parte adhuc immerſum, manu ſu­
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              ſtineas, videbis etiam aquam incluſam in illo perſiſtere ſic eleva­
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              tam ſupra ambientis aquæ ſuperficiem æquilibratam, & ſuo et­
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              iam pondere manum ſuſtinentis aggravare. </s>
              <s>Cur hoc? </s>
              <s>Quia
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              non poteſt aër ſuccedere ad occupandum locum inter aquam
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              deſcendentem, & partes vaſis, quæ aquâ deſcendente deſere­
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              rentur. </s>
              <s>Idem continget in quolibet alio vaſe, ſed in vitreo et­
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              iam oculis patebit experimentum. </s>
              <s>Quòd ſi in fundo vaſis fora­
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              men aliquod ſit clauſum, vt poſſit aperiri; eo aperto, & aëre li­
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              berè ſubintrante, aqua intra vas ſuſpenſum deſcendet, & deſi­
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              net gravare manum.
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                <arrow.to.target n="marg78"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg77"/>
                <emph type="italics"/>
              Vas inver­
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              ſum difficul­
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              ter extrahi­
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              tur ex aqua
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              ob vacui
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              metum.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg78"/>
                <emph type="italics"/>
              Vaſa ſubtus
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              pertuſa, ſu­
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              periùs occlu­
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              ſa, aquam
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              retinent va­
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              uí metu.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>Tertiò, In vaſis ad irrigandos hortos paſſim adhiberi ſoli­
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              tis (cuiuſmodi proponimus infrà Claſs. 1. cap. 6. Mach 2, & Cri­
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              brum Veſtalium vocamus) licet fundum ipſorum ſit perforatum,
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              & multis foraminibus pervium, dum aquâ plena, æqualiter ele­
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              vantur in libero aëre, aqua non defluit, quàm diu digitus fora­
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              mini illorum ſupernè in collo patenti adpreſſus non permittit in­
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              greſſum aëri ad replendum locum, qui, ſi deflueret aqua, relin­
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              queretur inter ſuperiorem vaſis ſuperficiem, & defluentem a­
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              quam. </s>
              <s>Et in tali conſiſtentia permanente aquâ intra vas, tan­
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              tum gravat, & deorſum nititur aqua, quantum ſi fundo integro
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              & collo aperto, ſimul cum vaſe ſuſtineretur. </s>
              <s>Remoto verò di­
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              gito, & permiſſo ingreſſu aëri per ſuperius foramen, ſtatim de­
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              fluit aqua ex fundi foraminibus. </s>
              <s>Quòd ſi in medio defluxu ite­
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              rum appoſito digito foramen obſtruatur, pendet iterum aqua,
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              contra inclinacionem ſuæ gravitatis, tunc etiam manum gra­
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              vantis, nec defluit in apertum aërem. </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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