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

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            <p type="main">
              <s>
                <pb xlink:href="051/01/053.jpg" pagenum="22"/>
              locus exinanitus repleatur:
                <emph type="italics"/>
              iniectus enim ignis,
                <emph.end type="italics"/>
              ſubjungit Hero,
                <lb/>
                <emph type="italics"/>
              corrumpit & extenuat aërem, qui in ipſis continetur,
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              ideoque relin­
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              quitur in ipſis vacuum;
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              cùm verò cucurbitula reſpiraverit; aër in e­
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              vacuatum locum ſuccedit, materiânon ampliùs attractâ,
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                <expan abbr="deciditq́ue">deciditque</expan>
                <lb/>
              cucurbitula.
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                <arrow.to.target n="marg68"/>
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            </p>
            <p type="margin">
              <s>
                <margin.target id="marg67"/>
                <emph type="italics"/>
              Cucurbitu­
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              la cur car­
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              nem attra­
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              hant.
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              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg68"/>
                <emph type="italics"/>
              Sphæra con­
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              cava, & aë­
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              re plena, cur
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              plùs aeris
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              per inflatio­
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              nem recipi­
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              at
                <expan abbr="ſecundũ">ſecundum</expan>
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              Heronem.
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              </s>
            </p>
            <p type="main">
              <s>Quartò,
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              conſtruatur Sphæra craſſitudinem habens laminæ, vt nè
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              facilè rumpatur, continensque circiter cotylas octo, & vndique præclu­
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              ſa;
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              & per foramen in ipſa factum immittamus
                <emph type="italics"/>
              Siphonem æreum,
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              hoc eſt, tubum gracilem, non contingentem locum, qui puncto perfora­
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              to ſecundùm diametrum opponitur, ita vt aqua fluere poſſit; alia autem
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              ipſius pars extra ſphæram emineat circiter digitos tres, ipſi〈qué〉 diligenter
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              adferruminetur, ambitu foraminis circa tubum ſtanno præcluſo, vt cùm
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              volumus ore per ſiphonem inflare, ſpiritus ex ſphærâ nullo modo excidat.
                <emph.end type="italics"/>
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              </s>
              <s>His factis,,
                <emph type="italics"/>
              inſpiciamus quæ contingunt. </s>
              <s>Aëre enim in ipſa exiſtente
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                <lb/>
              (quemadmodum & in aliis vaſis quæ vacua appellantur)
                <emph type="italics"/>
              totum­
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              que qui in ipsa locum replente, & per continuationem quandam ad eius
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              ambitum applicato, nullo denique loco, ut arbitrantur, penitus exiſten­
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              te vacuo; neque aquam immittere poſſemus, neque alium aërem, non
                <lb/>
              excedente priori aëre qui in ipsa erat; & ſi multa vi immiſſionem facia­
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              mus, priùs diſrumpetur vas, quàm aliquid ſuſcipiat, cùm plenum ſit: ne­
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              que enim aëris corpora in minorem magnitudinem contrahi poſſunt:
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              quare neceſſe erit, vt in ſeipſis habeant quædam intervalla, in quæ com­
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              preſſa minorem obtineant molem; hoc autem veriſimile non eſt, nullo
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              penitus exiſtente vacuo: & cùm corpora ad ſeſe applicentur ſecundùm
                <lb/>
              omnes ſuperficies, & ſimiliter ad vaſis ambitum, non poſſunt expulſa lo­
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              cum alicui facere, non exiſtente vacuo aliquo, quamobrem nullo modo
                <lb/>
              in ſphæram immittetur aliquid eorum, quæ ſunt extra, niſi excedat ali­
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              qua pars aëris priùs in ea contenti, ſiquidem totus locus conſtipatus est,
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              & continuatus, vt arbitrantur. </s>
              <s>At
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              experientiâ conſtat contrari­
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              um: nam
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              ſi quis ſiphonem ori admovens ſphæraminflet, multum im­
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              mittit ſpiritum, non excedente aëre, qui in ea eſt. </s>
              <s>Quod cùm ita ſem­
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              per contingat; manifeſtò oſtenditur,
                <expan abbr="contractionẽ">contractionem</expan>
              fieri
                <expan abbr="corporũ">corporum</expan>
              in ſphæra
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              exiſtentium in vacua implicata: contractio autem præter naturam fit,
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              ob immiſſionis violentiam. </s>
              <s>Si igitur aliquis inflans, & ad ipſum os ma­
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              num apponens, ſtatim digito ſiphonem obturet; manebit omni tempore
                <emph.end type="italics"/>
              </s>
            </p>
          </chap>
        </body>
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