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

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            <pb xlink:href="051/01/092.jpg" pagenum="61"/>
            <p type="margin">
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              Fons ad S.
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              Georgium
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              Venetijs.
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              </s>
            </p>
            <p type="main">
              <s>
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              Protheoria III.
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              </s>
            </p>
            <p type="main">
              <s>
                <emph type="center"/>
              PROTHEORIA
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              TERTIA.
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              </s>
            </p>
            <p type="main">
              <s>
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              Devi Rarefactiva; ſeu de tertio Hydro-pnev­
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              maticarum Machinarum Principio.
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              </s>
            </p>
            <p type="main">
              <s>
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              §. I.
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              </s>
            </p>
            <p type="main">
              <s>
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              Rarefactionis vis, & effectus mirabiles.
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              </s>
            </p>
            <p type="main">
              <s>RArefactionem ingentes ſuppeditare vires vt
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              alijs corporibus, ita aquæ & aëri, ad ea in omnem ſi­
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              tus differentiam impellendam, multòque magis ad
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              hydro-pnevmatica omnis generis technaſmata mo­
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              lienda; is ſolus ignorare poteſt, qui ſtupendos ipſius effectus igno­
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              rat. </s>
              <s>videmus quotidie, miramurque, ac plangimus ſtragem,
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                <arrow.to.target n="marg119"/>
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              quam
                <foreign lang="grc">πολιο
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                χῃταὶ</foreign>
              nitrato & ſulphureo pulvere intra bombarda­
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              rum militarium anguſtias rarefacto edunt, in ſternendis non ho­
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              minibus tantùm, ſed ædibus, turribus, propugnaculis, atque
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              adeo vrbibus integris. </s>
              <s>Non Iovis tantummodo fulmina imita­
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              tur rarefactio in bombardis, ſed Plutonis etiam iras æmulatur in
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              ſubterraneis cuniculis; tantò pernicioſiore ſtrage, quantò mi­
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              nùs patente. </s>
              <s>Excavant Martiales Architecti à loco obſidionis
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                <arrow.to.target n="marg120"/>
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              ad vſque propugnaculum, cui ruinam minantur, viam anfra­
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              ctuoſam, anguſtamque, magneticæ pixidis ductu, uti inter alios
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              docet P. Athanaſius Kircherus lib. 2. de Arte Magnet. par. 2. cap. 1.
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              Probl. 7. & nos in Pantometro Kircherianolib. 5. Ichnographi­
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              co Probl. 8. </s>
              <s>Sub loco deinde ruinæ deſtinato Cameram con­
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              ſtruunt laxiorem, eamque implent pulveris tormentarij vaſis,
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              & oſtium claudunt, relicto exiguo foramine, perque viam totam
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              ignis pabulum ſternunt, & egreſſi ignem applicant; qui ſerpens
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              per viam accendit pulveris maſſam omnem Camerâ concluſam,
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              itàque rarefacit, dilatatque, ut anguſtiarum impatiens, & laxio­
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              rem quærens locum, impoſitam ſibi molem diſiiciat horribili
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                <arrow.to.target n="marg121"/>
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              fremitu, nec minori terrore, quàm damno. </s>
              <s>Nihil unquam
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              magis ſimile terræ motui, qui & ipſe rarefactionis eſt effectus </s>
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