Musschenbroek, Petrus van, Physicae experimentales, et geometricae de magnete, tuborum capillarium vitreorumque speculorum attractione, magnitudine terrae, cohaerentia corporum firmorum dissertationes: ut et ephemerides meteorologicae ultraiectinae

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          <head xml:id="echoid-head187" xml:space="preserve">CAPUT PRIMUM.</head>
          <head xml:id="echoid-head188" style="it" xml:space="preserve">De Adſcenſu Fluidi in tubos diverſarum longitudinum &
            <lb/>
          ejuſdem diametri.</head>
          <head xml:id="echoid-head189" xml:space="preserve">EXPERIMENTUM I.</head>
          <p>
            <s xml:id="echoid-s6593" xml:space="preserve">Confectus fuit ex vitro albo puriſſimoque Tubus, perfecte cy-
              <lb/>
            lindricus, 3 {1/2} pollices longus; </s>
            <s xml:id="echoid-s6594" xml:space="preserve">cujus diameter interna erat {1/36}
              <lb/>
            pollicis. </s>
            <s xml:id="echoid-s6595" xml:space="preserve">Quia modo ante erat in Igne conflatus, erat quoque ſic-
              <lb/>
            ciſſimus, hunc utrimque apertum forcipe cepi tenello, ne manu
              <lb/>
            prehenſus calefieret, atque aër interioris cavitatis rarefieret, quo
              <lb/>
            experimenti ſucceſſus perturbaretur: </s>
            <s xml:id="echoid-s6596" xml:space="preserve">Tubus perpendiculariter ad
              <lb/>
            horizontem immiſſus fuit aquæ puræ frigidæque, ut tamen infi-
              <lb/>
            ma ora vix infra ſuperficiem liquoris demergeretur. </s>
            <s xml:id="echoid-s6597" xml:space="preserve">Hoc facto,
              <lb/>
            Aqua ſuâ ſponte rapta fuit ſurſum in tubum ad altitudinem 20 linea-
              <lb/>
            rum, ibique permanſit, menſurâ captâ a ſuperficie Aquæ in Va-
              <lb/>
            ſculo, ad ſuperficiem ſupremam Aquæ in tubo: </s>
            <s xml:id="echoid-s6598" xml:space="preserve">Aqua non cum
              <lb/>
            æquabili celeritate ab initio ad finem adſcendit, ſed primum ce-
              <lb/>
            lerrime, deinde lentius, tandem lentiſſime cum propemodum ad
              <lb/>
            20 linearum altitudinem pervenit.</s>
            <s xml:id="echoid-s6599" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s6600" xml:space="preserve">Erat hic primus eventus, explorandum duxi, an hic ſemper
              <lb/>
            idem foret, repetito aliquoties Experimento, an autem Aqua ad
              <lb/>
            majorem minoremve altirudinem elevaretur; </s>
            <s xml:id="echoid-s6601" xml:space="preserve">quamobrem ori immiſſâ
              <lb/>
            extremitate tubi, quæ Aquæ immerſa fuerat, ſugendo tubum eva-
              <lb/>
            cuavi, ſimul curans ne pars ejus ſuperior, adhucdum ſicca, hu-
              <lb/>
            mectaretur: </s>
            <s xml:id="echoid-s6602" xml:space="preserve">Orificio tubi eodem Aquæ denuo impoſito, adſcen-
              <lb/>
            ſus accurate idem contigit, cum omnibus iiſdem phænomenis, & </s>
            <s xml:id="echoid-s6603" xml:space="preserve">
              <lb/>
            ad eandem altitudinem: </s>
            <s xml:id="echoid-s6604" xml:space="preserve">neque repetita tentamina differentiam ul-
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            lam dederunt.</s>
            <s xml:id="echoid-s6605" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s6606" xml:space="preserve">Quoniam animus eſt eruere cauſam horum phænomenorum ex
              <lb/>
            Experimentis, adhuc nihil explico, quamcunque enim cauſam af-
              <lb/>
            ferrem, eam nunc tanquam erutam ſupponere deberem, atque </s>
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