Weidler, Johann Friedrich, Jo. Friderici Weidleri Tractatus de machinis hydraulicis toto terrarum orbe maximis Marlyensi et Londinensi et aliis rarioribus similibus in quo mensurae prope ipsas machinas notatae describuntur, et de viribus earum luculenter disseritur

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            cum ualuula R
              <emph style="sub">1</emph>
            parum prematur, et nihil atmoſphae-
              <lb/>
            rae preſſui, in ſuperficies aquae in puteo ſtagnantis,
              <lb/>
            obſiſtat, haec per fiſtulam aſpirantem T aſcendet, et
              <lb/>
            recipientem P
              <emph style="sub">1</emph>
            replebit, ualuula uero R
              <emph style="sub">3</emph>
            relabetur et
              <lb/>
            deſcenſum aquarum impediet. </s>
            <s xml:id="echoid-s1802" xml:space="preserve">Interea temporis reci-
              <lb/>
            piens P2 ab aere uacuabitur, et repulſa anſa rectoris
              <lb/>
            uapor magna ui incumbet aquae recipiente P1 conten-
              <lb/>
            tae, eiusque ſuperato pondere, eam per QQQ exire,
              <lb/>
            et per fiſtulam S aſſurgere et in ſummo exundare co-
              <lb/>
            get. </s>
            <s xml:id="echoid-s1803" xml:space="preserve">Et ſimiliter alternate recipiens P2 implebitur et
              <lb/>
            uacuabitur aquis, et ita continuo aqua ex fiſtulae S
              <lb/>
            ſupremo orificio profluet, et ex imo puteo in locum,
              <lb/>
            in quem deſtinata eſt, expelletur. </s>
            <s xml:id="echoid-s1804" xml:space="preserve">Illud addo, ut cum
              <lb/>
            machina interiore motu acta, fiſtulam compreſſus ple-
              <lb/>
            nam reddidit, paruaj ciſterna X impleaturl, et fiſtula y y,
              <lb/>
            quae uocatur condenſationis, nutriatur, ex qua aqua fri-
              <lb/>
            gida ad uaporem condenſandum delabitur. </s>
            <s xml:id="echoid-s1805" xml:space="preserve">Paulo ſupra
              <lb/>
            ciſternam eſt alia fiſtula E, quae aquam ex fiſtula com-
              <lb/>
            preſſus deriuat in paruum lebetem, qui poſitus eſt, ad
              <lb/>
            maiorem L replendum, cum aqua maximam partem in
              <lb/>
            uaporem eſt reſoluta, quando autem hoc eſt neceſſa-
              <lb/>
            rium, ita conuerte epiſtomium E, ut nullum ſuperſit
              <lb/>
            commercium, inter fiſtulam compreſſus et paruum le-
              <lb/>
            betem D, tum fac exiguum ignem in B2, et aqua ſta-
              <lb/>
            tim efferueſcet, et uapor eius exitum non inueniens,
              <lb/>
            premet aquae ſuperficiem, ut per K et fiſtulam H in-
              <lb/>
            grediatur maiorem lebetem L, tamdiu autem fluet, do-
              <lb/>
            nec ſuperficies aquae in lebete D, humilior eſt fundo
              <lb/>
            fiſtulae H, tum enim uapor cum aqua mixtus, una pro-
              <lb/>
            rumpet, et ſtrepitu indicabit agitari machinam, et a-
              <lb/>
            quam ex D in L ſufficienti copia egeſtam eſſe, poſtea
              <lb/>
            conuerſo epiſtomio I, denuo aqua frigida ex S in </s>
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