Casati, Paolo, De igne dissertationes physicae, 1686

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            <s xml:id="echoid-s1864" xml:space="preserve">
              <pb o="57" file="0069" n="69" rhead="De ignis loco."/>
            tiùs, & </s>
            <s xml:id="echoid-s1865" xml:space="preserve">impellendo aërem ſiphonis deprimere in altero crure
              <lb/>
            Mercurium; </s>
            <s xml:id="echoid-s1866" xml:space="preserve">viciſſim verò depreſſo vaſe, quia longior eſſet & </s>
            <s xml:id="echoid-s1867" xml:space="preserve">gra-
              <lb/>
            uior cylindrus Mercurij in fiſtulâ, quàm ſuſtineri poſſit ab exte-
              <lb/>
            riori aëre contra vim elaſticam aëris intercluſi, illum deſcendere,
              <lb/>
            & </s>
            <s xml:id="echoid-s1868" xml:space="preserve">cedendo permittere, vt alter cylindrus aërius ſurſum extrudat
              <lb/>
            Mercurium in altero ſiphonis crure.</s>
            <s xml:id="echoid-s1869" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1870" xml:space="preserve">Dand. </s>
            <s xml:id="echoid-s1871" xml:space="preserve">Hæc mihi quoquè videntur eorum placitis conſentanea:
              <lb/>
            </s>
            <s xml:id="echoid-s1872" xml:space="preserve">licèt diſficile ſit intelligere cylindrum aërium vaſi immoto inſi-
              <lb/>
            ſtentem ſurſum repelli vi alterius non maioris cylindri aërij, dum
              <lb/>
            vrget Mercurium, qui in eodem vaſe immoto ſuccreſcit.</s>
            <s xml:id="echoid-s1873" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1874" xml:space="preserve">Maur. </s>
            <s xml:id="echoid-s1875" xml:space="preserve">Ego verò inter duos illos aërios cylindros exteriùs pre-
              <lb/>
            mentes vaſa nullam aliam video factam, elato altero vaſe, va-
              <lb/>
            rietatem, præter alterius cylindri diminutionem dig. </s>
            <s xml:id="echoid-s1876" xml:space="preserve">4.</s>
            <s xml:id="echoid-s1877" xml:space="preserve">, cui alti-
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            tudini reſpondet Mercurialis cylindri altitudo, quæ nullâ oculo-
              <lb/>
            rum acie perſpici valeat, quippe quæ ad digitos 4 ſe habet vt gra-
              <lb/>
            uitas aëris ad grauitatem Mercurij: </s>
            <s xml:id="echoid-s1878" xml:space="preserve">igitur in hoc crure altiùs de-
              <lb/>
            merſo attollitur Mercurius ſupra Mercurium vaſis ad altitudinem
              <lb/>
            ferè priori æqualem, hoc eſt digitos ferè 4 ſupra punctum, vbi
              <lb/>
            deſinebat prior altitudo. </s>
            <s xml:id="echoid-s1879" xml:space="preserve">Quia verò quantum iſte attollitur, tan-
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            tundem alius Mercurius in reliquo crure deprimitur propter aërem
              <lb/>
            intermedium compreſſioni repugnantem, neceſſe eſt alium Mer-
              <lb/>
            curialem cylindrum fuiſſe diminutum digitis ferè 4, tantâ ſcilicet
              <lb/>
            grauitate, quantam grauitatem habet cylindrus aërius altitudinis,
              <lb/>
            quæ ad altitudinem dig. </s>
            <s xml:id="echoid-s1880" xml:space="preserve">4 ſe habeat vt grauitas Mercurij ad gra-
              <lb/>
            uitatem aëris ſecundùm ſpeciem: </s>
            <s xml:id="echoid-s1881" xml:space="preserve">cylindrus tamen ille aërius vaſi
              <lb/>
            imminens non eſt diminutus niſi, quantum ſuccreſcit in vaſe Mer-
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            curij ſuperſicies; </s>
            <s xml:id="echoid-s1882" xml:space="preserve">id quod vix conſpicuum eſt, ſi vas ſit amplum.
              <lb/>
            </s>
            <s xml:id="echoid-s1883" xml:space="preserve">Quod itaque attinet ad duos aërios cylindros ſuſtinentes Mercu-
              <lb/>
            rium in ſiphonis cruribus, eorum grauitas vix intelligi poteſt
              <lb/>
            diminuta, cum eorum altitudines ſolùm 4 digitis diſcrepent; </s>
            <s xml:id="echoid-s1884" xml:space="preserve">aë-
              <lb/>
            ris in ſiphone intercepti virtus elaſtica non eſt aucta; </s>
            <s xml:id="echoid-s1885" xml:space="preserve">Mercurij in
              <lb/>
            ſiphone grauitas eſt minor, videlicet in altero quidem crure, cu-
              <lb/>
            ius vas immotum fuit, diminuta digitis ferè 4, in altero verò
              <lb/>
            modicum quid, quantum fert altitudo reciproca grauitatum ſe-
              <lb/>
            cundùm ſpeciem, hoc eſt omnino dig.</s>
            <s xml:id="echoid-s1886" xml:space="preserve">4 ferè. </s>
            <s xml:id="echoid-s1887" xml:space="preserve">Qua igitur ratio-
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            ne contingat æquilibrium inter exteriores aëris cylindros grauita-
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            ris vix imminutæ & </s>
            <s xml:id="echoid-s1888" xml:space="preserve">inæqualis, atque Mercurium diminutum in
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            cruribus ſiphonis additâ vi elaſticâ aëris intercluſi, non ſatis </s>
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