Casati, Paolo, De igne dissertationes physicae, 1686

Table of figures

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            <s xml:id="echoid-s1649" xml:space="preserve">
              <pb o="49" file="0061" n="61" rhead="De ignis loco."/>
            pra aërem, atque idcirco aër ſuperior comprimere non poteſt in-
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            ferìorem. </s>
            <s xml:id="echoid-s1650" xml:space="preserve">An non corporibus certum pondus habentibus in aëre,
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            ſi intrà aquam expendantur, tantum decedit ponderis, quanta
              <lb/>
            eſt aquæ ſub eaďem mole grauitas? </s>
            <s xml:id="echoid-s1651" xml:space="preserve">id autem ſimili ſemper ratione
              <lb/>
            contingit, ſiuè corpus aliquod in examen vocatum vix infra ſu-
              <lb/>
            perficiem aquæ, ſiuè altiùs deprimatur: </s>
            <s xml:id="echoid-s1652" xml:space="preserve">quod ſi cylindrus aqueus
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            deorſum vrgeret corpus altiùs demerſum, vtique illius grauitas
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            maior appareret; </s>
            <s xml:id="echoid-s1653" xml:space="preserve">eſt autem ſemper eadem: </s>
            <s xml:id="echoid-s1654" xml:space="preserve">licet igitur inferre,
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            non premi demerſum corpus ab imminente aquâ, atque adeò
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            nec ab aëre imminente premi ſubiectum Mercurium, aut aërem
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            infimum craſſiorem, cùm ſimiliter aëre circumfundatur.</s>
            <s xml:id="echoid-s1655" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1656" xml:space="preserve">Dand. </s>
            <s xml:id="echoid-s1657" xml:space="preserve">Sibi tamen videntur Philoſophi illi deprehendiſſe cor-
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            pus grauius vrgeri ab impoſito corpore minùs gràui, hoc experi-
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            mento. </s>
            <s xml:id="echoid-s1658" xml:space="preserve">Aliquid Mercurij ſtatuerunt in vaſe, illique vitream fi-
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            ſtulam vtrinque hiantem immiſerunt. </s>
            <s xml:id="echoid-s1659" xml:space="preserve">Mercurius in fiſtulâ ean-
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            dem ſuperficiem cum Mercurio vaſis obtinebat. </s>
            <s xml:id="echoid-s1660" xml:space="preserve">Tum Mercurio
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            in vaſe afſuderunt aquam ad aliquot digitorum altitudinem, & </s>
            <s xml:id="echoid-s1661" xml:space="preserve">ma-
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            nifeſtè obſeruarunt Mercurium in fiſtulâ aliquantulum aſcendere:
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            </s>
            <s xml:id="echoid-s1662" xml:space="preserve">id quod tribuendum videtur grauitati aëris aquam vrgentis, & </s>
            <s xml:id="echoid-s1663" xml:space="preserve">
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            aquæ ſubiectum Mercurium prementis, illumque in fiſtulam, vbi ſo-
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            lus aëris cylindrus grauitat, extrudentis.</s>
            <s xml:id="echoid-s1664" xml:space="preserve"/>
          </p>
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            <s xml:id="echoid-s1665" xml:space="preserve">Maur. </s>
            <s xml:id="echoid-s1666" xml:space="preserve">Dabis veniam, Gradonice, ſi vnum hìc quęram: </s>
            <s xml:id="echoid-s1667" xml:space="preserve">nimi-
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            rum, vtrùm tota aqua Mercurium, & </s>
            <s xml:id="echoid-s1668" xml:space="preserve">totus aëris aquæ incum-
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            bentis cylindrus vrgeat Mercurium, vt in fiſtulâ aſcendat. </s>
            <s xml:id="echoid-s1669" xml:space="preserve">Si vni-
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            uerſa aquæ & </s>
            <s xml:id="echoid-s1670" xml:space="preserve">aëris grauitas vrget, igitur & </s>
            <s xml:id="echoid-s1671" xml:space="preserve">in fiſtulâ ſupernè clau-
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            ſâ integer aëris cylindrus Mercurio innitens ſuſpendit in fiſtulâ
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            Mercurium; </s>
            <s xml:id="echoid-s1672" xml:space="preserve">atque pro vaſis amplitudine plus aſcenderet Mercurij:
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            </s>
            <s xml:id="echoid-s1673" xml:space="preserve">id quod eſt falſum. </s>
            <s xml:id="echoid-s1674" xml:space="preserve">Sin autem vnicus cylindrulus ex aquâ & </s>
            <s xml:id="echoid-s1675" xml:space="preserve">aë-
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            re conflatus parem cum fiſtulæ oſculo baſim habens ille eſt, qui
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            Mercurium in fiſtulam intrudat, non niſi voluntariè cylindrum
              <lb/>
            vnum aquæ inter cœteros deſignabis; </s>
            <s xml:id="echoid-s1676" xml:space="preserve">neque enim hùc aduocari
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            poteſt ſola aëris grauitas; </s>
            <s xml:id="echoid-s1677" xml:space="preserve">ſiquidem Mercurius in hac hiante fiſtulâ
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            non aſcendit ad ſuperficiem aquæ circumfuſæ, ac proinde cylindrus
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            aërius imminens Mercurio fiſtulæ longior eſt, & </s>
            <s xml:id="echoid-s1678" xml:space="preserve">grauior cylindro
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            exteriori aĕrio incumbente aquæ. </s>
            <s xml:id="echoid-s1679" xml:space="preserve">Nunc verò quoniam inchoatæ
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            tuæ diſputationi, Gradonice, per tuam humanitatem interuenire
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            mihi licuit, illi inſiſte.</s>
            <s xml:id="echoid-s1680" xml:space="preserve"/>
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            <s xml:id="echoid-s1681" xml:space="preserve">Grad. </s>
            <s xml:id="echoid-s1682" xml:space="preserve">Siaquam in aëre vas circumplectente, tanquam in </s>
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