Angeli, Stefano degli, Della gravita' dell' aria e fluidi : esercitata principalmente nelli loro homogenei

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          <p>
            <s xml:id="echoid-s2761" xml:space="preserve">
              <pb o="4" file="00098" n="98" rhead="DIALOGO"/>
            dopò hauer detto, che il mercurio ſaliſca ſin’all’altezza d’-
              <lb/>
            vn braccio Fiorentino, & </s>
            <s xml:id="echoid-s2762" xml:space="preserve">vn quarto, dicono le ſeguenti pa-
              <lb/>
            role. </s>
            <s xml:id="echoid-s2763" xml:space="preserve">_Queſt’ altezza quantunque pochiſſimo per esterni accidenti di_
              <lb/>
            _calore, e di freddo, e alquanto più, per le staggioni varie, e ſtati di-_
              <lb/>
            _uerſi dell’ aria ſi ſia oſſeruata variare, come da vna lunghiſſima ſerie_
              <lb/>
            _di noſtre oſſeruationi manifeſtamente appare; </s>
            <s xml:id="echoid-s2764" xml:space="preserve">tuttauia per eſſer tali_
              <lb/>
            _variationi aſſai piccole, ſarà da quì auanti denominata ſempre_
              <lb/>
            _della ſteßa miſura d’vn braccio, e vn quarto, come la più proſſima di_
              <lb/>
            _qualunque altra_. </s>
            <s xml:id="echoid-s2765" xml:space="preserve">Stando adunque ciò, potria eſſere che di
              <lb/>
            queſte diuerſità di ſalite del mercurio nel medemo luogo,
              <lb/>
            cioè alle radici del monte, ò al piano della torre dopò rica-
              <lb/>
            lato il Baroſcopio, ne foſſe cagione il diuerſo calore intro-
              <lb/>
            dotto nell’aria, ò altra uarietà in eſſa proueniente da
              <lb/>
            maggior, ò minor imgombramento di nuole, ò altri ac-
              <lb/>
            cidenti diuerſiſſimi.</s>
            <s xml:id="echoid-s2766" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2767" xml:space="preserve">_Cont_. </s>
            <s xml:id="echoid-s2768" xml:space="preserve">Benche queſte dottrine, & </s>
            <s xml:id="echoid-s2769" xml:space="preserve">eſperienze ſiano veriſſime;
              <lb/>
            </s>
            <s xml:id="echoid-s2770" xml:space="preserve">nulladimeno noi non vogliamo che habbino luogo in que-
              <lb/>
            ſto caſo. </s>
            <s xml:id="echoid-s2771" xml:space="preserve">Perche ſe da eſſe haueſſe hauuto origine queſto
              <lb/>
            Fenomeno, crediamo che il Sig. </s>
            <s xml:id="echoid-s2772" xml:space="preserve">Sinclaro ciò hauerebbe co-
              <lb/>
            noſciuto; </s>
            <s xml:id="echoid-s2773" xml:space="preserve">e non ſarebbe ricorſo alla grauità del mercurio. </s>
            <s xml:id="echoid-s2774" xml:space="preserve">
              <lb/>
            Più recondita adunque, & </s>
            <s xml:id="echoid-s2775" xml:space="preserve">aſtruſa è la ſua cauſa; </s>
            <s xml:id="echoid-s2776" xml:space="preserve">e biſogna
              <lb/>
            procurar d’indagarla.</s>
            <s xml:id="echoid-s2777" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2778" xml:space="preserve">_Mat_. </s>
            <s xml:id="echoid-s2779" xml:space="preserve">Faciaſi quello che comandano. </s>
            <s xml:id="echoid-s2780" xml:space="preserve">Tanto più che ſe bene
              <lb/>
            forſe non caueremo dal pozzo la vera cagione, peſchare-
              <lb/>
            mo nulladimeno per auentura qualche coſa in altri propo-
              <lb/>
            ſiti, che non s’hauremo da pentire d’hauer ſparſo le fatiche
              <lb/>
            al vento. </s>
            <s xml:id="echoid-s2781" xml:space="preserve">E per caminare ordinatamente, potiamo conſi-
              <lb/>
            derare, che dicendo il Sig. </s>
            <s xml:id="echoid-s2782" xml:space="preserve">Sinclaro ſucceder queſt’ effetto
              <lb/>
            quando il mercurio viene agitato, potiamo confeſſare ra-
              <lb/>
            gioneuolmente che di queſto Fenomeno ne ſia cagione la
              <lb/>
            pura agitatione. </s>
            <s xml:id="echoid-s2783" xml:space="preserve">Reſta che conſideriamo come ciò poſſa
              <lb/>
            fuccedere. </s>
            <s xml:id="echoid-s2784" xml:space="preserve">Io à queſto propoſito noto vn’altra oſſeruatio-
              <lb/>
            ne del Sig Sinclaro _nel lib_. </s>
            <s xml:id="echoid-s2785" xml:space="preserve">1. </s>
            <s xml:id="echoid-s2786" xml:space="preserve">_Dial. </s>
            <s xml:id="echoid-s2787" xml:space="preserve">3. </s>
            <s xml:id="echoid-s2788" xml:space="preserve">n. </s>
            <s xml:id="echoid-s2789" xml:space="preserve">2_. </s>
            <s xml:id="echoid-s2790" xml:space="preserve">oue dice, che ſe riem-
              <lb/>
            pito il Baroſcopio d’argentouiuo, ſe le caccierà dentro più
              <lb/>
            volte vn ſottiliſſimo fil di ferro, queſto farà vſcir fuori dall’-
              <lb/>
            detto argentouiuo le particole dell’aria, che ſtanno naſco-
              <lb/>
            ſte entro eſfo. </s>
            <s xml:id="echoid-s2791" xml:space="preserve">Nel qual caſo purgato che ſia il mercurio
              <lb/>
            dall’aria, ſalirà vn poco più, che quando non s’vſa </s>
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