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

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            <s xml:id="echoid-s3969" xml:space="preserve">
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            modo dichiarato; </s>
            <s xml:id="echoid-s3970" xml:space="preserve">adunque anco l’aſceſa. </s>
            <s xml:id="echoid-s3971" xml:space="preserve">L’eſperienza poi
              <lb/>
            è ſtata, che hauendo ſpinto galleggianti in diuerſi vaſi, & </s>
            <s xml:id="echoid-s3972" xml:space="preserve">
              <lb/>
            hauendo oſſeruato la ſuperficie dell’acqua, l’hò ſempre
              <lb/>
            veduta la medema, che s andaua alzando con tutti quelli
              <lb/>
            corpuſcoli, e lanugini, che le ſopraſtauano, & </s>
            <s xml:id="echoid-s3973" xml:space="preserve">in ſporcaua-
              <lb/>
            no. </s>
            <s xml:id="echoid-s3974" xml:space="preserve">Mà quando il vaſo è più che doppio del galleggiante,
              <lb/>
            hò notato qualche varietà tanto maggiore, e più ſenſibile
              <lb/>
            quanto è maggiore. </s>
            <s xml:id="echoid-s3975" xml:space="preserve">Al qual propoſito, credo che V. </s>
            <s xml:id="echoid-s3976" xml:space="preserve">S. </s>
            <s xml:id="echoid-s3977" xml:space="preserve">ha-
              <lb/>
            uerà oſſeruato infinite volte che, ò ſputando nell’ acqua
              <lb/>
            ſtagnante, ò laſciandoui cadere qualche ſaſſetto, che nel
              <lb/>
            luogo, oue cade ſi fà cẽtro, dal quale principiano vno, ò più
              <lb/>
            circoli, che eſtendono le loro circonferenze ſino ad vn
              <lb/>
            certo ſegno, che ſuaniſcono. </s>
            <s xml:id="echoid-s3978" xml:space="preserve">Queſti non ſono altro che l’-
              <lb/>
            acqua ſolleuata ſopra il primo liuello per l’ingreſſo, ò to-
              <lb/>
            tale, ò partiale in eſſa del corpicciolo caduto, la quale ſi
              <lb/>
            ſpande per di ſopra per ridurſi alla perfetta liuellatione.
              <lb/>
            </s>
            <s xml:id="echoid-s3979" xml:space="preserve">Quì certo le parti dell’acqua fatte aſcendere, ſe ſubintrano
              <lb/>
            ſotto l’altre, e ſe le pigliano il capo, come ha bbiamo det-
              <lb/>
            to, ciò non ſuccede che in poca diſtanza. </s>
            <s xml:id="echoid-s3980" xml:space="preserve">Tanto credo che
              <lb/>
            ſucceda nell’immerſione del galleggiantein vaſi larghi più
              <lb/>
            del doppiò d’eſſo; </s>
            <s xml:id="echoid-s3981" xml:space="preserve">credo che l’acqua, che ſubintra ſia vgua-
              <lb/>
            le alla baſe del ſolido, che ſi ſommerge; </s>
            <s xml:id="echoid-s3982" xml:space="preserve">e che leuandoſi in
              <lb/>
            capo la ſuperiore, la vadi alzando ſopra il primo liuello di
              <lb/>
            modo che queſta ſi vada diffondendo come più alta ſopra
              <lb/>
            l’altra. </s>
            <s xml:id="echoid-s3983" xml:space="preserve">Hò immerſo vn galleggiante in vn maſtello aſſai
              <lb/>
            largo, & </s>
            <s xml:id="echoid-s3984" xml:space="preserve">hò oſſeruato che la lanugine, che ſopraſtaua all’-
              <lb/>
            acqua, ſecondo che il galleggiante più s’immergeua, più
              <lb/>
            s’allontanaua da eſſo, e s’accoſtaua alli lati del maſtello. </s>
            <s xml:id="echoid-s3985" xml:space="preserve">
              <lb/>
            Segno che nell’immerſione ſaliua certamente dell’ acqua
              <lb/>
            ſopra la ſuprema ſuperficie, e ſi ſpandeua verſo li lati. </s>
            <s xml:id="echoid-s3986" xml:space="preserve">Nel-
              <lb/>
            la ſolleuatione poi del medemo galleggiante queſta lanu-
              <lb/>
            gine di nuouo s’accoſtaua ad eſſo, per la diſceſa certamen-
              <lb/>
            te che faceua l’acqua vicina al galleggiante, che lo circon-
              <lb/>
            daua; </s>
            <s xml:id="echoid-s3987" xml:space="preserve">nel luogo laſciato della quale diſcendeua la più lon-
              <lb/>
            tana per liuellarſi. </s>
            <s xml:id="echoid-s3988" xml:space="preserve">Il che ſuccedēdo in queſta guiſa quãdo il
              <lb/>
            vaſo è più che doppio del galleggiante, in realtà non aſ-
              <lb/>
            cende, e diſcende tutta l’acqua AFLB, ma certamente non
              <lb/>
            minore del medemo galleggiante. </s>
            <s xml:id="echoid-s3989" xml:space="preserve">Il che a noibaſta </s>
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