Musschenbroek, Petrus van, Physicae experimentales, et geometricae de magnete, tuborum capillarium vitreorumque speculorum attractione, magnitudine terrae, cohaerentia corporum firmorum dissertationes: ut et ephemerides meteorologicae ultraiectinae

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            Experimenta Capitis primi. </s>
            <s xml:id="echoid-s8079" xml:space="preserve">Ex quibus igitur liquido conſtat cauſam
              <lb/>
            adſcenſus non ſitam eſſe, nec poni poſſe in ſolis liquoribus.</s>
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            <s xml:id="echoid-s8081" xml:space="preserve">3. </s>
            <s xml:id="echoid-s8082" xml:space="preserve">Ipſos igitur Tubos adeamus, atque in iis quæramus cauſam:
              <lb/>
            </s>
            <s xml:id="echoid-s8083" xml:space="preserve">Adſcendunt fluida in Tubos, motus igitur excitatur; </s>
            <s xml:id="echoid-s8084" xml:space="preserve">hic potentiam
              <lb/>
            moventem & </s>
            <s xml:id="echoid-s8085" xml:space="preserve">vim ſupponit, oportet igitur ut in ipſo Tubo vis la-
              <lb/>
            teat fluida elevans & </s>
            <s xml:id="echoid-s8086" xml:space="preserve">in ſe rapiens: </s>
            <s xml:id="echoid-s8087" xml:space="preserve">hoc mecum alii quoque animad-
              <lb/>
            verterunt Philoſophi: </s>
            <s xml:id="echoid-s8088" xml:space="preserve">ubi & </s>
            <s xml:id="echoid-s8089" xml:space="preserve">quænam hæc vis eritin Tubo quieſcente? </s>
            <s xml:id="echoid-s8090" xml:space="preserve">
              <lb/>
            vel hæret in cavitate, vel in Tubi ſolida ſubſtantia, inde in cavum
              <lb/>
            exeuns: </s>
            <s xml:id="echoid-s8091" xml:space="preserve">aſt poſito Tubo in vacuo nihil eſt in cavitate, quod ſen-
              <lb/>
            ſus aut ratio detegit: </s>
            <s xml:id="echoid-s8092" xml:space="preserve">adeoque erit in ſolida Tubiſubſtantia; </s>
            <s xml:id="echoid-s8093" xml:space="preserve">qualis hæc
              <lb/>
            erit? </s>
            <s xml:id="echoid-s8094" xml:space="preserve">ea, quæ admodum univerſalis eſt, qua duo corpora aſeremota,
              <lb/>
            ſua ſponte accedunt; </s>
            <s xml:id="echoid-s8095" xml:space="preserve">hanc Attractionem vocamus, quia eo nomi-
              <lb/>
            ne uti voluerunt Philoſophi, poſſet enim appellari alio quocunque
              <lb/>
            nomine, & </s>
            <s xml:id="echoid-s8096" xml:space="preserve">forſitan haud pejus, Acceſſus mutuus: </s>
            <s xml:id="echoid-s8097" xml:space="preserve">Obſervamus
              <lb/>
            enim in innumeris phænomenis, quæ corpora, fere omnia hacte-
              <lb/>
            nus cognita, edunt, eam dari Legem Naturæ, ut ſi a ſe mutuo
              <lb/>
            parum abſint bina, ad ſe accedant ſua ſponte, vel ſi alterutrum te-
              <lb/>
            neatur firmum, accedat alterum; </s>
            <s xml:id="echoid-s8098" xml:space="preserve">hæc ſe attingentia, vi ſe am-
              <lb/>
            plectuntur inſigni, qua ſeparationi reſiſtunt: </s>
            <s xml:id="echoid-s8099" xml:space="preserve">non ex Hypotheſi
              <lb/>
            quadam hæc profero, ſed tantum ex obſervatis phænomenis: </s>
            <s xml:id="echoid-s8100" xml:space="preserve">hanc
              <lb/>
            legem admittunt omnes Philoſophi, qui, non meditabundi ſedent
              <lb/>
            modo in muſæo, ſed ipſam Naturam explorant, & </s>
            <s xml:id="echoid-s8101" xml:space="preserve">obſervando
              <lb/>
            detegunt, quænam hæc moliatur. </s>
            <s xml:id="echoid-s8102" xml:space="preserve">Vi hujus legis omnia phæno-
              <lb/>
            mena Tuborum Capillarium ſiunt: </s>
            <s xml:id="echoid-s8103" xml:space="preserve">Immittatur enim Tubus novus
              <lb/>
            liquori, hunc adſe trahet, elevabitaliquam partem, quæ externæ ſu-
              <lb/>
            perſiciei adhærebit, donec gravitas liquoris cum hac viin æquilibrio
              <lb/>
            ſit: </s>
            <s xml:id="echoid-s8104" xml:space="preserve">elevabit intus in cavitatem ſuam partem liquoris aliam, & </s>
            <s xml:id="echoid-s8105" xml:space="preserve">quia ſu-
              <lb/>
            perficies cavæ ſibi propinquæ ſunt, ſeſeque reſpiciunt, mutuâque vi
              <lb/>
            ſibi auxiliantur, elevabitur major quantitas; </s>
            <s xml:id="echoid-s8106" xml:space="preserve">atque ad majorem
              <lb/>
            altitudinem in cavum adſcendet, donec quoquc inter gravitatem
              <lb/>
            ſublati liquoris & </s>
            <s xml:id="echoid-s8107" xml:space="preserve">vim elevantem detur æquilibrium. </s>
            <s xml:id="echoid-s8108" xml:space="preserve">Quando Tu-
              <lb/>
            bus ad horizontem parum inclinatur, atque Aqua pattem ſuperio-
              <lb/>
            rem occupans deorſum ruit, uti in Experimento. </s>
            <s xml:id="echoid-s8109" xml:space="preserve">VIII. </s>
            <s xml:id="echoid-s8110" xml:space="preserve">Cap. </s>
            <s xml:id="echoid-s8111" xml:space="preserve">I. </s>
            <s xml:id="echoid-s8112" xml:space="preserve">de-
              <lb/>
            ſcendit partim gravitate, partim hac vi attrahente, quam Tubi
              <lb/>
            pars inferior habet, ſi
              <unsure/>
            vero eo uſque deſcenderit liquor, ut vispar-
              <lb/>
            tis ſuperioris Tubi, quam reliquit, deorſum ruendo ſuperet </s>
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