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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          <p>
            <s xml:id="echoid-s1552" xml:space="preserve">
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            dum eſt ſolidis, cui nemo adſtipulabitur; </s>
            <s xml:id="echoid-s1553" xml:space="preserve">ſed plumbum interpoſi-
              <lb/>
            tum fuerit vel non, eadem manet actio Ferri in Magnetem; </s>
            <s xml:id="echoid-s1554" xml:space="preserve">quare
              <lb/>
            niſi aliquid abſurdiſſimum ſupponatur, fluidum ejuſmodi fingi ne-
              <lb/>
            quit.</s>
            <s xml:id="echoid-s1555" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1556" xml:space="preserve">Sed ulterius hæc hypotheſis fluidi alicujus externi, vel effluvio-
              <lb/>
            rum Magneticorum enecanda erit, quod ope ſequentium experi-
              <lb/>
            mentorum ſatis facile fiet.</s>
            <s xml:id="echoid-s1557" xml:space="preserve"/>
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        <div xml:id="echoid-div34" type="section" level="1" n="34">
          <head xml:id="echoid-head42" xml:space="preserve">EXPERIMENTUM. XXVI.</head>
          <p>
            <s xml:id="echoid-s1558" xml:space="preserve">Magnes & </s>
            <s xml:id="echoid-s1559" xml:space="preserve">lamella aut virga chalybea vel ferrea ſeorſim accura-
              <lb/>
            tiſſime ponderentur, Magneti affricetur lamella aut virga, tumque
              <lb/>
            iterum amborum pondus ſeorſim exploretur, deprehenditur pon-
              <lb/>
            dus in utroque corpore manſiſſe idem.</s>
            <s xml:id="echoid-s1560" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1561" xml:space="preserve">Primus hoc Experimentum inſtituit Normannus capiendo 2 vel
              <lb/>
            3 fragmenta oblonga fili ferrei, quæ primum in aurificis ſtatera pon-
              <lb/>
            deravit; </s>
            <s xml:id="echoid-s1562" xml:space="preserve">tum Magneti affricta iterum ponderavit, idemque man-
              <lb/>
            ſiſſe deprehendit pondus vid New. </s>
            <s xml:id="echoid-s1563" xml:space="preserve">Attract. </s>
            <s xml:id="echoid-s1564" xml:space="preserve">cap. </s>
            <s xml:id="echoid-s1565" xml:space="preserve">5. </s>
            <s xml:id="echoid-s1566" xml:space="preserve">Gilbertus idem
              <lb/>
            fecit Lib. </s>
            <s xml:id="echoid-s1567" xml:space="preserve">5. </s>
            <s xml:id="echoid-s1568" xml:space="preserve">Cap. </s>
            <s xml:id="echoid-s1569" xml:space="preserve">3. </s>
            <s xml:id="echoid-s1570" xml:space="preserve">Merſennus & </s>
            <s xml:id="echoid-s1571" xml:space="preserve">Gaſſendus apud Zygoſtatam mo-
              <lb/>
            netalem libellâ accuratiſſima pondus explorantes ferri ante & </s>
            <s xml:id="echoid-s1572" xml:space="preserve">poſt
              <lb/>
            applicationem ad Magnetem, idem manſiſſe notant, vid. </s>
            <s xml:id="echoid-s1573" xml:space="preserve">Gaſſen-
              <lb/>
            dusin Lib. </s>
            <s xml:id="echoid-s1574" xml:space="preserve">x. </s>
            <s xml:id="echoid-s1575" xml:space="preserve">Diog. </s>
            <s xml:id="echoid-s1576" xml:space="preserve">Laertii pag. </s>
            <s xml:id="echoid-s1577" xml:space="preserve">200. </s>
            <s xml:id="echoid-s1578" xml:space="preserve">& </s>
            <s xml:id="echoid-s1579" xml:space="preserve">in Tomo 2. </s>
            <s xml:id="echoid-s1580" xml:space="preserve">operum pag. </s>
            <s xml:id="echoid-s1581" xml:space="preserve">129.
              <lb/>
            </s>
            <s xml:id="echoid-s1582" xml:space="preserve">Verum Whiſtonus hoc obſervatum dubium reddidit in Tractatu of
              <lb/>
            The dipping needle pag. </s>
            <s xml:id="echoid-s1583" xml:space="preserve">9. </s>
            <s xml:id="echoid-s1584" xml:space="preserve">leviusque fieri affirmat Ferrum poſtquam
              <lb/>
            Magneti applicatum fuit; </s>
            <s xml:id="echoid-s1585" xml:space="preserve">ſumſit enim virgam 4 pedes longam pon-
              <lb/>
            deris 4015 {3/8} granorum antequam Magnetem olfecerat, poſt appli-
              <lb/>
            cationem pondus decreverat 2 granis: </s>
            <s xml:id="echoid-s1586" xml:space="preserve">aliam ſumſit 4584 {1/8} granorum,
              <lb/>
            cujus pondus poſt applicationem ad Magnetem decrevit 2 {1/8} granis: </s>
            <s xml:id="echoid-s1587" xml:space="preserve">
              <lb/>
            aliam ſumſit 14792 {1/2} granorum, cujus pondus decrevit 2 {1/2} granis. </s>
            <s xml:id="echoid-s1588" xml:space="preserve">
              <lb/>
            Aliam adhibuit 65726 granorum, cujus pondus decrevit 14 granis,
              <lb/>
            teſtemque Experimentorum advocat Hauksbejum. </s>
            <s xml:id="echoid-s1589" xml:space="preserve">Deſiderio ca-
              <lb/>
            piebar ſimilia repetendi Experimenta ſumma cum cura, Libram ac-
              <lb/>
            curatiſſimam adhibui, quæ etiamſi magna ſatis ſit, nihilominus
              <lb/>
            {1/20}grani parte movebatur, onerata pondereLibrarum 2. </s>
            <s xml:id="echoid-s1590" xml:space="preserve">Ne igitur ferrum
              <lb/>
            cujus pondus explorarem, aliquid ageret in ipſam Libram, id ex filo
              <lb/>
            æneo longo 5 pedes ſuſpendi: </s>
            <s xml:id="echoid-s1591" xml:space="preserve">nolui enim Lanci imponere, quia
              <lb/>
            ejus margines circumflexi in ſe filum ferreum continent, ita </s>
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