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-s1690" xml:space="preserve">
              <pb o="71" file="0085" n="85" rhead="DE MAGNETE."/>
            ſolvit corpora, proſternit, diruit, diſſipat: </s>
            <s xml:id="echoid-s1691" xml:space="preserve">an igitur, qui cuncta
              <lb/>
            movet, ineptus erit profligandis effluviis Magneticis? </s>
            <s xml:id="echoid-s1692" xml:space="preserve">quodnam i-
              <lb/>
            taque hæc corporum genus erunt? </s>
            <s xml:id="echoid-s1693" xml:space="preserve">Si mole exilia, mobilia, & </s>
            <s xml:id="echoid-s1694" xml:space="preserve">ſolida,
              <lb/>
            quemadmodum omnium aliorum fluidorum partes ſunt comparatæ,
              <lb/>
            tum ab aliis corpuſculis in ipſa incurrentibus poterunt percuti, re-
              <lb/>
            tardari, retrorſum pelli, aliâ determinatione moveri, veluti cor-
              <lb/>
            pora majora; </s>
            <s xml:id="echoid-s1695" xml:space="preserve">ab Igne igitur & </s>
            <s xml:id="echoid-s1696" xml:space="preserve">flamma, cujus partes non poſſunt
              <lb/>
            non Effluviis occurrere, propellentur, atque idcirco directio Ver-
              <lb/>
            ſorii A B immutanda fuiſſet, eo immoto manente ſequitur non trans-
              <lb/>
            iiſſe Effluvia e Magnete per flammam, neque operari hunc lapidem
              <lb/>
            Fluidi aut Effluviorum quorumlibet ope.</s>
            <s xml:id="echoid-s1697" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1698" xml:space="preserve">Si quis cuncta argumenta, quæ adverſus hypotheſin Fluidi Aerei,
              <lb/>
            Ætherei, Effluviorum, quæ Magneticos operari effectus dicta fuerunt,
              <lb/>
            examinaverit, comparaverit inter ſe, ſibique addiderit, non poteſt
              <lb/>
            non eſſe convictus ab alia Magnetem regi cauſa, & </s>
            <s xml:id="echoid-s1699" xml:space="preserve">hæc fuiſſe quon-
              <lb/>
            dam ex hypotheſi modo aſſumta, ab Empedocle, Democrito, Leu-
              <lb/>
            ſippo, Epicuro, Lucretio, Carteſio, Sturmio aliiſque Clariſſimis
              <lb/>
            Viris, nequaquam demonſtrata, corruunt igitur ſua ſponte quæcun-
              <lb/>
            que alicui harum ſententiarum innituntur.</s>
            <s xml:id="echoid-s1700" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div37" type="section" level="1" n="37">
          <head xml:id="echoid-head45" xml:space="preserve">EXPERIMENTUM XXIX.</head>
          <p>
            <s xml:id="echoid-s1701" xml:space="preserve">Magnes, qui Verſorio obverſus, aut ſupra ferri limaturam reten-
              <lb/>
            tus, attrahentium ſuarum virium præclara edebat ſpecimina, igni
              <lb/>
            commiſſus fuit in furno anemi, ex carbonibus foſſilibus ligneisque
              <lb/>
            exſtructo, ita ut canduerit 5 horarum ſpatio: </s>
            <s xml:id="echoid-s1702" xml:space="preserve">refrigeratus, & </s>
            <s xml:id="echoid-s1703" xml:space="preserve">ferri
              <lb/>
            limaturæ impoſitus, nequidem leviſſimam ejus particulam attraxit,
              <lb/>
            neque geſtavit, viribus, ut prima fronte apparebat, omnino de-
              <lb/>
            ſtructis, quod impoſuiſſe videtur Clariſſimis Viris de Lanis & </s>
            <s xml:id="echoid-s1704" xml:space="preserve">Boy-
              <lb/>
            leo, affirmantibus Ignem ex Magnete omnem expellere virtutem
              <lb/>
            attrahentem; </s>
            <s xml:id="echoid-s1705" xml:space="preserve">quod alio tentamine Lemmerius in L’Hiſt. </s>
            <s xml:id="echoid-s1706" xml:space="preserve">de L’A-
              <lb/>
            cad. </s>
            <s xml:id="echoid-s1707" xml:space="preserve">Royal A°. </s>
            <s xml:id="echoid-s1708" xml:space="preserve">1706. </s>
            <s xml:id="echoid-s1709" xml:space="preserve">comprobare etiam adniſus fuit, obſervando
              <lb/>
            Magnetem radiis ſolaribus in foco ſpeculi uſtorii poſitum, quamvis
              <lb/>
            non tam diu ut in vitrum abiret, omnem vim attrahendi amiſiſſe:
              <lb/>
            </s>
            <s xml:id="echoid-s1710" xml:space="preserve">attamen Magnes a nobis examinatus ad intervallum dimidii digiti a
              <lb/>
            Verſorio, 6 pollices longo, mobiliſſimoque, manifeſta </s>
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