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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        <div xml:id="echoid-div156" type="section" level="1" n="156">
          <pb o="253" file="0267" n="267" rhead="DE MAGNETE"/>
        </div>
        <div xml:id="echoid-div157" type="section" level="1" n="157">
          <head xml:id="echoid-head166" xml:space="preserve">CAPUT QUINTUM.</head>
          <head xml:id="echoid-head167" style="it" xml:space="preserve">De vi Magnetica Ferri.</head>
          <p>
            <s xml:id="echoid-s5988" xml:space="preserve">Admodum univerſalis eſt virtus Maguetica, in corpore quo-
              <lb/>
            cunque ex Ferro confecto latens; </s>
            <s xml:id="echoid-s5989" xml:space="preserve">five enim fuerit magnum
              <lb/>
            vel parvum, craſſum vel tenue ferramentum, manifeſto vim attra-
              <lb/>
            ctricem ſuam demonſtrat, quam exercet in Limaturam, Arenam
              <lb/>
            Virginienſem, aut in Acum Magneticam; </s>
            <s xml:id="echoid-s5990" xml:space="preserve">atque directrice virtute
              <lb/>
            ſæpegaudet, qua ad eaſdem cœliplagas, ſibi commiſium, convertitur,
              <lb/>
            quam Magnes aut Verſorium: </s>
            <s xml:id="echoid-s5991" xml:space="preserve">Hoc autem non admirandum eſt,
              <lb/>
            quia ſupra adnotavimus, Ferrum rubigine corroſum vetuſtate tem-
              <lb/>
            poris, atque Lapidis poris infuſum, in verum Magnetem abire & </s>
            <s xml:id="echoid-s5992" xml:space="preserve">
              <lb/>
            commutari; </s>
            <s xml:id="echoid-s5993" xml:space="preserve">neque magno indigemus molimine ad vim Magneticam
              <lb/>
            in corporibus ex Ferro fabrefactis inveniendam, omnis enim culter,
              <lb/>
            forceps, forfex, clavus, cuneus, acus, aut quodcunque aliud ad
              <lb/>
            manus inſtrumentum fuerit ferreum, Arenam Indicam aut ferream
              <lb/>
            ſcobem ad cuſpidem angulumve ſuum attrahendo affigit: </s>
            <s xml:id="echoid-s5994" xml:space="preserve">Cognita
              <lb/>
            hæc elapſo ſeculo fuerunt plurimis, præcipue tamen Viris ſtudio
              <lb/>
            & </s>
            <s xml:id="echoid-s5995" xml:space="preserve">doctrinâ præſtantiſſimis Gaſſendo, Rohaulto; </s>
            <s xml:id="echoid-s5996" xml:space="preserve">& </s>
            <s xml:id="echoid-s5997" xml:space="preserve">hac tempeſtate
              <lb/>
            ulterius confirmata â Wolfio, Reaumurioque in L’Hiſtoire de L’ A-
              <lb/>
            cad. </s>
            <s xml:id="echoid-s5998" xml:space="preserve">Roy. </s>
            <s xml:id="echoid-s5999" xml:space="preserve">A°. </s>
            <s xml:id="echoid-s6000" xml:space="preserve">1723. </s>
            <s xml:id="echoid-s6001" xml:space="preserve">De Magnete ejuſque viribus acturus, non
              <lb/>
            omittendas obſervationes de vi Ferri captas cenſui, cum ejuſdem
              <lb/>
            ſint naturæ ac priorcs, atque ex his lux quædam affulgeat il-
              <lb/>
            lis: </s>
            <s xml:id="echoid-s6002" xml:space="preserve">& </s>
            <s xml:id="echoid-s6003" xml:space="preserve">quemadmodum plurima, quæ de Magnete olim affirmaban-
              <lb/>
            tur, novo examini ſubmittens confirmavi, aut errorem detexi, ita
              <lb/>
            hic pergendum erat, exploranda erant aliorum inventa de novo,
              <lb/>
            hiulci ſupplendi, omiſſa & </s>
            <s xml:id="echoid-s6004" xml:space="preserve">præterviſa addenda, in ordinem redi-
              <lb/>
            genda, quæ ſparſim apud alios exſtabant; </s>
            <s xml:id="echoid-s6005" xml:space="preserve">hæc præmonenda duxi,
              <lb/>
            ne trita, aut aliorum inventa pro meis venditare videar.</s>
            <s xml:id="echoid-s6006" xml:space="preserve"/>
          </p>
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