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-div8" type="section" level="1" n="8">
          <head xml:id="echoid-head13" xml:space="preserve">DISSERTATIO
            <lb/>
          PHYSICA
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          EXPERIMENTALIS
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          DE
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          MAGNETE.
            <lb/>
          PRÆFATIO.</head>
          <p>
            <s xml:id="echoid-s88" xml:space="preserve">Quotquot in rerum Natura effectus a corporibus
              <lb/>
            editos conſpicimus, illi omnes motum, ut ſuam
              <lb/>
            cauſam agnoſcunt; </s>
            <s xml:id="echoid-s89" xml:space="preserve">quod quidem adeo perſpicu-
              <lb/>
            um eſt attendenti, ut de eo nemo ſanæ mentis
              <lb/>
            dubium movere poſſit: </s>
            <s xml:id="echoid-s90" xml:space="preserve">ſi ulterius indagationes nos-
              <lb/>
            tras promoveamus, atque inquiramus quænam
              <lb/>
            ſit cauſa eorum motuum, qui iſtos in ſenſus in-
              <lb/>
            currentes effectus excitant, tum nequaquam tan-
              <lb/>
            ta lux in vera cauſa aſſignanda ingenio humano affulget; </s>
            <s xml:id="echoid-s91" xml:space="preserve">imo e con-
              <lb/>
            trario, denſiſſimis ſæpe involuta cauſa tenebris illi videtur, qui re-
              <lb/>
            rum naturam ſumma cum diligentia & </s>
            <s xml:id="echoid-s92" xml:space="preserve">attentione perſcrutatur, o-
              <lb/>
            mniaque ſollicita evolvit cura: </s>
            <s xml:id="echoid-s93" xml:space="preserve">Videmus corpus motu concitatum & </s>
            <s xml:id="echoid-s94" xml:space="preserve">
              <lb/>
            occurrens alteri quieto mobilique, hoc movere, quod ita cauſa mo-
              <lb/>
            tus illius exiſtit: </s>
            <s xml:id="echoid-s95" xml:space="preserve">de hac cauſa motus non disputant inter ſe, ob ni-
              <lb/>
            miam ſenſuum evidentiam, Philoſophi; </s>
            <s xml:id="echoid-s96" xml:space="preserve">verum an omnis cauſa mo-
              <lb/>
            tus ſit corpus in motu conſtitutum, alterique occurrens, illudque at-
              <lb/>
            tingens & </s>
            <s xml:id="echoid-s97" xml:space="preserve">percutiens, controvertitur valde, quam multis id affir-
              <lb/>
            mantibus, pluribus autem in contrarias, & </s>
            <s xml:id="echoid-s98" xml:space="preserve">merito me judice, </s>
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