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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            ri ac demonſtrari phænomena, quæ Magnetes & </s>
            <s xml:id="echoid-s161" xml:space="preserve">Ferrum quotidie con-
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            ſpicienda præbent? </s>
            <s xml:id="echoid-s162" xml:space="preserve">Quod ſi enim ſenſus conſulant, neque Viſu, neque
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            Tactu, neque reſiſtentia, neque pondere Fluidum obſervatur magneti-
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            cum; </s>
            <s xml:id="echoid-s163" xml:space="preserve">adeoque cum id advocatur ad effectus explicandos, non niſi ex
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            mera hypotheſi aſſumitur, nequaquam demonſtratur; </s>
            <s xml:id="echoid-s164" xml:space="preserve">quonam igitur
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            fundamento ſevero rerum indagatori ejusmodi dari Fluidum perſuaderi
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            poterit? </s>
            <s xml:id="echoid-s165" xml:space="preserve">Quod ſi deinde maximos in arte viros conſulamus, qui noſtra
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            ætate quamplurimum operæ in explicandis Geometrice effectibus mag-
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            neticis poſuerunt, fluido tamen ad id uſi, hos vehementer ſuum torſiſſe
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            animum inani opera & </s>
            <s xml:id="echoid-s166" xml:space="preserve">fruſtraneo labore, deprehendimus, atque adver-
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            ſus Hydroſtraticas leges inceſſiſſe, neque tamen adhuc ſibi ipſis ſa-
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            tisfeciſſe; </s>
            <s xml:id="echoid-s167" xml:space="preserve">teſtimonium Præſtantiſſimi Whiſtoni pro omnibus ſufficiat,
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            qui non dubitavit profiteri palam, ſe nullo modo Mechanice explica-
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            re poſſe phænomena magnetica, neque meditando invenire ſe po-
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            tuiſſe ejusmodi motum Fluidi ſubtilis, quod vim Attractricem in
              <lb/>
            proportione illa, quæ inter Magnetes a ſe ſejunctos obtinet, operaretur:
              <lb/>
            </s>
            <s xml:id="echoid-s168" xml:space="preserve">arbitror autem nec dari Fluidum magneticum, niſi in animo illud
              <lb/>
            fingentis, multo minus ex eo demonſtrari poſſe phænomena, quæ in-
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            ferius afferam: </s>
            <s xml:id="echoid-s169" xml:space="preserve">Agit Magnes in Magnetem, aut in Ferrum, vi attra-
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            ctrice, quæ quomodo comparata ſit in iis corporibus, non intelligi-
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            tur, uti nec ejus cauſa, unde hic ſi ullibi, recte convenit dictum
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            Ciceronis, facilius quid non ſit, quam quid ſit, de hujusmodi rebus
              <lb/>
            poſſe confirmari.</s>
            <s xml:id="echoid-s170" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s171" xml:space="preserve">Mirabitur procul dubio Lector, me aliquid conſcripſiſſe de eo
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            corpore, cujus nonnullos quidem effectus intelligo, ſed quorum
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            cauſam me ignorare confiteor, de quibus proinde non multum diſſe-
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            rere, & </s>
            <s xml:id="echoid-s172" xml:space="preserve">pauciora adhucdum demonſtrare potero, de quibus idcirco non
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            niſi valde ſterilis doctrina erit; </s>
            <s xml:id="echoid-s173" xml:space="preserve">& </s>
            <s xml:id="echoid-s174" xml:space="preserve">in qua tractanda vix Philoſophi functus
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            ero officio, cum nullam hypotheſin condidi, ex qua effectus explicem;
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            </s>
            <s xml:id="echoid-s175" xml:space="preserve">Hic intelligat volo, me eam profiteri Philoſophandi methodum, quæ
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            rejectis omnibus Hypotheſibus, nihil ponit in Phyſica firmum ratumque,
              <lb/>
            niſi quod abſolute demonſtratur: </s>
            <s xml:id="echoid-s176" xml:space="preserve">neque cum illis me conſentire, qui regu-
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            lam ſtabiliverunt. </s>
            <s xml:id="echoid-s177" xml:space="preserve">Præſtantius eſſe opinari de rebus difficillimis, quam
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            clara tantum velle ſcire & </s>
            <s xml:id="echoid-s178" xml:space="preserve">demonſtrare, aut ignor antiam fateri: </s>
            <s xml:id="echoid-s179" xml:space="preserve">Quid enim
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            differt Opinio aut Hypotheſis a fabula? </s>
            <s xml:id="echoid-s180" xml:space="preserve">utraque chimæra ludibundi
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            eſt ingenii; </s>
            <s xml:id="echoid-s181" xml:space="preserve">tamdiu placet vigetque, donec nova jocoſior exoritur;</s>
            <s xml:id="echoid-s182" xml:space="preserve"/>
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