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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            plurima in diverſis corporibus feci ab aliquot retro annis pericula;
              <lb/>
            </s>
            <s xml:id="echoid-s36" xml:space="preserve">idque eo lubentius, quod muneris ratio hæc poſtulabat, tum
              <lb/>
            neſcio quo impetu ſponte in ejuſmodi ſtudium trahebar; </s>
            <s xml:id="echoid-s37" xml:space="preserve">ea
              <lb/>
            harum Diſſertationum eſt origo, in quibus nonnulla, forte
              <lb/>
            minus buc uſque divulgata habentur, verum ſimul quoque a-
              <lb/>
            lia, quæ ab aliis inventa, novo tantum examini ſubjecta
              <lb/>
            fuerunt; </s>
            <s xml:id="echoid-s38" xml:space="preserve">ut quid verum, quid erroneum ſit, conſtaret.</s>
            <s xml:id="echoid-s39" xml:space="preserve"/>
          </p>
          <p style="it">
            <s xml:id="echoid-s40" xml:space="preserve">Auctorum nomina quandoque appoſita fuerunt; </s>
            <s xml:id="echoid-s41" xml:space="preserve">non ut do-
              <lb/>
            ctrinam oſtentarem, vel autoritatibus pugnarem, quæ in
              <lb/>
            Philoſophia nullius ſunt pretii, ſed ut inventoribus merita
              <lb/>
            adſcriberetur gloria.</s>
            <s xml:id="echoid-s42" xml:space="preserve"/>
          </p>
          <p style="it">
            <s xml:id="echoid-s43" xml:space="preserve">In inſtituendis experimentis omnem adhibui diligentiam & </s>
            <s xml:id="echoid-s44" xml:space="preserve">
              <lb/>
            attentionem ad phænomena; </s>
            <s xml:id="echoid-s45" xml:space="preserve">nonnullis perſpicaciam effugien-
              <lb/>
            tibus repetitum fuit periculum, imo inter dum frequentius, ut, ſi
              <lb/>
            non liceret omnes, ſaltem plurimos & </s>
            <s xml:id="echoid-s46" xml:space="preserve">craſſiores errores evitarem:
              <lb/>
            </s>
            <s xml:id="echoid-s47" xml:space="preserve">verum nonnulla, uti ſunt ea, quæ Magnetem ſpectant, a
              <lb/>
            tam exiguis pendent circumſtantiis, ut vel centum oculatiſſi-
              <lb/>
            mos ſimul attendentes illudere poſſent, quæ animum non pa-
              <lb/>
            rum ſollicitum, ſed eo prudentiorem reddiderunt.</s>
            <s xml:id="echoid-s48" xml:space="preserve"/>
          </p>
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            <s xml:id="echoid-s49" xml:space="preserve">Inchoavi tantummodo Magnetis examen, quod ſilentio pre-
              <lb/>
            mere in animum induxeram, cum nihil de bujus admir andi
              <lb/>
            Lapidis indole hucuſque detegere potueram, prudentia igitur,
              <lb/>
            ut ſobrie inter dum ratiocinarer, interdum Experimentum dun-
              <lb/>
            taxat commemorarem, ſuadebat. </s>
            <s xml:id="echoid-s50" xml:space="preserve">Verum amicorum votis
              <lb/>
            reſiſtere non licuit: </s>
            <s xml:id="echoid-s51" xml:space="preserve">interim in perpolienda hac doctrina, no-
              <lb/>
            viſque continuo obſervationibus & </s>
            <s xml:id="echoid-s52" xml:space="preserve">periculis capiendis de hoc
              <lb/>
            lapide occupor quotidie, ut aliquando ſupplere poſſim, quæ
              <lb/>
            nunc deficiunt, abſtruſumque ejus genium penitius perſcru-
              <lb/>
            ter.</s>
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