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

Table of Notes

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          <pb o="144" file="0158" n="158" rhead="DISSERTATIO"/>
          <p>
            <s xml:id="echoid-s3568" xml:space="preserve">An non pendent hæc phænomena a ſpinis Ferri, pluribus vel
              <lb/>
            paucioribus, & </s>
            <s xml:id="echoid-s3569" xml:space="preserve">Ferrum quaſi interſecantibus in fragmenta varia,
              <lb/>
            ad quorum extremitates diverſi poli attrahentes ſunt, fortiores aut
              <lb/>
            imbecilliores, pro ſpinarum fabrica & </s>
            <s xml:id="echoid-s3570" xml:space="preserve">ſitu? </s>
            <s xml:id="echoid-s3571" xml:space="preserve">Hoc probabile eſt, con-
              <lb/>
            ſtat enim in omni Ferro & </s>
            <s xml:id="echoid-s3572" xml:space="preserve">Chalybe ſpinas dari, quæ ſunt quidem
              <lb/>
            Ferrum, ſed durius diverſumque à reliquo & </s>
            <s xml:id="echoid-s3573" xml:space="preserve">aliquando ita diſtin-
              <lb/>
            ctum, ac nodus ligni ab aſſere reliquo: </s>
            <s xml:id="echoid-s3574" xml:space="preserve">quia hæ ſpinæ nullo ſunt
              <lb/>
            poſitæ ordine, ideo etiam non ſervant Puncta Conſequentia diſtan-
              <lb/>
            tias a ſe æquales, aut proportionales.</s>
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        <div xml:id="echoid-div113" type="section" level="1" n="113">
          <head xml:id="echoid-head122" xml:space="preserve">EXPERIMENTUM XCI.</head>
          <p>
            <s xml:id="echoid-s3576" xml:space="preserve">Verſorii novi, 12 {1/2} pollices longi, medium impoſitum fuit
              <lb/>
            polo Magnetis Auſtrali, tum avulſum, directum fuit cuſpide ad
              <lb/>
            plagam Boream, caudâ ad Auſtralem: </s>
            <s xml:id="echoid-s3577" xml:space="preserve">2°. </s>
            <s xml:id="echoid-s3578" xml:space="preserve">hujus Verſorii, in medio
              <lb/>
            ſuper polo Magnetis Auſtrali poſiti, pars Borea ducta fuit a medio
              <lb/>
            cuſpidem Boream verſus, longitudine circiter 2 pollicum, tum pin-
              <lb/>
            næ impoſiti extremitas Borea vix dirigebatur, torpente Acu, ſpe-
              <lb/>
            ctabat tamen Boream, tumque alterius Verſorii cuſpide Boreali ſe-
              <lb/>
            cundum illius longitudinem promota, obſervabantur tantum duo po-
              <lb/>
            li, quorum unus & </s>
            <s xml:id="echoid-s3579" xml:space="preserve">valde torpens, erat Boreus, atque ad diſtan-
              <lb/>
            tiam 2 pollicum ab hinc, tota Verſorii longitudo attrahebatur a cu-
              <lb/>
            ſpide Borea alterius Verſorii; </s>
            <s xml:id="echoid-s3580" xml:space="preserve">cuſpis tamen Auſtralis non torpebat,
              <lb/>
            ſed vehementiſſime attrahebatur. </s>
            <s xml:id="echoid-s3581" xml:space="preserve">3°. </s>
            <s xml:id="echoid-s3582" xml:space="preserve">Medium ejuſdem Verſorii
              <lb/>
            iterum impoſitum fuit polo Auſtrali Magnetis, cujus pars Septen-
              <lb/>
            trionalis ſuper eo ducta fuit uſque ad locum ubi Punctum Conſe-
              <lb/>
            quens, modo ante obſervatum fuit, non tamen uſque ad extremita-
              <lb/>
            tem Verſorii; </s>
            <s xml:id="echoid-s3583" xml:space="preserve">erat hujus directio ut ante, multo tamen vividius
              <lb/>
            obſervabatur moveri, neque tum plures polos habuit, quam duos,
              <lb/>
            in qualibet extremitate unum, atque vis ſingulorum deſinebat in
              <lb/>
            medio Verſorii.</s>
            <s xml:id="echoid-s3584" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s3585" xml:space="preserve">4. </s>
            <s xml:id="echoid-s3586" xml:space="preserve">Omnia phænomena fuerunt eadem, poſito hujus Verſorii me-
              <lb/>
            dio ſuper polo Magnetis Auſtrali, & </s>
            <s xml:id="echoid-s3587" xml:space="preserve">ſuper eo ducta parte Septen-
              <lb/>
            trionali Verſorii uſque ad apicem.</s>
            <s xml:id="echoid-s3588" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s3589" xml:space="preserve">5. </s>
            <s xml:id="echoid-s3590" xml:space="preserve">Tum iterum Verſorii medium impoſitum fuit Magnetis polo
              <lb/>
            Auſtrali, atque illius pars Auſtralis producta aliquouſque a </s>
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