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 handwritten notes

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        <div xml:id="echoid-div152" type="section" level="1" n="152">
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              <pb o="248" file="0262" n="262" rhead="DISSERTATIO"/>
            li filorum cognomines ſibi impoſiti fuerunt ad longitudinem dimi-
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            dii pollicis, atque aliquot ictibus mallei percuſſi ſupra lapideam in-
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            cudem, quibus ſupra ſe invicem applanabantur; </s>
            <s xml:id="echoid-s5884" xml:space="preserve">tum extremitas ap-
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            planata unius fili obverſa Verſorii cuſpidi Boreæ, quam ante re-
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            pulerat, nunc attraxit, alterius fili eadem extremitas polum
              <lb/>
            Boreum Verſorii repellebat, ut ante.</s>
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        <div xml:id="echoid-div153" type="section" level="1" n="153">
          <head xml:id="echoid-head162" xml:space="preserve">EXPERIMENTUM CXXVII.</head>
          <p>
            <s xml:id="echoid-s5886" xml:space="preserve">Quoniam judicaremus ex prioribus Experimentis, mutatum par-
              <lb/>
            tium, ferream componentium maſſam, ſitum directioni Magneti-
              <lb/>
            cæ differentiam afferre, antequam eam ſtabilirem ſententiam,
              <lb/>
            alia tentamina capienda adhuc eſſe ratus ſum, in quibus partium
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            ſitus mutatur, ſed modo â prioribus paulum diverſo; </s>
            <s xml:id="echoid-s5887" xml:space="preserve">filum ferreum
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            4 longum pollices, ejuſdemque cum præcedentibus craſſitiei, ſu-
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            per polo Magnetis ductum, altero extremo Verſorii cuſpidem Bo-
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            ream attraxit, altero Auſtralem, neque ulla Punctorum Conſequen-
              <lb/>
            tium in intermedia aliquâ parte ſigna edidit; </s>
            <s xml:id="echoid-s5888" xml:space="preserve">fuit filumper foramen
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            anguſtius, laminæ inflictum Chalybeæ, trajectum, quo longitudi-
              <lb/>
            nem 5 {1/2} pollicum nactum fuit, manentibus ad utramque extremitatem
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            iiſdem polis, vireſque inſignes oſtendentibus, iterum nulla Puncta
              <lb/>
            Conſequentia in tota longitudine conſpecta fuerunt: </s>
            <s xml:id="echoid-s5889" xml:space="preserve">Eodem filo
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            per anguſtius foramen deinde trajecto, quo 7 pollices longum eva-
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            ſit, eadem directio, quæ ante, permanſit, attrahente nempe una
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            extremitate Verſorii polum Boreum, repellente Auſtralem, & </s>
            <s xml:id="echoid-s5890" xml:space="preserve">al-
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            tera extremitate trahente polum Auſtralem, repellente Boreum;
              <lb/>
            </s>
            <s xml:id="echoid-s5891" xml:space="preserve">neque repetita ulterior fili attenuatio per anguſtius foramen novam
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            directionem induxit, aut priſtinam immutavit: </s>
            <s xml:id="echoid-s5892" xml:space="preserve">mutatus tamen fuit
              <lb/>
            in his tentaminibus partium fili ſitus, ita ut forſitan nullæ, quæ
              <lb/>
            ſe antea contigerant, ſibi adhæſerint aut in vicinia manſerint; </s>
            <s xml:id="echoid-s5893" xml:space="preserve">ſedad
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            inſigne intervallum â ſe mutuo fuerint remotæ.</s>
            <s xml:id="echoid-s5894" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5895" xml:space="preserve">Situs igitur partium mutatus non poteſt directionis inverſæ cauſa
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            univerſalis dici, dantur quippe caſus, in quibus aliter dirigitur Fer-
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            rum mutatâ ejus formâ, dantur alii, in quibus nulla diſcrepantia
              <lb/>
            directionis obſervatur. </s>
            <s xml:id="echoid-s5896" xml:space="preserve">Ecquis tam felix erit, qui eruta Magneti-
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            cæ virtutis cauſa, hæc phænomena clare intelliget, ſunt ea, </s>
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