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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              <pb o="85" file="0099" n="99" rhead="DE MAGNETE."/>
            nunc in principio non attrahatur tam ſubito, quam pulvis nulli
              <lb/>
            igni immiſſus.</s>
            <s xml:id="echoid-s2046" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div44" type="section" level="1" n="44">
          <head xml:id="echoid-head52" xml:space="preserve">PROCESSUS SEXTUS.</head>
          <p>
            <s xml:id="echoid-s2047" xml:space="preserve">Examinaveram ita quidem Magnetem cum Sale neutro, quale eſt
              <lb/>
            Ammoniacum, & </s>
            <s xml:id="echoid-s2048" xml:space="preserve">cum Sale muriatico, uti eſt marinum; </s>
            <s xml:id="echoid-s2049" xml:space="preserve">nunc ex-
              <lb/>
            ponendus quoque erat actioni Salis Alcalini fixi; </s>
            <s xml:id="echoid-s2050" xml:space="preserve">quamobrem ſumſi
              <lb/>
            Magnetis in pulverem contuſi, & </s>
            <s xml:id="echoid-s2051" xml:space="preserve">Salis Tartari ana ℨiij. </s>
            <s xml:id="echoid-s2052" xml:space="preserve">amboſque
              <lb/>
            pulveres diu & </s>
            <s xml:id="echoid-s2053" xml:space="preserve">bene tritos miſtoſque immiſi crucibulo, quod apertum
              <lb/>
            ſuperne impoſitum eſtIgni carbonumLigneorum in furno anemi, trium
              <lb/>
            horarum ſpatio: </s>
            <s xml:id="echoid-s2054" xml:space="preserve">omnibus refrigeratis pulverem recepi ejuſdem co-
              <lb/>
            loris ac ante quam igni commiſſus erat, qui nullo modo immutatus
              <lb/>
            apparebat, movebatque Verſorium 6 pollicum in eadem ac ante
              <lb/>
            diſtantia, & </s>
            <s xml:id="echoid-s2055" xml:space="preserve">ab alio Magnete attrahebatur manifeſto.</s>
            <s xml:id="echoid-s2056" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2057" xml:space="preserve">2. </s>
            <s xml:id="echoid-s2058" xml:space="preserve">Cum ſolet Sal Tartari eſſe impatiens ſiccitatis, & </s>
            <s xml:id="echoid-s2059" xml:space="preserve">fortiſſimus
              <lb/>
            Magnes humidi aërei exiſtit, experiebar an nunc quoque per deli-
              <lb/>
            quium flueret, eoque modo magis forſitan aperiret Magnetem; </s>
            <s xml:id="echoid-s2060" xml:space="preserve">ſed
              <lb/>
            contra ſuam indolem ſiccus manſit; </s>
            <s xml:id="echoid-s2061" xml:space="preserve">quod videtur pendere a vima-
              <lb/>
            gna, quâ Magnetem attrahendo occupabatur.</s>
            <s xml:id="echoid-s2062" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2063" xml:space="preserve">3. </s>
            <s xml:id="echoid-s2064" xml:space="preserve">Quamobrem pulveri phialæ immiſſo ſuperaſſuſa fuit aqua ad
              <lb/>
            exceſſum unius digiti, ut viderem, an Tinctura exinde poſt longam
              <lb/>
            digeſtionem eliceretur, continuavi operationem per 16 dies; </s>
            <s xml:id="echoid-s2065" xml:space="preserve">ma-
              <lb/>
            nente nihilominus aqua pellucida, albaque, in qua nil niſi Sal Al-
              <lb/>
            calinum, quod pulveri adhæſerat, ſolvebatur: </s>
            <s xml:id="echoid-s2066" xml:space="preserve">hoc obſervato edul-
              <lb/>
            coravi pulverem larga ablutione cum aqua pura, eumque tandem
              <lb/>
            exſiccavi; </s>
            <s xml:id="echoid-s2067" xml:space="preserve">hic vires attrahendi ferrum manifeſtas habuit, vix iis
              <lb/>
            cedentes, quas in pulvere ante ullam inſtitutam operationem ani-
              <lb/>
            madverteram: </s>
            <s xml:id="echoid-s2068" xml:space="preserve">Hic pulvis tamen non erat purus Magneticus, quia
              <lb/>
            cineres a Sale Tartari relictos ſibique permixtos poſſidebat, a qui-
              <lb/>
            bus cum ſeparabatur ope alterius Magnetis, qui quidem in pulve-
              <lb/>
            rem Magneticum, non in cineres agit, recipiebam pulverem Ma-
              <lb/>
            gneticum, nullo modo mutatum: </s>
            <s xml:id="echoid-s2069" xml:space="preserve">non continuavi ulterius hanc
              <lb/>
            operationem, quia nihil ex ea didiceram, niſi Sal Alcalinum acer-
              <lb/>
            rimum nihil agere in Magnetem, nec ulterius quid ſperabam, ideo
              <lb/>
            potius ad examen cum alio Sale me contuli.</s>
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