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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            etiam non aliquid in Magnete operaretur, & </s>
            <s xml:id="echoid-s2170" xml:space="preserve">volatile ex eo faceret
              <lb/>
            id omne, quod poſſet, relinquendo inertem terreſtremque maſſam:
              <lb/>
            </s>
            <s xml:id="echoid-s2171" xml:space="preserve">Igitur ſumſi Magnetis & </s>
            <s xml:id="echoid-s2172" xml:space="preserve">Antimonii in pulverem contuſi ana ℨiij,
              <lb/>
            quæ ambo accurate miſta inditaque crucibulo, aperto impoſita ſunt
              <lb/>
            Igni carbonum foſſilium in furno Anemitrium horarum ſpatio: </s>
            <s xml:id="echoid-s2173" xml:space="preserve">maſſæ
              <lb/>
            refrigerio commiſſæ deprehendebatur plurimum imminutum pondus
              <lb/>
            & </s>
            <s xml:id="echoid-s2174" xml:space="preserve">copia, ſed erat compacta, valde friabilis, nigreſcens, quæ Ver-
              <lb/>
            ſorium movebat, & </s>
            <s xml:id="echoid-s2175" xml:space="preserve">trita in pulverem a Magnete haud aliter attra-
              <lb/>
            hebatur, quam ſi nullum Ignem experta fuiſſet.</s>
            <s xml:id="echoid-s2176" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2177" xml:space="preserve">2. </s>
            <s xml:id="echoid-s2178" xml:space="preserve">Manſerat in hac maſſa aliquid Antimonii, quod ulteriori ope-
              <lb/>
            ratione expellere volui, quem in finem ſumſi maſſæ prioris ℨiiij,
              <lb/>
            Sulphuris vulgaris ℨj. </s>
            <s xml:id="echoid-s2179" xml:space="preserve">Borracis Veneti ℨij. </s>
            <s xml:id="echoid-s2180" xml:space="preserve">(per infortunium hunc
              <lb/>
            Salem loco Nitri addideram) omniaque bene contuſa & </s>
            <s xml:id="echoid-s2181" xml:space="preserve">miſta in
              <lb/>
            crucibulo commiſi Igni ſummo reverberii, bihorii ſpatio: </s>
            <s xml:id="echoid-s2182" xml:space="preserve">liquefa-
              <lb/>
            cta hoc tempore aliquantum fuit maſſa, quæ fuit unita, ferreæ
              <lb/>
            duritiëi, ſpongioſaque: </s>
            <s xml:id="echoid-s2183" xml:space="preserve">hæc oppoſita Verſorio 6 pollicum, illud
              <lb/>
            nunc attrahebat nunc repellebat, quamobrem in hac operatione vis
              <lb/>
            ex Magnete non expellebatur.</s>
            <s xml:id="echoid-s2184" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2185" xml:space="preserve">3. </s>
            <s xml:id="echoid-s2186" xml:space="preserve">Huic maſſæ iterum redactæ in pulverem addidi Nitri ℨij,
              <lb/>
            cum quo igni vehementiſſimo per bihorium rurſus commiſi; </s>
            <s xml:id="echoid-s2187" xml:space="preserve">ex eo
              <lb/>
            rediit maſſa nigra, dura, fragilis, cohærens, ſed valde ſpongioſa
              <lb/>
            & </s>
            <s xml:id="echoid-s2188" xml:space="preserve">poroſa, ac heterogenea: </s>
            <s xml:id="echoid-s2189" xml:space="preserve">quæ oblata Verſorio, id nihilominus
              <lb/>
            manifeſto attraxit, & </s>
            <s xml:id="echoid-s2190" xml:space="preserve">reducta in pulverem, tamen tota a Magnete
              <lb/>
            fortiter attrahebatur, etiamſi paulum forte minus quam ante ope-
              <lb/>
            rationem ullam: </s>
            <s xml:id="echoid-s2191" xml:space="preserve">Quare Antimonium non ſecum abripit ex Magnete
              <lb/>
            partem, in qua vis attractrix reſidet, licet ejus aliquam exiguam
              <lb/>
            portionem volatilem reddat.</s>
            <s xml:id="echoid-s2192" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div49" type="section" level="1" n="49">
          <head xml:id="echoid-head57" xml:space="preserve">PROCESSUS UNDECIMUS.</head>
          <p>
            <s xml:id="echoid-s2193" xml:space="preserve">Tandem Magnetem etiam vexandum arbitrabar Salibus Acidis,
              <lb/>
            quibus hactenus non uſus fueram, quapropter Magnetis in pulve-
              <lb/>
            rem contriti ℨiij. </s>
            <s xml:id="echoid-s2194" xml:space="preserve">immiſi phialæ vitreæ alti colli, ſuperaffudi Spiri-
              <lb/>
            tum Salis marini ad exceſſum duorum digitorum; </s>
            <s xml:id="echoid-s2195" xml:space="preserve">magna oborta fuit
              <lb/>
            efferveſcentia, ex qua fumi aſſurgebant fætentes, magnæ in phiala
              <lb/>
            excitabantur bullæ, haud aliter ac ſi limaturæ ferri hic Spiritus </s>
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