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="94" file="0108" n="108" rhead="DISSERTATIO"/>
            detegens, opimos ſemper dedit fructus tam fortunæ quam famæ,
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            atque admirandis productis omne tædium, ab improbo ortum labore,
              <lb/>
            ex animo delevit.</s>
            <s xml:id="echoid-s2275" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2276" xml:space="preserve">Sufficiat ex his omnibus operationibus didiciſſe, Magnetem quo-
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            modocunque tractatum manere Magnetem, neque vi Ignis, vel
              <lb/>
            Menſtruorum ſolventium, vel Salium ita deſtrui, ut vim penitus amit-
              <lb/>
            tat nunquam recuperandam, cum in omnibus deſcriptis proceſſibus
              <lb/>
            ſemper eamdem retinuerit: </s>
            <s xml:id="echoid-s2277" xml:space="preserve">Sed a Sale compedibus quaſi vincieba-
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            tur. </s>
            <s xml:id="echoid-s2278" xml:space="preserve">Alias inſtitui præterea operationes cum Magnete, ſed quæ pa-
              <lb/>
            rum mihi ſatis faciebant; </s>
            <s xml:id="echoid-s2279" xml:space="preserve">ita eam ſolvi in oleo vitrioli poſt digeſtio-
              <lb/>
            nem 16 dierum, quod oleum abiit in lapillum durum, qui in aqua
              <lb/>
            ſolutus, præcipitem dabat pulverem gryſei coloris, ſalſum, ſed a
              <lb/>
            Magnete fortiter attractum, qui in Igne rotæ per bihorium poſitus
              <lb/>
            in pulverem rubrum abiit, æque ac antea vi gaudentem Magne-
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            tica.</s>
            <s xml:id="echoid-s2280" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2281" xml:space="preserve">Nob. </s>
            <s xml:id="echoid-s2282" xml:space="preserve">Boyleus Magnetem diſſolvit in aquâ regiâ, obtinuitque ſo-
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            lutionem, qualis ab Auro puro fiëri ſolet: </s>
            <s xml:id="echoid-s2283" xml:space="preserve">poſſet hoc corpus di-
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            verſiſſimis adhuc tractari aliis modis, & </s>
            <s xml:id="echoid-s2284" xml:space="preserve">procul dubio varia daret
              <lb/>
            pulcra producta, quæ ſua utilitate ſe commendarent, ſed hæc tem-
              <lb/>
            pori committenda, nobis ſufficit aliqua tentaſſe, & </s>
            <s xml:id="echoid-s2285" xml:space="preserve">aliquem pro-
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            greſſum, etiamſi exiguum, in hac materia feciſſe.</s>
            <s xml:id="echoid-s2286" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2287" xml:space="preserve">Sed redeamus in viam, ad alios properemus effectus, quos Ma-
              <lb/>
            gnes in Ferrum edit, quorum licet cauſam ignoremus, nihilominus
              <lb/>
            plurimum ad clariorem Lapidis cognitionem conferent, nonnullos
              <lb/>
            ex comparatis cum aliis exponere licebit, alios tantummodo me-
              <lb/>
            morare, quorum non prius, quam virium Magneticarum eruta erit
              <lb/>
            cauſa, explicari & </s>
            <s xml:id="echoid-s2288" xml:space="preserve">intelligi poterunt: </s>
            <s xml:id="echoid-s2289" xml:space="preserve">hæſitavi aliquamdiu, an ſe-
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            quentia adnecterem prioribus Experimenta, quia maxima parte
              <lb/>
            aliorum ſunt, nec magnam redolent ſubtilitatem, & </s>
            <s xml:id="echoid-s2290" xml:space="preserve">modo inſtar
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            collectionis indigeſtæ haberi poſſunt: </s>
            <s xml:id="echoid-s2291" xml:space="preserve">Verum quia ex proprietatibus
              <lb/>
            rerum, earum indoles eruitur, etiam ex Experimentis Magneticis
              <lb/>
            cauſa virtutis attractricis indaganda erit, nunquam idcirco multa
              <lb/>
            reſpuenda erunt data, in quibus omnis ſpes ſolvendi problema con-
              <lb/>
            cipienda eſt; </s>
            <s xml:id="echoid-s2292" xml:space="preserve">quod quo abſtruſius fuerit, eo plura poſtulat cogni-
              <lb/>
            ta, ut ſolvatur & </s>
            <s xml:id="echoid-s2293" xml:space="preserve">intelligatur, Sylvam idcirco Experimentorum
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            conſivimus, quæ etiamſi nunc parvi, poſtea majoris uſus </s>
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