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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            <s xml:id="echoid-s3150" xml:space="preserve">
              <pb o="129" file="0143" n="143" rhead="DE MAGNETE."/>
            omnis Sal ſublimabatur, adhærens lateribus & </s>
            <s xml:id="echoid-s3151" xml:space="preserve">fornici lagenæ, cum
              <lb/>
            partibus Arenæ aurantii coloris miſtus, relictâ materia in fundo,
              <lb/>
            ex fulvo atra, quæ expoſita Magneti aliquantum, ſed parum attra-
              <lb/>
            hebatur: </s>
            <s xml:id="echoid-s3152" xml:space="preserve">Maſſa in aqua ſoluta, dedit ſpiſſam Tincturam coloris
              <lb/>
            ferruginei, relicto craſſiori pulvere in fundo; </s>
            <s xml:id="echoid-s3153" xml:space="preserve">ſolutio cum notabili
              <lb/>
            efferveſcentia conjungebatur: </s>
            <s xml:id="echoid-s3154" xml:space="preserve">Tinctura exſiccata non a Magnete
              <lb/>
            attracta fuit; </s>
            <s xml:id="echoid-s3155" xml:space="preserve">pulvis, qui ſubſederat, erat craſſus, conſtans ex fra-
              <lb/>
            gmentis pluribus, duris, concretis, coloris elegantis rubicundi,
              <lb/>
            quæ exſiccata a Magnete vehementer attrahebantur: </s>
            <s xml:id="echoid-s3156" xml:space="preserve">hæc volatilia
              <lb/>
            nondum erant a Sale facta, & </s>
            <s xml:id="echoid-s3157" xml:space="preserve">ideo vim attrahentem, retinuerant;
              <lb/>
            </s>
            <s xml:id="echoid-s3158" xml:space="preserve">quamobrem Sal Ammoniacus non illico eam abigit in auras, etiamſi
              <lb/>
            majori molimine expungatur.</s>
            <s xml:id="echoid-s3159" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s3160" xml:space="preserve">Conſtat quoque ex præcedentibus operationibus, hanc Arenam non
              <lb/>
            abire in Regulum, unde concludendum eſt, eam nihil, aut ſaltem parum
              <lb/>
            Metalli in ſe habere; </s>
            <s xml:id="echoid-s3161" xml:space="preserve">niſi aliquod Sulphur ipſi adeo firmiter adhæ-
              <lb/>
            reat, ut a vi ignis & </s>
            <s xml:id="echoid-s3162" xml:space="preserve">Salium abſorberi nequeat, quodque impediit
              <lb/>
            quominus ad fluxionem reduci, & </s>
            <s xml:id="echoid-s3163" xml:space="preserve">in Regulum abire potuerit: </s>
            <s xml:id="echoid-s3164" xml:space="preserve">Sed
              <lb/>
            an poſtulatur metallum, ut Magnes in corpus aliquod operetur? </s>
            <s xml:id="echoid-s3165" xml:space="preserve">Nul-
              <lb/>
            la profecto eſt neceſſitas, & </s>
            <s xml:id="echoid-s3166" xml:space="preserve">alia dari quoque corpora, in quibus
              <lb/>
            non demonſtratum eſt Ferrum eſſe, monui ſupra, quæ tamen actio-
              <lb/>
            nem Magnetis in ſe experiuntur. </s>
            <s xml:id="echoid-s3167" xml:space="preserve">Non penitus probabilitate caret,
              <lb/>
            in hac Arena nihil Ferri aut metalli contineri, quia non efferveſcit
              <lb/>
            cum Spiritu Salis Marini; </s>
            <s xml:id="echoid-s3168" xml:space="preserve">nec cum Spiritu Nitri fortiſſimo, eove cum
              <lb/>
            Aqua diluto; </s>
            <s xml:id="echoid-s3169" xml:space="preserve">nec cum Aqua forti ſimplici, nec cum Aqua forti
              <lb/>
            duplici; </s>
            <s xml:id="echoid-s3170" xml:space="preserve">nec cum Aqua Regia; </s>
            <s xml:id="echoid-s3171" xml:space="preserve">nec cum Oleo Vitrioli forti, eove
              <lb/>
            diluto cum Aqua; </s>
            <s xml:id="echoid-s3172" xml:space="preserve">imo ſive hæc Arena calcinata fuerit vel non;
              <lb/>
            </s>
            <s xml:id="echoid-s3173" xml:space="preserve">frigida vel calida, nunquam cum memoratis Spiritibus acidiſſimis
              <lb/>
            efferveſcit, quibuscum tamen omne Ferrum acriter efferveſcit; </s>
            <s xml:id="echoid-s3174" xml:space="preserve">
              <lb/>
            an igitur ulla ſuſpicio Ferri latentis in hac Arena poteſt foveri?</s>
            <s xml:id="echoid-s3175" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s3176" xml:space="preserve">8. </s>
            <s xml:id="echoid-s3177" xml:space="preserve">Miſtæ fuerunt hujus Arenæ ℨiij. </s>
            <s xml:id="echoid-s3178" xml:space="preserve">cum Minii Drachmis novem,
              <lb/>
            quæ in Crucibulo igni vehementi in furno Anemi, trium horarum
              <lb/>
            ſpatio, commiſſæ, abiverunt in maſſam firmam, duriſſimam, valde
              <lb/>
            ſpongioſam, coloris ferrei, ſuperficiei inæqualis, in qua plurimæ
              <lb/>
            partes plumbi, in globulos coaliti, ſirmiter alteri materiei adhærebant:
              <lb/>
            </s>
            <s xml:id="echoid-s3179" xml:space="preserve">Ne minimum ſignum vitri ullius conſpiciebatur, ad quod con-
              <lb/>
            ficiendum, Experimentum inſtitueram; </s>
            <s xml:id="echoid-s3180" xml:space="preserve">potius Minium in </s>
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