Casati, Paolo, De igne dissertationes physicae, 1686

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            <s xml:id="echoid-s10262" xml:space="preserve">
              <pb o="336" file="0348" n="348" rhead="Diſſertatio Vndecima"/>
            noxiè, & </s>
            <s xml:id="echoid-s10263" xml:space="preserve">quidem non rarò, tractârunt: </s>
            <s xml:id="echoid-s10264" xml:space="preserve">neque enim tam cito
              <lb/>
            incaleſcit ferrum leuiſſimo illo tritu. </s>
            <s xml:id="echoid-s10265" xml:space="preserve">Quin etiam dubitari poteſt,
              <lb/>
            an, vbi primùm calorem vtcunque ſenſerit auri calx, illico ful-
              <lb/>
            minet; </s>
            <s xml:id="echoid-s10266" xml:space="preserve">ſiquidem certum eſt poſt admotam candelam aliquantu-
              <lb/>
            lum temporis expectandum eſſe, antequam tonet; </s>
            <s xml:id="echoid-s10267" xml:space="preserve">ideoque in-
              <lb/>
            certum eſt, vtrùm id primis igniculis tribuendum ſit, an potiùs cer-
              <lb/>
            ta eorum copia requiratur: </s>
            <s xml:id="echoid-s10268" xml:space="preserve">id quod multo probabilius exiſtimo
              <lb/>
            Verùm de hoc certius aliquid ſtatui fortaſſe poterit, vbi innotuerit
              <lb/>
            cauſa fulmineæ illius facultatis.</s>
            <s xml:id="echoid-s10269" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s10270" xml:space="preserve">Maur. </s>
            <s xml:id="echoid-s10271" xml:space="preserve">Si res ſit exactè diſcutienda, non ita paucis expediri po-
              <lb/>
            terit, & </s>
            <s xml:id="echoid-s10272" xml:space="preserve">præſens diſſertatio in noctem vſque progredietur: </s>
            <s xml:id="echoid-s10273" xml:space="preserve">Opor-
              <lb/>
            teret enim auri naturam, facultates ſalium, quibus aqua Regia
              <lb/>
            conſtat, ipſumque Tartari ſalem expendere, vt demum probabi-
              <lb/>
            li aliquâ coniecturâ aſſequeremur cauſam, cui tribuendus ſit effe-
              <lb/>
            ctus adeò mirabilis. </s>
            <s xml:id="echoid-s10274" xml:space="preserve">Sed ſi vobis ſatis fuerit quæſtionem hanc leui
              <lb/>
            manu tractari, paucis exponam, quæ mihi probabilia videntur.
              <lb/>
            </s>
            <s xml:id="echoid-s10275" xml:space="preserve">Quoniam Salem Ammoniacum requirit Aqua Regia aurum diſſol-
              <lb/>
            uens, qui ſal in aquâ forti communi non reperitur, huic ſali vim
              <lb/>
            tonandi & </s>
            <s xml:id="echoid-s10276" xml:space="preserve">fulminandi tribuendam cenſent non pauci. </s>
            <s xml:id="echoid-s10277" xml:space="preserve">Verùm non
              <lb/>
            vni tantùm auro præcipitato, ſed etiam ferro in calcem ope Salis
              <lb/>
            Tartari redacto vis eadem tonandi conuenit, nec tamen Sali Am-
              <lb/>
            moniaco, qui aquam ſtygiam ferrum ſoluentem non ingreditur,
              <lb/>
            adſcribi poteſt. </s>
            <s xml:id="echoid-s10278" xml:space="preserve">Ideò ſunt, qui opinentur in cauſa eſſe ſulphur,
              <lb/>
            quo ferrum abundare nemo negat, & </s>
            <s xml:id="echoid-s10279" xml:space="preserve">in auro pariter puriſſimum
              <lb/>
            ſulphur agnoſcunt, atque id ex odore ſulphureo, qui in horum
              <lb/>
            metallorum tonitru percipitur, conſirmatum volunt. </s>
            <s xml:id="echoid-s10280" xml:space="preserve">Sed & </s>
            <s xml:id="echoid-s10281" xml:space="preserve">his
              <lb/>
            acquieſcere non poſſum, quia licèt ferri natura tum aquâ forti, tum
              <lb/>
            calore diſſoluatur, eiuſque ſulphur accendi poſſe concedatur, auri
              <lb/>
            tamen natura, quamuis in calcem redacti, non diſſoluitur, neque
              <lb/>
            virtute aquæ Regiæ, nam aurum præcipitatum demum purgatur
              <lb/>
            à ſalibus, & </s>
            <s xml:id="echoid-s10282" xml:space="preserve">ſuam formam recipit; </s>
            <s xml:id="echoid-s10283" xml:space="preserve">neque vi caloris, nam factâ
              <lb/>
            exploſione ad partes inferiores, poſtquam detonuit, in ſubiecto
              <lb/>
            vaſe, quod cadentes particulas recipit, Sales cinereus color in-
              <lb/>
            dicat, auri particulas purpureus puluiſculus, qui & </s>
            <s xml:id="echoid-s10284" xml:space="preserve">colligi poteſt. </s>
            <s xml:id="echoid-s10285" xml:space="preserve">
              <lb/>
            Quare ad Tartari ſalem confugiendum videtur, ſiquidem aurum
              <lb/>
            in aquâ Regiâ ſolutum ſi Mercurio, aut alia ratione præcipitetur,
              <lb/>
            preterquam per Oleum Tartari, caret facultate fulmineâ: </s>
            <s xml:id="echoid-s10286" xml:space="preserve">hęc autem
              <lb/>
            quamuis à Tartaro communicata illi adimitur, ſi Spiritu Salis </s>
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