Casati, Paolo, De igne dissertationes physicae, 1686

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            <s xml:id="echoid-s3191" xml:space="preserve">
              <pb o="104" file="0116" n="116" rhead="Diſſertatio Quarta."/>
            mam agnoſcens, hanc in candente ferro non deprehendat? </s>
            <s xml:id="echoid-s3192" xml:space="preserve">cui ſi
              <lb/>
            fortè lux inſit remiſſior, certè nec calor hebetior, nec vis vren-
              <lb/>
            di languidior. </s>
            <s xml:id="echoid-s3193" xml:space="preserve">At ferri naturam non perire, clarius eſt, quàm vt
              <lb/>
            à quoquam negari queat. </s>
            <s xml:id="echoid-s3194" xml:space="preserve">Aut igitur duæ formæ, quarum alte-
              <lb/>
            ra alteri ſubiecta non eſt, materiam eandem pariter imbuunt, id
              <lb/>
            quod Peripatetica Philoſophia auerſatur; </s>
            <s xml:id="echoid-s3195" xml:space="preserve">aut, ſi nouam formam
              <lb/>
            ſubſtantialem infert ignis, ferro candenti ignem ineſſe pertinaciter
              <lb/>
            inſiciandum eſt cum aliquibus, quos aliquando diſputantes audi-
              <lb/>
            ui, qui ſenſibus omnibus fruſtra reclamantibus malebant præpo-
              <lb/>
            ſterè philoſophari, ne Metaphyſicæ quædam, vt aiunt (à vero
              <lb/>
            potiùs abſtractæ) eorum ratiocinationes perirent. </s>
            <s xml:id="echoid-s3196" xml:space="preserve">Si igitur igne-
              <lb/>
            ſcere nil aliud fuerit, quàm eximium calorem cum virtute com-
              <lb/>
            burendi coniunctum concipere, poterit ferrum citrà ſuæ naturæ
              <lb/>
            mutationem, aut nouæ formę ſubſtantialis additamentum,
              <lb/>
            virtutem hanc acquirere, qua nihil diſtare videatur ab
              <lb/>
            igne.</s>
            <s xml:id="echoid-s3197" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s3198" xml:space="preserve">Dand. </s>
            <s xml:id="echoid-s3199" xml:space="preserve">Melioris notæ Philoſophis, ne duabus Formis Mate-
              <lb/>
            riam vnam ſubijciant, placet in hiantes ferri poros particulas igneas
              <lb/>
            inſeri (quemadmodum humidâ tempeſtate ligna aliqua ita vapo-
              <lb/>
            ribus imbuuntur, vt eorum moles aucta videatur) quarum nati-
              <lb/>
            uo lumine inuoluta ferri obſcuritas lateat, igniſque tantummo-
              <lb/>
            do lucida ſpecies exhibeatur. </s>
            <s xml:id="echoid-s3200" xml:space="preserve">Verùm vt vt lux ignea ferro accidit,
              <lb/>
            vis certè vrendi maior apparet, quàm quæ tenuiſſimis igniculis
              <lb/>
            per hiantes poros diſtributis tribui valeat; </s>
            <s xml:id="echoid-s3201" xml:space="preserve">quippe qui, licèt mul-
              <lb/>
            to plures, in ardente carbone vim eam languidiùs exercebant: </s>
            <s xml:id="echoid-s3202" xml:space="preserve">ex
              <lb/>
            quo non obſcurè intelligitur ipſis quoquè ferri particulis igneam
              <lb/>
            adurendi virtutem ineſſe. </s>
            <s xml:id="echoid-s3203" xml:space="preserve">Neque nodum hunc continuò expe-
              <lb/>
            diunt, qui ferri particulas aliquas in ignem contumaces diſtin-
              <lb/>
            guunt ab alijs faciliùs concipientibus ignem, à quo abſumantur
              <lb/>
            (vt ſatis dilucidè indicant ſtricturæ ex feruenti maſſâ erumpentes,
              <lb/>
            ſiuè dum in fornace excoquitur, ſiue dum malleis ſuper incudem
              <lb/>
            tunditur) his verò igneam naturam conſecutis acerrimam illam
              <lb/>
            vrendi vim concedunt, ob maiorem nimirum, quàm in carbone,
              <lb/>
            ſubiectæ materiæ denſitatem. </s>
            <s xml:id="echoid-s3204" xml:space="preserve">Quid enim, ſi defæcatus chalybs,
              <lb/>
            vel puriſſimum aurum incandeſcat? </s>
            <s xml:id="echoid-s3205" xml:space="preserve">aut perpaucæ, aut omnino
              <lb/>
            nullę ſunt particulæ, quarum natura mutationem ſubeat, corru-
              <lb/>
            ptàque Metalli formâ prorſus igneſcat; </s>
            <s xml:id="echoid-s3206" xml:space="preserve">tota tamen candens maſ-
              <lb/>
            ſa nec exiguam pro ignitarum particularum portione </s>
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