Casati, Paolo, De igne dissertationes physicae, 1686

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            <s xml:id="echoid-s2225" xml:space="preserve">
              <pb o="70" file="0082" n="82" rhead="Diſſertatio Tertia."/>
            attrectantes ſe ipſi docerent, quid de Solis calore tellurem per-
              <lb/>
            uadente probabiliter opinandum ſit. </s>
            <s xml:id="echoid-s2226" xml:space="preserve">Equidem, fateor, in me-
              <lb/>
            tallorum cauernas nunquam deſcendi, neque altius terram pene-
              <lb/>
            traui quâm domeſtica hypogæa, cum aliquando ruſticarer: </s>
            <s xml:id="echoid-s2227" xml:space="preserve">tan-
              <lb/>
            tum porrò abeſt, vt ſummâ æſtate aliquid caloris ibi perciperem,
              <lb/>
            vt potiùs inde me citò proripere coactus fuerim, ne frigore nimio
              <lb/>
            correptus valetudinis integritatem imminuerem. </s>
            <s xml:id="echoid-s2228" xml:space="preserve">Dabunt igitur
              <lb/>
            mihi veniam Philoſophi illi, quod Solis calorem adhuc profun-
              <lb/>
            diùs terram permeare non credam. </s>
            <s xml:id="echoid-s2229" xml:space="preserve">Quid verò in abditâ illâ terræ
              <lb/>
            regione contingat, non aliunde certiùs diſcere poſſumus, quàm
              <lb/>
            ex ijs, qui metallorum fodinas curioſiùs perueſtigârunt: </s>
            <s xml:id="echoid-s2230" xml:space="preserve">præter
              <lb/>
            has enim nulla depreſſior cauerna innotuit; </s>
            <s xml:id="echoid-s2231" xml:space="preserve">nemo quippe telluris
              <lb/>
            viſcera tam altè ſcrutaretur, niſi operæ pretium quæreret. </s>
            <s xml:id="echoid-s2232" xml:space="preserve">Omnes
              <lb/>
            autem, quoſcunque legerim de huiuſmodi fodinis diſſerentes, ſu-
              <lb/>
            premæ telluris regioni frigus, inferiori teporem primùm, deinde
              <lb/>
            calorem, qui ſenſim augeſcit, tribuunt: </s>
            <s xml:id="echoid-s2233" xml:space="preserve">& </s>
            <s xml:id="echoid-s2234" xml:space="preserve">ſpeciatim Hungari-
              <lb/>
            cas aurifodinas deſcribens Io: </s>
            <s xml:id="echoid-s2235" xml:space="preserve">Baptiſta Morinus in Relatione de locis
              <lb/>
            Subterraneis adiectâ ad eam, quam ſcripſit Mundi Sublunaris
              <lb/>
            Anatomiam (pag.</s>
            <s xml:id="echoid-s2236" xml:space="preserve">131.) </s>
            <s xml:id="echoid-s2237" xml:space="preserve">narrat ſe deprehendiſse Menſe Iulio re-
              <lb/>
            gionem ſuperiorem terræ frigidiſſimam vſque ad pedes 480 circi-
              <lb/>
            ter; </s>
            <s xml:id="echoid-s2238" xml:space="preserve">altiùs deſcendenti occurrìſſe calorem, qui vſque eò acrior in
              <lb/>
            inferioribus ſpeluncæ partibus ſentiebatur, vt effodiendi laborem
              <lb/>
            ſuſcipere non poſſent operarij niſi nudi: </s>
            <s xml:id="echoid-s2239" xml:space="preserve">id quod in omnibus Hun-
              <lb/>
            gariæ fodinis obſeruari teſtatur. </s>
            <s xml:id="echoid-s2240" xml:space="preserve">His omnino affinia ſunt, quæ
              <lb/>
            ſcripſit Io: </s>
            <s xml:id="echoid-s2241" xml:space="preserve">de Beguinus Tyrocinij Chymici lib.</s>
            <s xml:id="echoid-s2242" xml:space="preserve">2.</s>
            <s xml:id="echoid-s2243" xml:space="preserve">cap.</s>
            <s xml:id="echoid-s2244" xml:space="preserve">14. </s>
            <s xml:id="echoid-s2245" xml:space="preserve">*Cum enim,*
              <lb/>
            inquit, *ſuperiori æſtate, in Hungariâ, medio milliari in Schem-*
              <lb/>
            *nitz, in argenti fodinam mille quingentos circiter cubitos pro-*
              <lb/>
            *fundam deſcendiſſem; </s>
            <s xml:id="echoid-s2246" xml:space="preserve">à foſſoribus, qui ob ſummam mineræ æſtum*
              <lb/>
            *veſtibus, & </s>
            <s xml:id="echoid-s2247" xml:space="preserve">ipſo induſio exuti laborabant, didici; </s>
            <s xml:id="echoid-s2248" xml:space="preserve">Vapores mi-*
              <lb/>
            *nerales à centro Terræ frequenter ſurſum ferri, eorumque lu-*
              <lb/>
            *cernas, & </s>
            <s xml:id="echoid-s2249" xml:space="preserve">ipſoſmet, ni ſubitò recedant, extinguere: </s>
            <s xml:id="echoid-s2250" xml:space="preserve">aliquan-*
              <lb/>
            *to autem tempore poſt, in eodem loco illos halitus ad parietes fo-*
              <lb/>
            *dinæ in maſſam, quæ leui contactu inſtar olei fluat, coagulatos*
              <lb/>
            *reperiri.</s>
            <s xml:id="echoid-s2251" xml:space="preserve">*</s>
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          <p>
            <s xml:id="echoid-s2252" xml:space="preserve">Quapropter nullus videtur relictus ambigendi locus, vtrùm à
              <lb/>
            Sole, an ab Igne, quaſià Corde terræ, calor ille originem du-
              <lb/>
            cat, qui per venas diffundatur, particulaſque commiſceat, ex
              <lb/>
            quibus foſſilia coĕunt, ſiue ex metallorum aut mineralium, </s>
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