Casati, Paolo, De igne dissertationes physicae, 1686

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            <s xml:id="echoid-s1986" xml:space="preserve">
              <pb o="61" file="0073" n="73" rhead="De ignis loco."/>
            fornace recedendum, vnum pariter addam in rem noſtram maxi-
              <lb/>
            mè opportunum. </s>
            <s xml:id="echoid-s1987" xml:space="preserve">Satis notum eſt lapides in calcem excoctos mul-
              <lb/>
            to leuiores fieri, quàm cùm in flumine colligebantur, aut ex ru-
              <lb/>
            pe excindebantur: </s>
            <s xml:id="echoid-s1988" xml:space="preserve">Nam ſaxa, vt ait Vitruuius lib.</s>
            <s xml:id="echoid-s1989" xml:space="preserve">2. </s>
            <s xml:id="echoid-s1990" xml:space="preserve">cap.</s>
            <s xml:id="echoid-s1991" xml:space="preserve">5.</s>
            <s xml:id="echoid-s1992" xml:space="preserve">*ex-*
              <lb/>
            *cocto liquore circiter tertiâ parte ponderis imminuta eß inueniun-*
              <lb/>
            *tur.</s>
            <s xml:id="echoid-s1993" xml:space="preserve">* Si tamen recentem calcem viuam fortiorem (antequam ex
              <lb/>
            aëre halitus aqueos exugat, quibus illa extinguatur) igni vehe-
              <lb/>
            menti in catino expoſueris, poſt duas aut tres horas eductam,
              <lb/>
            & </s>
            <s xml:id="echoid-s1994" xml:space="preserve">bilanci ſtatim impoſitam deprehendes auctam pondere non
              <lb/>
            contemnendo: </s>
            <s xml:id="echoid-s1995" xml:space="preserve">Nam Maſſula pendens drachmas duas inuenta eſt
              <lb/>
            acquiſiuiſſe in pondere grana viginti nouem ſpatio horarum dua-
              <lb/>
            rum: </s>
            <s xml:id="echoid-s1996" xml:space="preserve">id quod tribuendum videtur additamento igniculorum;
              <lb/>
            </s>
            <s xml:id="echoid-s1997" xml:space="preserve">quorum pariter acceſſionem factam in excoquendo latere non le-
              <lb/>
            uis eſt coniectura, ſulphure ſcilicet vnâ cum ſalinis particulis li-
              <lb/>
            gnorum peruadente meatus lapidis, ſeque terreis illius particulis
              <lb/>
            commiſcente. </s>
            <s xml:id="echoid-s1998" xml:space="preserve">Imò catinos ipſos (quos Cupellas dicimus) ex oſ-
              <lb/>
            ſium cineribus confectos, ſi primùm expendantur accuratâ bilance,
              <lb/>
            vbi iam probè incaluerint, & </s>
            <s xml:id="echoid-s1999" xml:space="preserve">omnis prorſus vapor auolauerit, dein-
              <lb/>
            de in furno probatorio ad duas ſaltem horas vehementiæ ignis per-
              <lb/>
            miſeris, candentes extractos, & </s>
            <s xml:id="echoid-s2000" xml:space="preserve">ſtatim librâ examinatosdeprehendes
              <lb/>
            auctos pondere, quod non niſi ab Igne lucrari potuerunt: </s>
            <s xml:id="echoid-s2001" xml:space="preserve">Nam ſi
              <lb/>
            in ipſâ librâ tandiu illos ſubſiſtere permiſeris, quoad omnino re-
              <lb/>
            frixerint, tunc demum aliud pondus accedet ex aquei vaporis, quo
              <lb/>
            imbutus eſt aër, acceſſione.</s>
            <s xml:id="echoid-s2002" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2003" xml:space="preserve">Maur. </s>
            <s xml:id="echoid-s2004" xml:space="preserve">Ignem grauem eſſe non leuis mihi iniecta eſt iamdudum
              <lb/>
            ſuſpicio, cùm incidi in *Diſſertationes de Terrâ machinis motâ,*
              <lb/>
            quamuis Author ab illâ, tunc alienâ, quæſtione maluerit abſti-
              <lb/>
            nere. </s>
            <s xml:id="echoid-s2005" xml:space="preserve">Sed vbi nouiſſimè oblatus eſt libellus, cui titulum fecit
              <lb/>
            *De Flammæ ponderabilitate* acutiſſimus Naturæ veſtigator Boy-
              <lb/>
            le, in hanc ſententiam ita me inclinatum tot experimentis fa-
              <lb/>
            teor, vt in maximam veriſimilitudinem penè tranſierit coniectu-
              <lb/>
            ra. </s>
            <s xml:id="echoid-s2006" xml:space="preserve">Quid enim laminæ cupreæ drachmarum duarum & </s>
            <s xml:id="echoid-s2007" xml:space="preserve">gran. </s>
            <s xml:id="echoid-s2008" xml:space="preserve">25
              <lb/>
            pondus habentis grauitatem auxit granis ferè 32? </s>
            <s xml:id="echoid-s2009" xml:space="preserve">niſi ſubiecta
              <lb/>
            ſulphuris ardentis flamma, ex qua, licèt ſulphur inſigni inter-
              <lb/>
            uallo abeſſet à laminâ, igniculi in cuprum penetrârunt, quod
              <lb/>
            & </s>
            <s xml:id="echoid-s2010" xml:space="preserve">nonnihil intumuiſſe conſpiciebatur. </s>
            <s xml:id="echoid-s2011" xml:space="preserve">Id quod & </s>
            <s xml:id="echoid-s2012" xml:space="preserve">argenti re-
              <lb/>
            purgati laminæ drachmæ vnius (ſi tamen grana duo adiecta in-
              <lb/>
            tellexeris) contingit æquali duarum horarum ſpatio, nam & </s>
            <s xml:id="echoid-s2013" xml:space="preserve"/>
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