Casati, Paolo, De igne dissertationes physicae, 1686

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              <pb o="126" file="0138" n="138" rhead="Diſſertatio Quinta."/>
            que tamen terram aut panem itidem rareſcere dicimus, vt aquam
              <lb/>
            in fumum abeuntem. </s>
            <s xml:id="echoid-s3855" xml:space="preserve">Longè ſcilicet aliud eſt intrà diſtractarum
              <lb/>
            particularum interualla admittere ætherem, commune corpus per
              <lb/>
            omnia diffuſum, aliud eſt ingeſto humore aërem aut ætherem à
              <lb/>
            poris excludi, eodemque humore abundantiùs irrumpente, ter-
              <lb/>
            ræ aut panis particulas propelli, ex quo oritur tumor. </s>
            <s xml:id="echoid-s3856" xml:space="preserve">Quando
              <lb/>
            aqua in vaporem ſoluitur vi Caloris, tria contingere intelligo:
              <lb/>
            </s>
            <s xml:id="echoid-s3857" xml:space="preserve">primùm ſe inſinuant igniculi in aquam, atque peruadunt, eo-
              <lb/>
            rumque incurſione pulſantur, & </s>
            <s xml:id="echoid-s3858" xml:space="preserve">agitantur particulæ. </s>
            <s xml:id="echoid-s3859" xml:space="preserve">Alterum
              <lb/>
            huic impulſioni conſequens eſt, quod aqueæ particulæ dum com-
              <lb/>
            mouentur, à ſe inuicem digredientes locum ampliorem occupant,
              <lb/>
            molemque maiorem præſeferunt. </s>
            <s xml:id="echoid-s3860" xml:space="preserve">Tertium eſt, quod in interual-
              <lb/>
            la inter diſiunctas aquæ particulas interiecta, vbi ſe agitant igni-
              <lb/>
            culi, ſuccedit æther ex proximo corpore tantiſper compreſſo ex-
              <lb/>
            preſſus: </s>
            <s xml:id="echoid-s3861" xml:space="preserve">neque enim fieri poteſt, vt corpus aliquod ad ampliora
              <lb/>
            ſpatia ſe explicet, quin proximum ſe contrahere cogatur, aut
              <lb/>
            ſaltem propulſum comprimat aliud ſibi cohærens. </s>
            <s xml:id="echoid-s3862" xml:space="preserve">Ex his tribus
              <lb/>
            primum tanquam cauſa antegreditur raritatem aquæ, immiſſio
              <lb/>
            quippe igniculorum effectrix eſt diffuſionis partium: </s>
            <s xml:id="echoid-s3863" xml:space="preserve">tertium hanc
              <lb/>
            dilatationem conſequitur, ſuccedente æthere in interualla, ne
              <lb/>
            quid inane reliquatur. </s>
            <s xml:id="echoid-s3864" xml:space="preserve">Quare, licèt in rarefactione contingat
              <lb/>
            alienorum corpuſculorum admiſtio, ſiuè vt quid antecedens, ſi-
              <lb/>
            ue vt quid conſequens raritatem, ipſa tamen raritatis notio in eo
              <lb/>
            conſiſtit, quod multum loci exigua materia occupet, quę pro-
              <lb/>
            pterea rareſcere dicitur, cùm ad ampliora ſpatia ſe explicat. </s>
            <s xml:id="echoid-s3865" xml:space="preserve">Cum
              <lb/>
            igitur in motu corpus occupet ſpatium, per quod mouetur, ac pro-
              <lb/>
            pterea plus occupet ſpatij in motu, quàm quieſcens, fieri non
              <lb/>
            poteſt, quin ad ampliora ſpatia ſe dilatet incaleſcens, quando-
              <lb/>
            quidem eius particulæ agitantur: </s>
            <s xml:id="echoid-s3866" xml:space="preserve">ideò Calor dicitur cauſa ra-
              <lb/>
            ritatis.</s>
            <s xml:id="echoid-s3867" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s3868" xml:space="preserve">Maur. </s>
            <s xml:id="echoid-s3869" xml:space="preserve">Perdifficilis & </s>
            <s xml:id="echoid-s3870" xml:space="preserve">perobſcura quæſtio eſt de Rarefactione, in
              <lb/>
            quam nec aduertentes delapſi eſtis: </s>
            <s xml:id="echoid-s3871" xml:space="preserve">ſi verò illam in Vulgarem & </s>
            <s xml:id="echoid-s3872" xml:space="preserve">
              <lb/>
            Philoſophicam, vt quibuſdam placet, partiri volueritis, nullus
              <lb/>
            erit diſputandi ſinis, & </s>
            <s xml:id="echoid-s3873" xml:space="preserve">inſtituta noſtra de Calore diſſertatio, ex
              <lb/>
            huius immiſſione, in fumum reſoluta abibit. </s>
            <s xml:id="echoid-s3874" xml:space="preserve">Quapropter ſiuè
              <lb/>
            ſola contingat particularum diſtractio admiſſo in interualla æthe-
              <lb/>
            re, ſiue diſtractæ particulæ ampliorem Vbicationem nacte maio-
              <lb/>
            rem in molem excreſcant, ſiue quacunque tandem aliâ </s>
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