Casati, Paolo, De igne dissertationes physicae, 1686

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            <s xml:id="echoid-s19748" xml:space="preserve">
              <pb o="179" file="0607" n="607" rhead="De ignibus Cœleſtibus."/>
            naturam, ad ſimilitudinem gallinæ cubantis, vitalem virtutem bis,
              <lb/>
            quæ fovebantur, initians. </s>
            <s xml:id="echoid-s19749" xml:space="preserve">Cum verò lux nondum prodiiſſet, quæ
              <lb/>
            tenebras abyſſi faciem involuentes diſcuteret, calidam aliquam
              <lb/>
            naturam agnoſcere neceſſe eſt ſuapte naturâ à luce ſejunctam;
              <lb/>
            </s>
            <s xml:id="echoid-s19750" xml:space="preserve">adeóque Aërem Spiritûs vocabulo comprehenſum aut calidum
              <lb/>
            per ſe fuiſſe, aut ſaltem igniculis minimè lucidis abundâſſe: </s>
            <s xml:id="echoid-s19751" xml:space="preserve">
              <lb/>
            igniculos ſcilicet non lucidos voco tenues naturas vim haben-
              <lb/>
            tes caloris, quæ cum cientur & </s>
            <s xml:id="echoid-s19752" xml:space="preserve">agitantur motu ſuo, proximas
              <lb/>
            alias particulas commovent, atque permiſcent: </s>
            <s xml:id="echoid-s19753" xml:space="preserve">ſed quia motu
              <lb/>
            illo exporrectionis, & </s>
            <s xml:id="echoid-s19754" xml:space="preserve">contractionis, quem lucis proprium eſſe
              <lb/>
            olim conſtituimus, carere deprehenduntur, ideò non lucent: </s>
            <s xml:id="echoid-s19755" xml:space="preserve">
              <lb/>
            lux autem fortaſſe nulla eſt omni prorſus calore privata; </s>
            <s xml:id="echoid-s19756" xml:space="preserve">plu-
              <lb/>
            rimæ ſiquidem lucidæ particulæ, quæ fuerint in unum coactæ,
              <lb/>
            ut ſub aſpectum cadant, dum ſe ſingulæ explicant atque con-
              <lb/>
            trahunt, ſe pariter viciſſim pellunt atque repellunt, motumque
              <lb/>
            concipiunt calidis quibuſque ac igneis naturis congruentem,
              <lb/>
            ita ut duplicem ſenſum moveant, videlicet oculorum quâ lux,
              <lb/>
            tactûs quâ calor. </s>
            <s xml:id="echoid-s19757" xml:space="preserve">Hinc S. </s>
            <s xml:id="echoid-s19758" xml:space="preserve">Auguſt. </s>
            <s xml:id="echoid-s19759" xml:space="preserve">tom. </s>
            <s xml:id="echoid-s19760" xml:space="preserve">10. </s>
            <s xml:id="echoid-s19761" xml:space="preserve">pag. </s>
            <s xml:id="echoid-s19762" xml:space="preserve">210. </s>
            <s xml:id="echoid-s19763" xml:space="preserve">Calor, inquit
              <lb/>
            & </s>
            <s xml:id="echoid-s19764" xml:space="preserve">ſplendor in uno radio ſunt, ſed calor exſiccat, ſplendor illuminat; </s>
            <s xml:id="echoid-s19765" xml:space="preserve">
              <lb/>
            aliud ſuſcipit calor, aliud ſpendor. </s>
            <s xml:id="echoid-s19766" xml:space="preserve">Et licèt calor & </s>
            <s xml:id="echoid-s19767" xml:space="preserve">ſplendor ab invi-
              <lb/>
            cem non queant ſeparari, ſuſcipit ſplendor illuminationem non fer-
              <lb/>
            vorem, ſuſcipit calor fervorem non illuminationem. </s>
            <s xml:id="echoid-s19768" xml:space="preserve">Sed quia ſenſus
              <lb/>
            tangendi hebetior eſt quàm ſenſus videndi, hic facilè movetur
              <lb/>
            appulſu æthereorum corpuſculorum à lucido corpore propul-
              <lb/>
            ſorum, ille verò non percipit calorem niſi excipiendo igniculos
              <lb/>
            immiſſos à corpore calido: </s>
            <s xml:id="echoid-s19769" xml:space="preserve">id quod tamen non fit ex multo
              <lb/>
            intervallo, neque à paucis & </s>
            <s xml:id="echoid-s19770" xml:space="preserve">languidis igniculis: </s>
            <s xml:id="echoid-s19771" xml:space="preserve">ideò plura
              <lb/>
            corpora lucida videmus, quorum calorem non ſentimus. </s>
            <s xml:id="echoid-s19772" xml:space="preserve">Porrò
              <lb/>
            igniculos illos calore præditos, quo aquæ foverentur & </s>
            <s xml:id="echoid-s19773" xml:space="preserve">intepe-
              <lb/>
            ſcerent, non paucos fuiſſe oportet per aërem diſperſos atque
              <lb/>
            vagantes, ſed benè multos.</s>
            <s xml:id="echoid-s19774" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s19775" xml:space="preserve">Maur. </s>
            <s xml:id="echoid-s19776" xml:space="preserve">Hos verò, ſi cum ſingulis comparentur ſinguli, pror-
              <lb/>
            ſus homogeneos affirmare nulla probabilis ratio nos cogit,
              <lb/>
            quippe quorum naturæ ſimilitudo ad Univerſi concinnitatem
              <lb/>
            nihil contuliſſet, nec apta fuiſſet ad futuram corporum mixto-
              <lb/>
            rum coagmentationem. </s>
            <s xml:id="echoid-s19777" xml:space="preserve">Immò quemadmodum in terrâ pluri-
              <lb/>
            ma Salium genera, atque Sulphurum fuere condita, ita ſpiri-
              <lb/>
            tuum atque aliorum igniculorum plures ſpecies circumplexas
              <lb/>
            fuiſſe abyſſum aquarum, quas foverent, non eſt à ratione alie-
              <lb/>
            num. </s>
            <s xml:id="echoid-s19778" xml:space="preserve">Utrùm autem dicendum ſit præter Spiritûs, & </s>
            <s xml:id="echoid-s19779" xml:space="preserve">quos
              <lb/>
            vocare placuit Igniculos, immiſtam tertiam aliam </s>
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