Casati, Paolo, De igne dissertationes physicae, 1686

List of thumbnails

< >
581
581 (153) 		582
582 (154)
583
583 (155) 		584
584 (156)
585
585 (157) 		586
586 (158)
587
587 (159) 		588
588 (160)
589
589 (161) 		590
590 (162)
< >
page |< < (159) of 672 > >|
    <echo version="1.0RC">
      <text xml:lang="la" type="free">
        <div xml:id="echoid-div61" type="section" level="1" n="58">
          <p>
            <s xml:id="echoid-s19000" xml:space="preserve">
              <pb o="159" file="0587" n="587" rhead="De Cometis."/>
            Barbæ aut Caudæ nomen inditum eſt, Cometam eſſe pronun-
              <lb/>
            tiamus; </s>
            <s xml:id="echoid-s19001" xml:space="preserve">his detractis, ſimplex Facis vocabulum retinet. </s>
            <s xml:id="echoid-s19002" xml:space="preserve">Ideò
              <lb/>
            inter Cometas numeratus fuit, quem anno 1527. </s>
            <s xml:id="echoid-s19003" xml:space="preserve">Jo: </s>
            <s xml:id="echoid-s19004" xml:space="preserve">Vogelinus
              <lb/>
            obſervavit, & </s>
            <s xml:id="echoid-s19005" xml:space="preserve">duravit horâ unicâ cum quadrante, atque in
              <lb/>
            Palatinatu viſus eſt inſtar gladii, ut ſcribit Cornelius Gemma;
              <lb/>
            </s>
            <s xml:id="echoid-s19006" xml:space="preserve">hoc diſcrimine remoto, inter Cometas non recenſeretur in
              <lb/>
            tam exiguo vitæ curriculo, & </s>
            <s xml:id="echoid-s19007" xml:space="preserve">tam brevi. </s>
            <s xml:id="echoid-s19008" xml:space="preserve">Quod aliquot ſaltem
              <lb/>
            dies permaneat Cometa, ſinguliſque noctibus ſpectandum ſe
              <lb/>
            præbeat, ita tamen, ut neque ex horizonte emergere, neque
              <lb/>
            infra horizontem deſcendere terram circumeundo, neque per-
              <lb/>
            ficere circulum ſemper apparentem, compertum ſit, illum,
              <lb/>
            exiſtimarem, maximâ ſaltem ex parte, conflatum ex materiâ
              <lb/>
            ſublunari, & </s>
            <s xml:id="echoid-s19009" xml:space="preserve">ſolùm moveri ſimiliter ac Trajectiones. </s>
            <s xml:id="echoid-s19010" xml:space="preserve">Hujuſ-
              <lb/>
            modi fuere Comete, quorum meminit Ariſtoteles lib. </s>
            <s xml:id="echoid-s19011" xml:space="preserve">1. </s>
            <s xml:id="echoid-s19012" xml:space="preserve">Meteor. </s>
            <s xml:id="echoid-s19013" xml:space="preserve">
              <lb/>
            cap. </s>
            <s xml:id="echoid-s19014" xml:space="preserve">7. </s>
            <s xml:id="echoid-s19015" xml:space="preserve">*Omnes*, inquit, *qui noſtris temporibus viſi ſunt, ſinè occaſu*
              <lb/>
            *diſparuerunt in loco ſupra horizontem conſumpti paulatim, ita ut*
              <lb/>
            *neque ullius ſtellæ derelinqueretur corpus, neque plurium*. </s>
            <s xml:id="echoid-s19016" xml:space="preserve">At Come-
              <lb/>
            tas illos, quos in orbem ferri conſtat, ſi quidem in æthereâ
              <lb/>
            regione ſupra Lunam altiſſimè fulgeant, ſi quis urgeat, haud
              <lb/>
            invitus omninſo4; </s>
            <s xml:id="echoid-s19017" xml:space="preserve">ex materiâ ſidereâ, hoc eſt ex Planetarum aſpi-
              <lb/>
            rationibus, conflatos concederem. </s>
            <s xml:id="echoid-s19018" xml:space="preserve">Sin autem infra Lunam
              <lb/>
            ſint, ſidereos halitus majore ex parte, ſed & </s>
            <s xml:id="echoid-s19019" xml:space="preserve">non paucis terrenis
              <lb/>
            exhalationibus commiſtos, comprehendere cenſendi ſunt. </s>
            <s xml:id="echoid-s19020" xml:space="preserve">Sicut
              <lb/>
            enim apud nos, quia corpora quando ſuapte naturâ moventur,
              <lb/>
            gravia deſcendunt, & </s>
            <s xml:id="echoid-s19021" xml:space="preserve">levia aſcendunt, ſi levia gravibus mi-
              <lb/>
            ſceantur, motus ſequitur, pro ut horum aut illorum vis præpol-
              <lb/>
            let: </s>
            <s xml:id="echoid-s19022" xml:space="preserve">ita materia ſiderea in circularem motum prona etiamſi
              <lb/>
            terrenis exhalationibus miſceatur, illas ſecum rapit circa tellu-
              <lb/>
            rem in gyrum. </s>
            <s xml:id="echoid-s19023" xml:space="preserve">Hinc pro diversâ ipſorum halituum ſidereorum
              <lb/>
            naturâ, prout ab his aut illis Planetis prodierunt, & </s>
            <s xml:id="echoid-s19024" xml:space="preserve">pro variâ
              <lb/>
            illorum complexione, quatenus plures aut pauciores ex uno-
              <lb/>
            quoque genere fuerint, multiplex eſt & </s>
            <s xml:id="echoid-s19025" xml:space="preserve">varius Cometæ motus,
              <lb/>
            tum quo ad velocitatem, tum quo ad ſemitam, qua ad hanc
              <lb/>
            aut ad illam plagam Cœli declinat. </s>
            <s xml:id="echoid-s19026" xml:space="preserve">Quia verò halitus illi non
              <lb/>
            valido ac perpetuo nexu inter ſe cohærent, ubi cœperit Cometa
              <lb/>
            diſſolvi, fieri poteſt, ut aliquibus recedentibus reliqui halitus
              <lb/>
            alium motum, & </s>
            <s xml:id="echoid-s19027" xml:space="preserve">aliâ ſemitâ, inſtituant. </s>
            <s xml:id="echoid-s19028" xml:space="preserve">Sic nobis conſideran-
              <lb/>
            tibus molem compoſitam ex pluribus naturis, alia eſt ſecun-
              <lb/>
            dùm ſpeciem gravior aquâ, & </s>
            <s xml:id="echoid-s19029" xml:space="preserve">infrà illam deſcendit; </s>
            <s xml:id="echoid-s19030" xml:space="preserve">alia eſt
              <lb/>
            ſecundùm ſpeciem levior, & </s>
            <s xml:id="echoid-s19031" xml:space="preserve">innatat; </s>
            <s xml:id="echoid-s19032" xml:space="preserve">alia ſecundùm ſpeciem
              <lb/>
            æqualis eſt, & </s>
            <s xml:id="echoid-s19033" xml:space="preserve">intrà aquam quieſcit, quocunque in loco </s>
          </p>
        </div>
      </text>
    </echo>
Impressum