Huygens, Christiaan, Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica

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          <p>
            <s xml:id="echoid-s6283" xml:space="preserve">
              <pb o="566" file="0298" n="313" rhead="CHRIST. HUGENII"/>
            ne, omnes mirabiles Saturni facies ſicut mox demonſtrabi-
              <lb/>
            tur, eo referri poſſe inveni. </s>
            <s xml:id="echoid-s6284" xml:space="preserve">Et hæc ea ipſa hypotheſis eſt
              <lb/>
            quam anno 1656 die 25 Martii permixtis literis una cum
              <lb/>
              <note symbol="*" position="left" xlink:label="note-0298-01" xlink:href="note-0298-01a" xml:space="preserve">vide ſupra
                <lb/>
              pag. 523.</note>
            obſervatione Saturniæ Lunæ edidimus .</s>
            <s xml:id="echoid-s6285" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s6286" xml:space="preserve">Erant enim Literæ aaaaaaa ccccc d eeeee g hiiiiiii
              <lb/>
            llllmmnnnnnnnnnooooppqrrstttttuuuuu ; </s>
            <s xml:id="echoid-s6287" xml:space="preserve">
              <note symbol="*" position="left" xlink:label="note-0298-02" xlink:href="note-0298-02a" xml:space="preserve">vide pag.
                <lb/>
              526.</note>
            ſuis locis repoſitæ hoc ſignificant, Annulo cingitur, tenui,
              <lb/>
            plano, nuſquam cohærente, ad eclipticam inclinato. </s>
            <s xml:id="echoid-s6288" xml:space="preserve">La-
              <lb/>
            titudinem vero ſpatii inter annulum globumque Saturni in-
              <lb/>
            terjecti, æquare ipſius annuli latitudinem vel excedere etiam,
              <lb/>
            figura Saturni ab aliis obſervata, certiuſque deinde quæ mi-
              <lb/>
            hi ipſi conſpecta fuit, edocuit: </s>
            <s xml:id="echoid-s6289" xml:space="preserve">maximamque item annuli
              <lb/>
            diametrum eam circiter rationem habere ad diametrum Sa-
              <lb/>
              <note position="left" xlink:label="note-0298-03" xlink:href="note-0298-03a" xml:space="preserve">TAB. XLIX.
                <lb/>
              fig. 2.</note>
            turni quæ eſt 9 ad 4. </s>
            <s xml:id="echoid-s6290" xml:space="preserve">Ut vera proinde forma ſit ejuſmodi
              <lb/>
            qualem appoſito ſchemate adumbravimus.</s>
            <s xml:id="echoid-s6291" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s6292" xml:space="preserve">Cæterum obiter hic iis reſpondendum cenſeo, quibus
              <lb/>
              <note position="left" xlink:label="note-0298-04" xlink:href="note-0298-04a" xml:space="preserve">Occurritur iis
                <lb/>
              quæ de an-
                <lb/>
              nulo objici
                <lb/>
              poſſent.</note>
            novum nimis ac fortaſſe abſonum videbitur, quod non tan-
              <lb/>
            tum alicui cæleſtium corporum figuram ejuſmodi tribuam,
              <lb/>
            cui ſimilis in nullo hactenus corum deprehenſa eſt, cum con-
              <lb/>
            tra pro certo creditum fuerit, ac veluti naturali ratione con-
              <lb/>
            ſtitutum, ſolam iis ſphæricam convenire, ſed & </s>
            <s xml:id="echoid-s6293" xml:space="preserve">quod an-
              <lb/>
            nulum hunc ſolidum ac permanentem (talem enim arbitror)
              <lb/>
            Saturno ita circumponam, ut nullis compagibus retinaculiſ-
              <lb/>
            ve ei cohæreat, ac nihilominus æqualem ab omni parte di-
              <lb/>
            ſtantiam ſervet, unáque cum Saturno motu velociſſimo
              <lb/>
            transferatur. </s>
            <s xml:id="echoid-s6294" xml:space="preserve">Hos autem reputare illud oportet, non ex
              <lb/>
            mera inventione atque arbitrio meo hanc me fingere hypo-
              <lb/>
            theſin, ſicut Aſtronomi ſuos epicyclos, nuſquam in cælo
              <lb/>
            apparentes; </s>
            <s xml:id="echoid-s6295" xml:space="preserve">ſed oculorum ſenſu, quo nempe reliquarum re-
              <lb/>
            rum omnium figuras dignoſcimus, hunc quoque annulum
              <lb/>
            ſatis evidenter me percipere. </s>
            <s xml:id="echoid-s6296" xml:space="preserve">Neque verò cauſam eſſe cur
              <lb/>
            corpus aliquod inter cæ eſtia hac forma præditum exiſtere
              <lb/>
            nequeat, quæ ſi non ſphærica at ſaltem rotunda eſt, atque
              <lb/>
            ejuſmodi ut motum circa centrum æquè commodè atque
              <lb/>
            ipſi ſphærica ſuſcipiat. </s>
            <s xml:id="echoid-s6297" xml:space="preserve">Nam minus utique mirandum, hu-
              <lb/>
            juſmodi figuram tali corpori tributam, quam </s>
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