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

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            <s xml:id="echoid-s7273" xml:space="preserve">
              <pb o="607" file="0343" n="360" rhead="IN SYSTEMA SATURNIUM."/>
            ſervationibus repugnat; </s>
            <s xml:id="echoid-s7274" xml:space="preserve">nempe ubi planum annuli directè
              <lb/>
            in oculos incidit, annulus appareret ad inſtar zonæ rectæ,
              <lb/>
            æqualis diametro annuli, ac proinde majoris diametro Satur-
              <lb/>
            ni; </s>
            <s xml:id="echoid-s7275" xml:space="preserve">igitur ad inſtar brachiorum duæ appendices hinc inde
              <lb/>
            Saturnio globo adhærerent: </s>
            <s xml:id="echoid-s7276" xml:space="preserve">cum igitur hac difficultate, & </s>
            <s xml:id="echoid-s7277" xml:space="preserve">
              <lb/>
            hoc nodo inſolubili annularis illa hypotheſis laboraret; </s>
            <s xml:id="echoid-s7278" xml:space="preserve">fin-
              <lb/>
            xit illius auctor, extimam annuli ſuperficiem ineptam eſſe
              <lb/>
            ad luminis repercuſſionem, ac proinde faſciam illam nigri-
              <lb/>
            cantem inde ortum ducere, & </s>
            <s xml:id="echoid-s7279" xml:space="preserve">ob penuriam luminis reper-
              <lb/>
            cuſſi, extantes illas appendices ſub aſpectum noſtrum non
              <lb/>
            cadere: </s>
            <s xml:id="echoid-s7280" xml:space="preserve">Hæc habet pag. </s>
            <s xml:id="echoid-s7281" xml:space="preserve">542. </s>
            <s xml:id="echoid-s7282" xml:space="preserve">545. </s>
            <s xml:id="echoid-s7283" xml:space="preserve">576. </s>
            <s xml:id="echoid-s7284" xml:space="preserve">Aliam cauſam ſubnectit
              <lb/>
            pag. </s>
            <s xml:id="echoid-s7285" xml:space="preserve">585. </s>
            <s xml:id="echoid-s7286" xml:space="preserve">ab obliquitate radiorum illapſorum petitam, qua
              <lb/>
            fiat ut pars annuli ad nos obverſa obliquè dumtaxat illumi-
              <lb/>
            nata non videatur; </s>
            <s xml:id="echoid-s7287" xml:space="preserve">immo hoc alterum addit, ſuperficiem
              <lb/>
            annuli ad nos obverſam minimè à Sole illuminari; </s>
            <s xml:id="echoid-s7288" xml:space="preserve">ac proin-
              <lb/>
            de mirum non eſſe, quod minimè videri poſſit; </s>
            <s xml:id="echoid-s7289" xml:space="preserve">omiſeram,
              <lb/>
            quæ habet pag. </s>
            <s xml:id="echoid-s7290" xml:space="preserve">551. </s>
            <s xml:id="echoid-s7291" xml:space="preserve">de Saturnicolis.</s>
            <s xml:id="echoid-s7292" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s7293" xml:space="preserve">Cuncta hæc facilè difflantur; </s>
            <s xml:id="echoid-s7294" xml:space="preserve">nunquam enim faſciam il-
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            lam nigricantem, quamvis exquiſito teleſcopio uſus videre
              <lb/>
            potui; </s>
            <s xml:id="echoid-s7295" xml:space="preserve">nemo unquam præter illum obſervavit; </s>
            <s xml:id="echoid-s7296" xml:space="preserve">nec tamen
              <lb/>
            teleſcopia noſtra Hugenianis deteriora eſſe crediderim; </s>
            <s xml:id="echoid-s7297" xml:space="preserve">fi-
              <lb/>
            ctitia igitur cenſenda eſt illa faſcia, aut certè vitrorum vitio
              <lb/>
            tribuenda: </s>
            <s xml:id="echoid-s7298" xml:space="preserve">quod autem dicit, extimam illam annuli ſuper-
              <lb/>
            ficiem ad lumen reflectendum ineptam eſſe, vel ex eo falſum
              <lb/>
            eſſe conſtat, quòd in Saturni diſco partes omnes æquali lu-
              <lb/>
            mine perfuſæ videantur: </s>
            <s xml:id="echoid-s7299" xml:space="preserve">Nulla igitur pars ad nos obverſa
              <lb/>
            ad luminis reflexionem inepta eſt. </s>
            <s xml:id="echoid-s7300" xml:space="preserve">Præterea demus ita eſſe,
              <lb/>
            & </s>
            <s xml:id="echoid-s7301" xml:space="preserve">faſciam illam paulò obſcuriorem in Saturni diſco videri;
              <lb/>
            </s>
            <s xml:id="echoid-s7302" xml:space="preserve">nihil tamen obſtaret, quin brachia eodem lumine perſpicua
              <lb/>
            eſſent; </s>
            <s xml:id="echoid-s7303" xml:space="preserve">id eſt extrema ſegmenta apparentis zonæ, in quam
              <lb/>
            annulus hoc ſitu aſpectus projicitur, extantia, & </s>
            <s xml:id="echoid-s7304" xml:space="preserve">excurren-
              <lb/>
            tia hinc inde extra Saturnium globum, viderentur, eodem
              <lb/>
            licèt nigricante colore diluta. </s>
            <s xml:id="echoid-s7305" xml:space="preserve">Ad obliquitatem illapſorum
              <lb/>
            radiorum perperam confugit; </s>
            <s xml:id="echoid-s7306" xml:space="preserve">alioquin in cæteris planetis
              <lb/>
            eadem ratio militaret; </s>
            <s xml:id="echoid-s7307" xml:space="preserve">nempe fieri non poteſt, quin major
              <lb/>
            pars ſuperficiei convexæ, obliquum radiorum ſolarium </s>
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