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

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          <pb file="0011" n="11"/>
          <figure number="2">
            <image file="0011-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/0011-01"/>
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        <div xml:id="echoid-div8" type="section" level="1" n="8">
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            <emph style="bf">AD LECTOREM.</emph>
          </head>
          <p>
            <s xml:id="echoid-s1" xml:space="preserve">DE Conicis Sectionibus & </s>
            <s xml:id="echoid-s2" xml:space="preserve">Cir-
              <lb/>
            culo novi quid adferimus,
              <lb/>
            Amice Lector, ſi tamen ita vo-
              <lb/>
            cari queat, quod æternâ le-
              <lb/>
            ge definitum conſtitutum que,
              <lb/>
            quale nunc eſt, perpetuò fuit.
              <lb/>
            </s>
            <s xml:id="echoid-s3" xml:space="preserve">Sic quod recens effoditur, no-
              <lb/>
            vum quis aurum dicat. </s>
            <s xml:id="echoid-s4" xml:space="preserve">Sic ſtellas in cœlo novas,
              <lb/>
            quæ ſuperioribus ſæculis incognitæ, noſtrorum
              <lb/>
            artificio deteguntur. </s>
            <s xml:id="echoid-s5" xml:space="preserve">Neque verò his Geometri-
              <lb/>
            cum Theorema ullum vetuſtate cedit, ſed nos
              <lb/>
            novitatem ſingulis tribuimus, prout quæque ſe-
              <lb/>
            ſe nobis offerunt fiuntque manifeſta. </s>
            <s xml:id="echoid-s6" xml:space="preserve">Itaque & </s>
            <s xml:id="echoid-s7" xml:space="preserve">
              <lb/>
            inſcripti trigoni Parabola ante Archimedem ſeſ-
              <lb/>
            quitertia fuiſſe dicenda eſt; </s>
            <s xml:id="echoid-s8" xml:space="preserve">neque illa minùs
              <lb/>
            immutabili veritate reliquarum Sectionum Cir-
              <lb/>
            culique portionibus ſemper inerant, quæ nunc
              <lb/>
            circa eas prodimus, licet antehac nemini, de
              <lb/>
            quo quidem ad nos pervenerit, comperta fuiſſe
              <lb/>
            conſtet vel determinata. </s>
            <s xml:id="echoid-s9" xml:space="preserve">Damus autem non iſti,
              <lb/>
            quam retulimus, Archimedeæ ſimilem determi-
              <lb/>
            nationem, neque vel ipſa rerum natura, poſt
              <lb/>
            tot ſubtiliſſimorum hominum deluſos conatus,
              <lb/>
            ſpem reliquiſſe videtur tale quid unquam de fi-
              <lb/>
            guris, quas tractandas ſumpſimus, expectandi: </s>
            <s xml:id="echoid-s10" xml:space="preserve">
              <lb/>
            Verùm id præſtitiſſe profitemur, quod in </s>
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