Bernstein, Aaron, Naturwissenschaftliche Volksbücher, Bd. 12-16, 1897

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          <p>
            <s xml:id="echoid-s2594" xml:space="preserve">
              <pb o="67" file="0199" n="199"/>
            zu erblicken. </s>
            <s xml:id="echoid-s2595" xml:space="preserve">— Wenn ein gleiches beim Menſchenauge oder
              <lb/>
            den Augen mehrerer Tiere nicht der Fall iſt, ſo rührt es nur
              <lb/>
            von der Undurchſichtigkeit eines ſchwarzen Farbeſtoffes in einer
              <lb/>
            der Umhüllungshäute her; </s>
            <s xml:id="echoid-s2596" xml:space="preserve">nimmt man dieſe in geeigneter
              <lb/>
            Weiſe an einer Stelle der Hinterwand ab, ſo kann man das
              <lb/>
            Bildchen auch in ſolchen Augen zeigen.</s>
            <s xml:id="echoid-s2597" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2598" xml:space="preserve">Daß das Auge eine Kamera-Obſcura, und zwar eine
              <lb/>
            ſolche nach denſelben Geſetzen der Optik, wie die künſtliche
              <lb/>
            Kamera iſt, welche wir verfertigt haben, ſteht außer allem
              <lb/>
            Zweifel. </s>
            <s xml:id="echoid-s2599" xml:space="preserve">Das Auge iſt nur unendlich beſſer, vorteilhafter,
              <lb/>
            geſetzmäßiger, dauerhafter, und mit merkwürdiger Vorſorge
              <lb/>
            verfertigt. </s>
            <s xml:id="echoid-s2600" xml:space="preserve">Es iſt nicht nur all das, was drum und dran iſt,
              <lb/>
            ſo weit wir es bis jetzt verſtehen, ſo angelegt, daß wir es
              <lb/>
            überaus geiſtreich und ſcharfſinnig nennen müſſen, ſondern es
              <lb/>
            giebt noch gar vieles im Auge, zu deſſen Weisheit wir uns
              <lb/>
            noch nicht erhoben haben; </s>
            <s xml:id="echoid-s2601" xml:space="preserve">das heißt, wir klugen Menſchen
              <lb/>
            ſehen noch gar vieles nicht ein, was wir Geſcheidtes, ohne es
              <lb/>
            zu wiſſen, mit zur Welt bringen.</s>
            <s xml:id="echoid-s2602" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2603" xml:space="preserve">Indem wir auf die erkannten und die noch unerklärten
              <lb/>
            Vorzüge des Auges recht bald unſere Aufmerkſamkeit richten
              <lb/>
            wollen, haben wir für jetzt nur noch über den nunmehr bereits
              <lb/>
            beſprochenen Hauptteil des Inhalts der Augenkugel, über den
              <lb/>
            die Hälfte des Kugelraumes ausfüllenden Glaskörper, einige
              <lb/>
            Bemerkungen zu machen, welche die gegenwärtig in Aufſchwung
              <lb/>
            begriffene Augenheilkunde betreffen.</s>
            <s xml:id="echoid-s2604" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s2605" xml:space="preserve">Es iſt leicht einzuſehen, daß Trübungen in dieſem Glas-
              <lb/>
            körper das Bildchen im Auge, und ſomit das Sehen desſelben
              <lb/>
            beeinträchtigen; </s>
            <s xml:id="echoid-s2606" xml:space="preserve">nun iſt es mit dem Glaskörper nicht wie mit
              <lb/>
            der Linſe, welche man herausholen und durch ein danach ge-
              <lb/>
            ſchliffenes Brillenglas erſetzen kann. </s>
            <s xml:id="echoid-s2607" xml:space="preserve">Denn der Glaskörper iſt
              <lb/>
            unmittelbar mit einem Netz eines Nerven in Berührung, der
              <lb/>
            eigentlich das Sehen vermittelt, und der mit verletzt würde,
              <lb/>
            wenn man den Glaskörper etwa abnehmen und ihn </s>
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