Bernstein, Aaron, Naturwissenschaftliche Volksbücher, Bd. 6/11, 1897

Table of contents

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            Tier ſind. </s>
            <s xml:id="echoid-s7328" xml:space="preserve">Mit anderen Worten: </s>
            <s xml:id="echoid-s7329" xml:space="preserve">es giebt Weſen, die genau
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            ihrem ganzen Weſen nach die Mitte zwiſchen echten, zweifel-
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            loſen Tieren und echten, zweifelloſen Pflanzen halten.</s>
            <s xml:id="echoid-s7330" xml:space="preserve"/>
          </p>
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            <s xml:id="echoid-s7331" xml:space="preserve">Sie ſind weder vollſtändig Tier noch vollſtändig Pflanze,
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            ſondern ſtehen auf der Stufe zwiſchen beiden Lebensformen, die
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            ſich in ihnen vereinigen.</s>
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          <figure number="108">
            <caption xml:id="echoid-caption102" xml:space="preserve">Fig. 19.
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            Geſtielte Infuſorien, ſtark
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            vergrößert.</caption>
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            <s xml:id="echoid-s7333" xml:space="preserve">Sollte einer oder der andere un-
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            ſerer Leſer meinen, die mit ſelbſt-
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            ſtändiger Bewegung begabten Lebe-
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            weſen müßten wohl ſtets Tiere ſein,
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            weil ſie ſonſt irgendwo angewachſen
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            wären, wie dies bei den Landpflanzen
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            der Fall iſt, ſo wollen wir durch einige
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            Beiſpiele zeigen, wie es wirkliche
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            Tiere giebt, welche feſt angewachſen
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            ſind und wie Pflanzen nach Tierart
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            leben.</s>
            <s xml:id="echoid-s7334" xml:space="preserve"/>
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            <s xml:id="echoid-s7335" xml:space="preserve">Es giebt ganze Maſſen kleiner
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            Tierchen, die man zu den Infuſorien
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            zählt, welche an feine Fäden ange-
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            wachſen ſind, die ſich pfropfenzieher-
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            artig zuſammenziehen und wieder
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            fadenartig ausdehnen können (Fig. </s>
            <s xml:id="echoid-s7336" xml:space="preserve">19).
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            </s>
            <s xml:id="echoid-s7337" xml:space="preserve">Durch dieſes Zuſammenziehen und
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            Dehnen iſt es den Tieren gegönnt, ſich eine kleine Strecke im
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            Waſſer hin und zurück zu bewegen. </s>
            <s xml:id="echoid-s7338" xml:space="preserve">Sie vermögen ſich auch
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            nach rechts und links hin zu begeben, ſoweit es ihnen der Faden,
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            an dem ſie angekettet ſind, geſtattet. </s>
            <s xml:id="echoid-s7339" xml:space="preserve">Meiſthin ſind mehrere
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            ſolcher Tierchen mit ihren Fäden an einen gemeinſchaftlichen
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            Faden gefeſſelt. </s>
            <s xml:id="echoid-s7340" xml:space="preserve">Sie bilden alſo eine Kolonie, eine Familie,
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            eine Geſellſchaft, oder wenn man will, einen Staat, und führen
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            ein höchſt ſozialiſtiſches Leben. </s>
            <s xml:id="echoid-s7341" xml:space="preserve">— Genug, ſie ſind feſtgewachſen
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            und ſind nach jetziger Anſicht aller Gelehrten doch keine Pflanzen.</s>
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