. Anatomischer Anzeiger. Anatomie, Vergleichende; Anatomie, Vergleichende. 231 Glasmalereien und Material, es gibt sehr große Änderungen von den Bedingungen, die in den Zellen der gut gefütterten Tieren gefunden, um beachtet zu werden. Die ganze Zytoplasma der Zellen hat das Aussehen eines groben Schaumstruktur. Hier und da können die Reste der zuvor bestehenden feste Partikel von bis gespeichert Material gefunden werden. Mit dem Mangel an Nahrungsmitteln und die daraus resultierende Nachfrage nach Storage liefert ein Verschwinden der Energie erzeugenden Substanzen innerhalb der Nervenzellen während der Zeit des Überflusses gespeichert. Limas Maximus. Unsere

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. Anatomischer Anzeiger. Anatomy, Comparative; Anatomy, Comparative. 231 and stained material, there are to be noticed very great changes from the conditions found in the cells of the well fed animals. The whole cytoplasm of the cells has the appearance of a coarse foam structure. Here and there may be found the remnants of previously existing solid particles of stored up material. With the lack of food and the consequent demand upon the storage supplies there has been a disappearance of the energy-producing substances stored within the nerve cells during the time of plenty. Limas maximus. Our previous reports concerning the pigmented granules found in the ganglion cells of Limax maximus are now subject to certain modi- fications on account of the fact that the length of time during which the animals were under obser- vation was not so long as it should have been. We are now in position to make a more complete report upon this species. In March 1909 the junior author secured from California a large number of specimens of the mollusc in question. As in our previous studies, a part were killed at once and their nerve cells examined, some in the fresh un- stained condition, others after being sectioned and stained. As in the examinations previously made, it was found that the nerve cells were well supplied with pigmented granules and with the more transparent vacuoles. The length of the journey (more than three thousand miles) made by these slugs, their con-. Fig. 3. Limax maximus. Photo- graph of nerve cells under the ^/j, inch homog. immersion objective. The animal was transported 3500 miles and was without food six months. Small granules and vacuoles are scattered through the cytoplasm. With longer starvation other specimens showed a decrease, or even entire disappearance, of granules and a corresponding increase in the number of clear vacuoles. stant jarring, lack of food, etc., had all acted as more or less constant sources of stimulation, and had resulted in usin

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• bookcentury1900
• bookdecade1910
• bookpublisherjenag
• bookyear1910