. The cell; outlines of general anatomy and physiology. Cells; Anatomy; Physiology; Cells; Anatomy; Physiology. Fig. 75.âA Resting nucleus of a sperm-mother-cell of Salamavdra maculata (after Flemming, PI. 23, Fig. 1; from Hatschek). B Nucleus of a sperm-mother-cell of Sala- mandra maculata. Coil stage. The nuclear threads are already commencing to split longitudinally (diagrammatic, after Flemming, PI. 26, Fig. 1; from Hatschek). with small indentations and swellings. From these, innumerable most delicate fibrils branch off at right angles ; these fibrils, which consist of sti^ands of the lin
. The cell; outlines of general anatomy and physiology. Cells; Anatomy; Physiology; Cells; Anatomy; Physiology. Fig. 75.âA Resting nucleus of a sperm-mother-cell of Salamavdra maculata (after Flemming, PI. 23, Fig. 1; from Hatschek). B Nucleus of a sperm-mother-cell of Sala- mandra maculata. Coil stage. The nuclear threads are already commencing to split longitudinally (diagrammatic, after Flemming, PI. 26, Fig. 1; from Hatschek). with small indentations and swellings. From these, innumerable most delicate fibrils branch off at right angles ; these fibrils, which consist of sti^ands of the linin framework, only become visible as the nuclein withdraws itself from their surface. Later on the nuclein threads become still more clearly defined, and, as the in- dentations and swellings disappear, develop a perfectly smooth sur- face (Fig. 75 B). Kow since they surround the nuclear space on every side, they produce an ap- pearance described by Flemming as the coil figure {spirem, shein). The coil is much more dense in the epithelial cells of Salamandra than in sperm cells, whilst at the same time the threads are much finer and longer (Fig. 76). It is as yet undecided, whether at the outset the coil consists of a single long thread or of several such threads. I agree with. Rabl (VI. 53') that the latter is more t^ n^ -kt ^ *â â â ^v,^i-â-i ^âii V ' Fig. 76.âNucleus of an epithelial cell probable. atthecommencement of division; from A striking difference is now seen ^ SaUnxander larva. Fine coil forma- ° _ tion. The remains of two nucleoli are in the way the various nuclear still present. (After Flemming.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hertwig, Oscar, 1849-1922; Campbell, M. , tr; Campbell, Henry Johnstone, 1859- ed. London, S. Sonnenschein & Co. ; New York, Macmillan &
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