. The cell; outlines of general anatomy and physiology. eingarranged in two groups near the centrosomes, a, a, as would occurnormally, a number of those which are within the attraction sphereof the centrosome b of the neighbouring foreign spindle have beendrawn towards it. In a word : the centrosome of the one spindlehas evidently exerted a disturbing influence upon the arrangementand distribution of the daug-hter-seerments of the other spindle. Henneguy has observed triasters, suchas the one depicted in Fig. 135, and alsotetrasters, in the germinal cells of thesame object; these gradually sep
. The cell; outlines of general anatomy and physiology. eingarranged in two groups near the centrosomes, a, a, as would occurnormally, a number of those which are within the attraction sphereof the centrosome b of the neighbouring foreign spindle have beendrawn towards it. In a word : the centrosome of the one spindlehas evidently exerted a disturbing influence upon the arrangementand distribution of the daug-hter-seerments of the other spindle. Henneguy has observed triasters, suchas the one depicted in Fig. 135, and alsotetrasters, in the germinal cells of thesame object; these gradually separatedthemselves from the layer of merocytes. At the close of this fourth section wemay mention the degeneration processes,which sometimes occur in cell nuclei,apparently as the result of injuriousinfluences. Especially in the sexual Fig. with a ,.„„„,.. 1~* l n centrosomic nuclear figure: oigans, individual germ cells, or groups e m . , ° ° ° or from a Trout embryo. (After of them, appear to degenerate before Henneguy.). 246 THE CELL they have reached maturity, as has been observed by Flemmingand Hermann in Salamandra metadata, and by myself in Ascarismegalocephala. The framework of the nuclei disintegrates, andthe nnclein collects together into a compact mass, which is re-markable for its strong affinity for the most various stains. Theprotoplasm diminishes in quantity, in proportion to that presentin similar normal germ cells. Such a stunted cell with a com- B
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Keywords: ., bookcentury1800, bookdecade1890, bookidcelloutlines, bookyear1895
