. The cell; outlines of general anatomy and physiology. Fig. 78.—Nucleus of a sperm-mother-cell ofSalainandra maculata preparatory to spindle is situated between the two centro-somes. (After Hermann (VI. 29), PI. 31, Fig. 7.) 186 THE CELL. Fig. 79. — Diagrammatic repre-sentation of the segmentation of thenucleus (after Flemming). Stagein which the nuclear segments areairanged in the equator of thespindle. thicker, and are grouped around the spindle in the form of a com-plete ring, the arrangement being that described by Flemming as the mother-star. The loop-like shapeof the segmen
. The cell; outlines of general anatomy and physiology. Fig. 78.—Nucleus of a sperm-mother-cell ofSalainandra maculata preparatory to spindle is situated between the two centro-somes. (After Hermann (VI. 29), PI. 31, Fig. 7.) 186 THE CELL. Fig. 79. — Diagrammatic repre-sentation of the segmentation of thenucleus (after Flemming). Stagein which the nuclear segments areairanged in the equator of thespindle. thicker, and are grouped around the spindle in the form of a com-plete ring, the arrangement being that described by Flemming as the mother-star. The loop-like shapeof the segments is now most clearlydefined. They are invariably so ar-ranged that the angle of the loop isdirected towards the axis of thespindle, whilst its arms point towardsthe surface of the cell. All of thetwenty-four loops lie pretty accu-rately in the same plane, which, sinceit bisects the spindle at right angles,is called the equatorial plane; it isidentical with the plane of divisionwrhich develops later. When seenfrom either of the poles the chromatinfigure has the shape of a star whoserays are formed of the arms of the V-shaped loops, and whosecentre is traversed by the bundle of achromatin fibrils whichcompose the nuclear spindle. This point o
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Keywords: ., bookcentury1800, bookdecade1890, bookidcelloutlines, bookyear1895
