R 



FIG. 5. Cell division in the Salamander. (After Drttner.) 

 A, resting nucleus stage, centrosome below divided. B, skein stage, the chromatin 

 visible as a convoluted band ; the daughter centrosomes have separated. C, the nuclear 

 membrane has disappeared, a few of the chromosomes lying free in the cytoplasm. D, 

 central spindle complete, the chromosomes, already splitting, are being drawn to the spin- 

 dle. E, metaphase. F, anaphase. The chromosomes are drawn to the poles. 



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