i6 



HISTOLOGY 



substances, are identical, and linin is merely a name for slender filaments 

 of chroma tin. Accordingly the chromatin simply draws together to 





G 



FIG. 12. MITOTIC CELL DIVISION IN THE ROOT TIP OF Tradescanliavirginiana. Xizs diam. 

 A, resting cell; B, C, D, prophase; E, metaphase; F, anaphase; G, H, I, telophase. 



form chromosomes, and the beaded appearance of the spireme thread is 

 due to alternate enlargements and constrictions of one substance. Others 

 consider that a different substance connects the granules of chromatin 



