IOO EXPLANATION OF FIGURES IN PLATES. 



PLATE V. PHYLLACTINIA CORYI.EA. 



FIG. 54. Primary nucleus of ascus, early metaphase. 



FIG. 55. Anaphase, eight chromosomes on each half of the spindle. Polar 

 aster strongly developed. 



FIG. 56. Late anaphase. 



FIG. 57- Diaster; chromosomes still attached to pole by spindle fibers. 



FIG. 58. Reconstruction of daughter nuclei; chromosomes elongating and 

 becoming irregular strands of chromatin. 



FIG. 59. Later stage; strands of chromatin forming irregular cone extending 

 from central body into antipolar region of nucleus. 



