1O2 EXPLANATION OF FIGURES IN PLATES. 



PLATE VI. PHYLLACTINIA CORYLEA. 



FIG. 60. Chromatin strands more irregular and passing over into apparent 

 reticulum by formation of anastomoses. 



FIG. 61. Still later, chromatin still more irregular and practically in the resting 

 condition. 



FIG. 62. Transverse section of ascus ; nucleus in spirem of second division. 



FIG. 63 a, b. Later prophase of second division ; chromosomes appearing in two 

 sections. 



FIG. 64. 'Still later prophase, second division. 



FIG. 65. Equatorial-plate stage; second division; one spindle lying in plane of 

 section, the other cut through obliquely ; eight chromosomes. 



FIG. 66. Late anaphase stages, second division; eight chromosomes on each 

 half of each spindle. 



FIG. 67 a. Equatorial-plate stages, third division; nuclei in end of ascus; one 

 polar and one side view of the spindle figures. 



FIG. 67 b. Larger nuclear figure from same ascus, which will form functional 

 nuclei ; nuclear membrane still intact. 



FIG. 68. Anaphase stages of third division ; eight chromosomes on each spindle- 

 half. 



