Fig. 5. A stage slightly in advance of Fig. 4. Young archegonia are 

 organized at the apex of the endosperm, x 96. 



\ 



f 



Fig. 6. An archegonium before the cutting off of the ventral canal 

 cell. The cytoplasm is vacuolated. The nucleus is in the 

 spirem stage. Immediately above the nucleus are the 

 two tiers of neck cells, these latter being at the bottom of 

 the funnel-shaped tube, x 96. 



