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section. Where a stalk cell is first cut off, this is followed by three 
nearly vertical intersecting walls in the terminal cell. The central 
cell in this case is truncate below (fig. 2, B) instead of pointed. In 
either case the next division is usually at least a transverse wall in 
the central cell, cutting off a cap-cell (fig. 2, B, c), which finally is 
divided into four by intersecting vertical walls. 
The subsequent divisions in the archegonium follow the usual 
course; i. e., a series of transverse divisions, in all but the cap-cell, 
Fig. 3. A. Young archegonium, showing the separation of the central cell 
and the primary neck-canal cell, X 550. B. An older archegonium with seven neck- 
canal cells, and ventral canal-cell, v. C. The venter of a nearly mature arche- 
gonium. 0, egg; V, ventral canal-cell, X 550. D. Two cross sections of the arche- 
gonium. Neck, X 550. E. Adult archegonium, X about 100. 
