GEO. S. BRYAN 
An interesting situation is illustrated in figures 24-26. When the 
dissections were first begun, a large percentage of the young sporophytes 
were found to be disintegrating. This disintegration, in all the cases 
observed, begins with the apical cell and works downward. The cause 
Fig. 24. Embryo of 5 cells. Apical cell has degenerated. Fig. 25. Older stage, 
apical cell degenerating.. Fig. 26. Embryo of 7 primary segments, the two uppermost 
having degenerated. All X 300. 
