234 



section, which is not figured, a third cell 

 was visible (22'^^ August). 

 Fig. 3. X 240. Top of an ovule as in fig. 2. In the top 

 of the embryosac a young embryo is visible 

 with 6 nuclei; 2 other nuclei in the next 

 section which is not figured (22ûd August). 



„ 4. X 240. The same as in fig. 2. In the top of the 

 embryosac a small group ofcells is visible, 

 perhaps representing an embryo. The cell- 

 walls are somewhat swollen, the cell 

 contents disorganising, the nucleus only 

 being visible in some of them (lO^h Sep- 

 tember). 



„ 5. X 240. Almost the same as in fig. 4, only the 

 number of cells in the top of the embryo- 

 sac is greater and the disorganisation has 

 gone further (22°<i August). 



„ 6. X 20. Ovule with an embryosac, of which the 

 upper part is almost filled up with endos- 

 perm (15*^ August). 



„ 7. X 20. Ovule with an embryosac, filled with en- 

 dosperm. The nucellus forms only a thin 

 layer (15'^ December). 



„ 8. X 24. Ovule with a much enlarged umbryosac 

 with a peripheral layer of endosperm. The 

 nucellus has almost disappeared (19^^ Sep- 

 tember). 



„ 9. X 24. Ovule with ripe endosperm with thickened 

 cellwalls (15*-^ December). 



,, 10, 11, 12. 13. X 920. Fragmentation of nuclei in the 

 endospermcells figured in fig. 8. 



