in conséquence of the rapid degeneration of the cell. Only 

 in a single instance I hâve thought tliat I observed a cell 

 division following the division of the nucleus in the 

 upper cell. 



The lower of the above-mentioned two cells is the me- 

 gaspore. Having regard to the size of the pseudo-embryo-sac, 

 it is remarkable, that the real embryo-sac increases but 

 little in size, and always remains situated in that upper 

 part of the nucellus, which projects beyond the inner 

 integument; it remains of course surrounded by the layer 

 of epidermal cells, vi^hich later are only compressed and 

 flattened more and more, so that they become difticultly 

 visible (fig. 10, 11). 



The nucleus of the megaspore soon divides again. Only 

 a single division was observed, and then the fixation did 

 not allow many détails to be made out; it can hardly be 

 doubted, however, that this must be a homoiotypic di- 

 vision of the nucleus. The axis of this spindle is longitu- 

 dinal with respect to the ovule and therefore also with respect 

 to the embryo-sac. The lower of the two nuclei which are 

 formed, is seen to degenerate in the anaphases of the 

 division, by a strong dumping of the chromatin masses, 

 so that the latter corne to lie at the base of the embryo-sac 

 as a structureless chromatin-like clump, which stains 

 deeply (fig. 5). This is evidently ail, that can hère be 

 seen of the antipodal apparatus and of the lower polar 

 nucleus. I shall call this nucleus the antipodal nucleus 

 of the embryo-sac. 



In contra-distinction to the last-named, the other nucleus 

 assumes a normal shape and is prominent on account of 

 its size. Soon afterwards there follows another division, 

 of which 1 hâve been able to see the varions stages. 

 The axis of the spindle is this time also longitudinal to 

 the embryo-sac and ovule. This division is not at first 



