94 



THE PLANT CELL. 





i^i"". » Dora 



Fig. 73. — 1. The end of 

 A Filament of Vau- 

 cheria, stained so as to 

 show the nuclei and 

 represented as seen in 

 optical section. Note 

 the peripheral cyto- 

 plasm, in which lie 

 numerous chloroplasts 

 and the nuclei (shown 

 black in the figure). 

 The larger round bo- 

 dies are oil- globules 

 which float in the cell- 

 sap in the central 

 cavity. 



2. Plasmolysis in 

 Vaucheria. 



3. Formation of a 

 SWAEMSPORE (see text). 



4. FbEKINQ of THE 



SWARMSPORE by split- 

 ting of the apex of the 

 terminal cell- wall. 



