96 



THE PLANT CELL. 



Fig. 74- — 1. A SINGLE Frek-swijmming Individual of Sphcerella (see text). 



2. The same treated with Alcohol and Iodine Solution. 



3. The Palmblla Stage, where two individuals have been formed 

 by division, the whole being surrounded by a gelatinous capsule. 



4. The First Stage in the Reproduction of Sphcerdla by con- 

 jugation. 



5. Fusion op two or the resulting Swarmsporbs by their anterior 

 ends. 



