PLATE 2 



EXPLANATION OF FIGURES 



7 Paramoecium with five vacuoles. 



8 Paramoecium with five vacuoles two being located in the anterior end. 



9 Paramoecium with five vacuoles, two of which are slightly displaced to the 

 right. This displacement is rare. 



10 Paramoecium with six vacuoles. 



11 Paramoecium dividing. Before constriction occurred this was a three- 

 vacuoled animal. A new vacuole has been added to each half. 



12 Paramoecium with seven vacuoles. 



330 



