FUSION MASSES OF WHOLE STENTORS 219 



resembling an " archenteron ", with an '' appendix " and a tube 

 connecting to the exterior (Fig. 620). Ahhough fusion masses of 

 stentors become increasingly unable to reconstitute the normal 

 form, they seem for this very reason to be set free to express 

 unusual types of cytoplasmic differentiation. 



