4 THE BIOLOGY OF STENTOR 



one of the classical types in biology. These leads can more intel- 

 ligently be pursued in all their modern implications, if one has a 

 thorough background in the biology of Stentor. For this we can 

 draw on all the many studies of stentors extending far back into 

 the previous century as well as our own good observations. In 

 what follows we shall therefore try to summarize all that is known 

 about the ciliate protozoan, Stentor. Many of these details may 

 seem tedious unless one keeps in mind the marvel that so much 

 can be learned through the patient efforts of a long procession of 

 able students about a single type of minute organism, and the 

 wonder that so tiny and seemingly insignificant an animal reveals 

 on close inspection so much integrated complexity of form and 

 function. a 



