CHAPTER XII 



The Ciliates 



Classification, General Characteristics. Balantidium 

 coll. Prevalence. Transmission. Morphology. Habi- 

 tatat and Effects. Balantidial Dysentery. Chronic 

 Balantidiosis. Treatment. Balantidium minutum. Nyc- 

 totherus baba. 



class: ciliata. 



order: heterotrichida. 

 genus: balantidium. 



species: B. coli. 



B. minutum. 



GENUS : NYCTOTHERUS. 



species: A^. baba. 



THE CILIATES (CILIATA) 



Of the class of Protozoa known as the Ciliata, com- 

 monly called the Infusoria, there are two genera 

 with representatives in man's alimentary tract : Bal- 

 antidium, represented by B. coli and B. minutum, 

 and Nyctotherus, represented by N. baba. There 

 are other species described but not well accepted. 



The Ciliata are characterized by rather large size, 

 complete surface covering of short filamentous or 



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