PARASITISM AMONG PROTOZOA 



109 



protozoology and a biological phenomenon to which many proto- 

 zoologists give their exclusive attention. Another, and a more 



Fig. 63— AN INTESTINAL PARASITE OF 

 THE RABBIT 



T'.ie fertilized egg of Eimeria stiedae in its 

 sporocyst 



From a photomicrograph by the author 

 Magnification, 650 



fundamental series of biological phenomena upon which light is 

 thrown by the study of protozoa, is outlined in the following 

 chapter. 



