190 



THE PARASITISM OF 



which may be noted between the accounts given by different 

 observers. I have drawn attention to these facts to show hor' 

 readily this important external cycle of development may b 

 influenced. 



w 

 e 



Development within the Body. 



When an uninfected young rabbit swallows the parasite in the 

 larval or resting condition just described with its food, the resist- 

 ing capsules are acted on by the digestive ferments, so that the 

 crescentic germs already mentioned become free. A new cycle of 

 intense activity is now observed. These crescents become round- 

 ed, and probably acquire the power of locomotion. Most of the 

 naked amoeboid forms of the organism divide into numerous 

 small crescentic sporules, which, in their turn, also become free, 

 and it seems probable that this " endogenous sporulation " may 



Fig. 48. — Adenoma from Rabbit's liver, caused by the C. Oviforme ; 

 shows the arrangement of the growth, the condition of the epithe- 

 lium, and numerous parasites enclosed in the cells, and lying free 

 in spaces between the processes. (From a photograph magnified 

 about 100.) 



