ACQUIRED AND ABNORMAL CHARACTERS. 65 



Now, the young of these animals that had recov- 

 ered from their injuries are born with a nervous sys- 

 tem that is apparently perfect ; and yet, after a time, 

 the disease is developed, passes through its peculiar 

 stages without apparent cause, and finally disappears. 



The functional derangement of the organization is 

 apparently transmitted without being accompanied by 

 any anatomical lesions that can be assigned as an ex- 

 citing cause. 



