193 



IMMUNITY. 



nized or adapted to hen's egg-albumen. The rabbit's serum 

 will then precipitate hen's egg-albumen, but no other form 

 of albumin. It may, however, imperfectly precipitate al- 

 bumen from the egg of a species closely allied to the hen r 

 It has not been shown that this property plays any important 

 part in bacteriology, though that is not improbable. 



