Contagious Pleuro-Pneumonia of the Ox. 



467 



but the action is established immediately on the introduction of 

 the agent. 



Fig. 4. — Fluid exuded from a section of a swollen tail, near the 

 inoculated part, magnified 1300 diameters. 



Beyond the local irritation which follows the operation of 

 inoculation with the exudate from a diseased lung, no morbid 

 action has been observed. From the moment of introducing the 

 fluid to the completion of the healing process the animal, under 

 ordinary circumstances, remains in good health, the internal 



2 H 2 



