Symptoms. Course. 



167 



In these instances the umbilicus manifests no inflammatory 

 changes. 



Animals which recover from the acute inflammation may 

 later become affected with a chronic form of the disease. This 

 form may develop exceptionally even at the onset, with latent 

 symptoms. The animals fail to take proper nourishment, and 

 therefore they do not develop well; they gradually become 

 emaciated, and toward the termination a rise in the body tem- 

 perature and diarrhea appear. Some of the joints become 

 swollen, painful, and hinder the patient in its movements 



Kg. 34. Chronic pyo-septicemia of a colt. Swelling of the right carpal and left 



tarsal joints. 



(Fig. 34). In the meantime, symptoms of a lung affection are 

 manifested. The animals cough, there is a muco-purulent dis- 

 charge from the nose, over the lungs numerous rales may ,be 

 heard.. Finally the animals die after several weeks, from 

 exhaustion. 



Course. The very acute septicemic cases result in death 

 in from two to three days. In some less acute eases the disease 

 may remain confined to the umbilicus until the termination of 



