BRONCHITIS. 



83 



its secretions clog the tubes, choking the horse to death, 

 or when it is complicated with other diseases. The latter 

 is unfortunately frequently the case, for it is often com- 

 plicated with catarrh, sore throat, and diseases of the 

 lungs. In fact, the causes of catarrh are the causes of 

 bronchitis. Bronchitis is simply catarrh of the bronchial 

 tubes. 



The disease rarely exists independently. It is acute, 

 subacute, and sometimes chronic. In the spring and fall 

 it is sometimes epizootic, especially among young horses. 

 When acute and favorable, it reaches its hight about the 

 fourth or fifth day; begins to decline about the sixth or 

 seventh day, leaving the patient out of danger about the 

 tenth or twelfth. If not favorable, the signs on the fifth, 

 seventh, or ninth day are : Eespiration becoming very 

 oppressed; pulse quicker and fainter; skin and extremi- 

 ties cold ; mouth cold and clammy ; nostrils very dry. 

 Pulmonic or pleuro-pulmonic disease may now supervene. 



Fbs^ 



Fig. 18. A horse dressed for Bronchitis. 



Symptoms. — Breath hot; unusual nasal discharge; 

 reddening of nasal membrane ; cough ; sore throat ; dif- 

 ficult breathing ; febrile irritation, sometimes without an- 



