' DISEASES OF THE HOG. 95 



others. This disease is often epizootic, affecting 

 nearly all the pigs in a neighborhood at or about 

 the same time. 



Symptoms. — The first symptom is that of dry- 

 ness with some swelling of the membrane, and irri- 

 tation which causes sneezing; this is generally fol- 

 lowed by copious discharge of a thin, acrid fluid, 

 which irritates the margin of the nose and the 

 membrane, increasing the inflammation. The nos- 

 trils are partially closed by the swelling, which 

 causes the animal to make a snufiiing sound; the 

 eyes become red and watery, either from sympathy 

 or by the continuous extension of the inflammation 

 up the lachry^mal passages. In the majority of 

 eases there are no constitutional symptoms; the 

 pulse remains natural and the appetite is unim- 

 paired. In some few cases there will be more or 

 less fever indicated by loss of appetite, hot, dry 

 skin and a somewhat excited pulse. The complaint 

 usually attains its height in three or four days, then 

 it begins to abate. The secretions from the nose 

 are thicker and less copious and sometimes assume 

 a yellowish color. If there has been any fever it 

 gradually subsides and recovery is usually com- 

 plete in from seven to ten days. If it should extend 

 to the throat and downwards it would constitute 

 laryngitis and bronchitis, which will be described 

 under their respective heads. 



Treatment: Most cases of this disease are so 

 mild that no medicine is needed. The pig should 

 be kept in a comfortable place at night and allowed 

 to run at large during the day, A warm mash at 



