INFECTIOUS DISEASES 



181 



stand with back arched and head hanging, or they may 

 crawl under the bedding. The appetite is at first im- 

 paired, later the animals refuse all food. In the early 

 stages vomiting may be observed. There is usually con- 

 stipation in the beginning, but this is succeeded by 



Fig:. 13. HEARTS. 



A. Showing acute inflammation of the auricle and hyperemic areas 

 in the ventrical, a common condition in hog cholera. B. normal. 



diarrhea, the intestinal discharges being admixed with 

 blood. There is usually a purulent conjunctivitis; the 

 discharges accumulate on the eyelashes and frequently 

 cause adhesion of the eyelids. There may be a limited 

 mucopurulent discharge from the nose. On the second 

 or third day erythema of the skin usually becomes evi- 



