DISEASES OF THE SKIN 83 



In moist eczema small red spots appear first, and are 

 followed by vesicles or blisters. In a short time these 

 change to pustules. All stages of the inflammation 

 may be seen. When the pustules dry up, crusts are 

 formed. In hog cholera the affected parts of the 

 skin finally become dry and hard, separate from the 



FIG. 8 — A SKIN DISEASE CAUSED BY MUCK DIRT 



healthy skin, and slough off. In case the inflamma- 

 tion is caused by severe irritajtion, cracks form in the 

 skin on the back, ears, and other parts of the body, 

 and may form large sores. 



The pain and irritation usually cause the hog to act 

 restless. In some cases the appetite is poor, and the 

 hog acts dull and feverish. 



