NON-PARASITIC DISEASES OF THE SKIN. 129 



6. Ring-worm. 



This affection is very rare in sheep. The 

 disease usually makes its appearance on the neck 

 and back, forming a hard crust over the part in- 

 fected. 



Scrubbing the hard scabs until they are soft- 

 ened, and applying tincture of iodin to the raw 

 surface usually results in a speedy recovery. 



