PARASITIC SKIN DISEASES. 



MANGE 



Is caused by a minute acarus, peculiar to cattle, which 

 burrows itself in the skin. It usually first appears on the 



Fig. 125. The mite or acarus known as Dermatodectes bovis. Magnified. 



withers and the root of the tail, whence it spreads. The* 

 parasite may sometimes be seen in the removed scurf with 



