322 WESTERN GRAZING GROUNDS AND FOREST RANGES 



The Heel Fly (Hyporderma Lineata). 



kill screw worms. Chloroform is often used, although 

 it is very severe in its action. An animal suffering from 

 screw worms can generally be identified by the little 

 trickle of pale watery-looking blood that discharges from 

 the wound. 



