DR. LEGEAR'S STOCK BOOK. 301 



Treatment. The only thing to be done is to keep the cattle in 

 dark stables during the day or apply some greasy or oily sub- 

 stance to the skin. Crude cottonseed oil 1 gallon, and crude car- 

 bolic acid 4 ounces, thoroughly mixed and painted on the cows 

 with a large brush,, will keep off the flies for four or five days at 

 a time. The female fly lays its eggs in the droppings of cattle, 

 which soon hatch out and form a new generation of flies. These 

 droppings by being burned when a little dry will destroy the 

 eggs. 



SCREW-WORMS. 



The maggots from the screw-worm fly (Lucillia macellaria) are 

 the greatest curse to stock, and cause the stockmen of Texas more 

 trouble than any other thing. The flies deposit their eggs on 

 sores on stock, and these eggs hatch out in a remarkably short 

 time; and then the maggots grow very rapidly, and in two or 

 three days there are dozens, or perhaps hundreds, of good-sized 

 screw- worms burrowing and boring into the healthy flesh; and 

 unless killed, they will in many cases kill the animal. Dogs and 

 pigs will drown them out if they can get to water, but they have 

 to be killed by the use of medicine as a general thing on horses, 

 cattle and sheep. The best and safest remedy we know for kill- 

 ing screw-worms is chloroform 1 part and alcohol 2 parts, to be 

 injected into the sore. After killing them out, dust the sore 

 with Dr. LeGear's Screw Worm Powder, which is a fine healing 

 preparation and keeps out the screw-worms. 



THE STIFF DISEASE. 



This is a fragilitis (brittle) conditon of bone, and is variously 

 known as "the stiffness," "the cripple," etc. It appears to be 

 more or less dependent upon a peculiarity of soil, being common 

 to that of a porous or sandy nature, and more or less sterile. 



