Worms, 383 



extensively in the flock, for these species of parasites rarely 

 appear alone. 



Treatment. — The prevention of worms is best secured y 

 allowing a liberal quantity of salt, and by giving, once a 

 fortnight, a saline tonic, and bitter lick to the flock, as, for 

 instance — 



No. 427. Common salt, 2 lbs. 



Sulphate of magnesia, 1 lb. 

 Sulphate of iron, 



Powdered gentian, each ^ lb. 



Mix "with ground fodder, for 75 to 100 sheep. 



Ordinary wood soot, as it can be collected from the chim- 

 ney, is a very efficient vermifuge, often used, both in children 

 and the lower animals. It may be mixed with salt, or 

 sprinkled on the fodder. Another cheap and useful vermi- 

 fuge, in the form of a drink, is — 



No. 428. Quick lime, ^ 1 lb. 



Sulphate of iron, 5 oz. 



Mix wfth five gallons of water, and give a pint twice a week. 



As a vermifuge in round and thread-worms, the shepherd 

 may use — 



No. 429. Linseed oil, 2 oz. 



Oil of turpentine, ^ oz. 



For a drench. 



For the tapeworm, the following : — 



No. 430. Powdered areca nut, i to 1 drachm. 



Oil of male fern, 10 to 20 drops. 



Give in molasses and water, and follow next day with a purge. This 

 is also very effective in the dog. 



THE SCAB— THE MANGE, OR ITCH, IN SHEEP. 



Definition. — ^A highly contagious disease of the skin, 

 caused by the presence of a parasite in or upon the skin. 



Causes. — Tliere are three different forms of parasites 

 which produce the scab, the most common one in this 



