168 NAVIN ON THE HORSE. 



acute attacks of the same disease periodically. In the majority 

 of cases, again, its action is usually confined to a hind-leg, and 

 that on the left side. Sometimes both limbs are affected, but 

 never, that I have seen, very acutely at the same time ; and 

 the left limb might be attacked, and some time afterward the 

 right one, but never both limbs simultaneously." 



He regards as predisposing causes coarse and peculiar food, 

 too nutritious and too great quantities of such food, previous 

 attacks, old age, and changing from a poor to a rich diet. The 

 immediate or exciting causes are, heavy blows on the limb, 

 severe scratches and cuts, sudden overexertion, working the 

 horse in water or wet ground, the sudden checking of accus- 

 tomed discharges, as grease, thrush, etc., and the sudden check- 

 ing of perspiration. 



Treatment. — If the case is very bad, it will be well to bleed 

 six or eight quarts at the commencement. But this is not 

 generally required. Then give the following: 



Take— Sulphur 2 ounces. 



Saltpeter 2 ounces. 



Black antimony 2 ounces. 



Mix, and give one table-spoonful of the powder three times a day, ia a 

 drench. 



It would do well to begin the treatment with a cooling physic. 

 A solution of tincture of arnica may be often applied to the 

 affected part. The limb should be wrapped and the bandage 

 kept wet with the solution, 



BIG-HEAD. 



This remarkable disease is characterized by a hard swelling 

 on the horse's face, on a direct line from the eye to the nos- 

 tril. This disease seems not to be known in Europe, nor in 

 the Eastern States to any considerable extent. It has com- 

 mitted great havoc, at different times, in some parts of the 



