POLL EVIL. 147 



a stone wall by a rifle, or military company. The frin- 

 ges of lead spread upon the grass, was left to be con- 

 verted into the sugar, or oxide of that metal, and the 

 cows gathered it with the pasture. 



Treatment. — Give large doses of white of eggs, and 

 linseed oil, in either lead or copper poisoning, to shield 

 the coats of the stomach and bowels, and to remove it 

 from the body altogether. Happily for the horse and 

 his owner, large quantities of poisonous materials are 

 necessary to destroy life, and materials which will destroy 

 man, dog, and the pig, will not in many instances have 

 any effect on the horse, sheep, and cattle. Antimony, an 

 active and deadly poison, when given to omnivorous ani- 

 mals, have no more effect in a poisonous point of view 

 than the same quantity of earth, when given to herbivorous 

 animals. Hence, tartar emetic is now no longer used as 

 a nauseant in the treatment of horses and cattle, when 

 laboring under lung diseases, however useful it is in the 

 same diseases in man and the dog. 



Poll Evil.— This affection of the back part of the 

 head is well known to horsemen, without much of a de- 

 scription being given. It consists in supurative inflam- 

 mation forming pus in the form of a simple abscess, or 

 in the form of fistula, (which see.) 



Cause. — Injury to the part, or disease of the bone. 



Treatment. — As soon as the swelling has become a lit- 

 tle soft, have it opened without delay, before the pus has 

 time to burrow down among the bones of the neck, and 

 cause disease in them. Make the opening large and 

 deep enough, so as to admit three fingers^ so that the ab- 

 scess can be swabbed out with a piece of sponge or cloth 

 tied on the end of a stick, to remove the pus. This 



