176 DISEASES OF THE HOESB. 



their way into leaden troughs, cause oxidation of the leaxJ, 

 forming sugar of lead — a bad poison. Not long since, 

 heavy damages were awarded a farmer who had lost several 

 head of cows from lead poisoning, occasioned by the spray 

 of leaden bullets shot against a stone wall by a rifle, or 

 military company — the fringes of lead spread upon the 

 grass, being converted into the sugar, or oxide of that metal, 

 and the cows gathering 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 his owner, large quantities of 

 poisonous materials are necessary to destroy the life of the 

 horse. 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 animals, has 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 description 

 being given. It consists in suppurative inflanmiation 

 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 little 

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

 U> burrow down among the bones of the neck, and cause 

 disease in them. Make the opening large and deep enough. 



