246 THE COMPLETE FARMER 



the horse sometimes assume is sympathetic, and is always 

 preceded by some local affection. It is a disease of irrita- 

 tion. 



The eyes of the horse are subject to a species of cataract, 

 that affects no other animal. It arises from a constitutional 

 disease, brought on by bad stabling. It is never produced 

 by local injury. This species of cataract commences with 

 an inflammation of the conjunctiva, without any apparent 

 cause. Local applications have no effect in removing it. 

 The only rational method of treating it is to remove, if possi- 

 ble, the constitutional disease, and improve the health and 

 condition of the animal. 



Oxen and cows have the disease called bots in their skin, 

 but in the horse this disease (if it may be so called) is con- 

 fined to the stomach. 



Farcy and glanders, I believe, are diseases peculiar to the 

 horse. I know of no other animal subject to them. They 

 are contagious diseases, but may be produced without con- 

 tagion, by bad stabling. The poisonous matter of farcy will 

 produce glanders, and vice versa. Farcy is now ascertained 

 to be a disease of the superficial absorbents ; whereas in all 

 the old books on the veterinary art it is represented as a 

 disease of the veins. 



A horse glandered has the whole mass of blood contami- 

 nated. This may be considered by medical gentlemen as an 

 important fact, as it goes to prove the doctrine of humoral 

 pathology. That the whole mass of blood is diseased, in a 

 horse affected with glanders, has been proved by the follow- 

 ing experiment, made by Mr. Colman, professor at the Vete- 

 rinary Institution, England. 



He took a young, healthy ass, an animal, as he states, 

 peculiarly susceptible of the disease, and introduced a pipe 

 having a stop- cock into the jugular vein, united by means 

 of an ureter to another pipe, which he introduced into the 

 carotid artery of a glandered horse. He then bled the ass 

 to death by opening his carotid artery, and turning the stop- 

 cock, admitted the blood of the horse into his vessels, and 

 resuscitated him. The result was, that the ass became 

 violently glandered He inoculated other asses from the 

 matter produced in him, and was able to carry on the same 

 disease. 



Corns in the feet of horses are very unlike corns on the 

 feet of the human subject. There is nothing which grows 

 in the feet of horses that constitutes corns. There is no in- 



