138 DISEASES OF THE HORSE. 



the symptoms were anything but like each other. Iii on« 

 animal, the propensity to bite at objects was more severe; 

 and in another, the horse would walk and look about him, 

 utter a peculiar sound, and lie down and get hold of the 

 heels and part of the arm of the fore leg with his teeth, till 

 he had them bleeding, get up again, and walk about 

 without any apparent object in view. But the destructive 

 impulse attributed by some authors, I think, is merely the 

 fancy of an inexperienced mind in such matters. The 

 symptoms of the mule differed from each of the horses, 

 inasmuch as he would, at times, eat hay very ravenously, 

 stop all at once, and with a pecuKar sound, not like the 

 bark of a dog, but of a character which cannot be 

 described, lie down and have a good roll to himself; 

 then he would run at any person within his reach with 

 open mouth. But in no instance did any of the cases 

 attempt to bite at anything not endowed with animal life. 

 All of these animals were confined in enclosures from which 

 they could not escape. They lived about thirty-six hours 

 after the active symptoms of the disease set in. (See Bites 

 of Mad Dog.) Any person having the least experience 

 Math horses, may observe peculiarities, at times, which do 

 appear not to belong to common diseases. 



Hypertropliy. — -This name means a state of certain 

 organs iucreased in size, and decreased in power. The 

 heart, kidneys, spleen, liver, and other parts of the body, 

 are liable to this disease. 



Hypodermic. — Under the skin. (See Endermic.) 



Hysteria. — This is a disease which is sometimes seen 

 in mares only. 



Causes. Irritation of the uterus, or of some of its nerves. 

 Symptoms. Great excitement and incapability of standing, 



