ROARING. 151 



must sooner or later be blighted, as well as put the 

 poor horse to unnecessary torture. 



That roaring is quite uncurable there can be no 

 doubt, notwithstanding the many instances in which 

 various modes of treatment are said to have been suc- 

 cessful. 



And when I make this assertion, I allude merely to 

 chronic, and not to acute cases of roaring. Acute cases 

 are frequently the consequences of swelling in strangles, 

 and, causing an obstruction, make the horse roar lustily. 

 These causes can undoubtedly be cured by proper 

 treatment, such as giving emetic tartar in doses of two 

 drachms daily, for a week, and applying repeated 

 blisters composed of iodine and mercury to the larynx. 



Roaring is hereditary, in my opinion, in nine cases 

 out of ten, and in predisposed constitutions (or consti- 

 tutions which have a tendency to irritation of the bron- 

 chial tubes) will show itself sooner or later. 



The only mode of warding off this disease is by 

 keeping such animals as are predisposed to its ravages 

 in good condition and regular work all the year round, 

 carefully avoiding all exciting causes of inflammatory 

 attacks, both in and out of the stable, which should be 

 cool, airy, and well drained. 



