PATHOLOGY. H9 



On Roaring. 



THIS is a disease not noticed by any writer 

 we have seen, and takes its name from the noise 

 the horse makes in breathing, when put into a 

 brisk motion. This noise is owing to lymph being 

 extravasated, and coagulating on the inside of the 

 trachea, or windpipe, and by that means obstruct- 

 ing respiration. 



The principal cause is sudden, or long conti- 

 nued violent exercise. 



In its incipient stage, blistering the whole 

 length of the wind-pipe may be of use ; but when 

 the disease has continued a length of time, it be - 

 comes incurable. 



Broken Knees. 



AMONGST the number of accidents to which 

 the horse is liable, there is none more frequent 

 than those which come under the denomination of 

 Broken Knees, which very frequently leaves a 

 blemish that is never effaced. This is often owing 

 to an error of treatment. 



When the horse unfortunately meets with this 



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