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 a thick offensive purulent discharge issues from one 

 of the nostrils. That discharge is not continuous ; 

 sometimes it will cease for days, and the proprietor 

 congratulates himself that the horse is getting well ; 

 the fetor, however, remains, and after a time it breaks 

 forth again with redoubled vigour. The animal be- 

 comes daily worse, and would linger on, but the 

 patience of the owner is exhausted ; the knacker is 

 employed to cut short the hopeless trouble and ex- 

 pense, and then a hasty examination is made for the 

 cause of all this mischief. Such is a condensed des- 

 cription of the customary incidents, in the order in 

 which they ensue ; but of course the intelligent reader 

 is aware that the symptoms of disease cannot be map- 

 ped down, as though they were results obtained from 

 inorganic matter. Such symptoms always more or 

 less vary, though upon the whole they present suf- 

 ficient similarity to enable them, in every case, to be 

 interpreted ; and hence the value of practical expe- 

 rience, which enables the party possessing it to recog- 

 nise a fact, when not fully declared. The writer 

 cannot, to the like extent, communicate instruction ; 

 he must condense his remarks, and be content to 

 speak a general truth ; for if he descends to particulars 



