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der the jaw-bone, which are always fwelled in 

 this diftemper, do not difcharge their lymph in- 

 to the mouth, as in man, but into the nof- 

 tril j and that he conflantly found their obftruc- 

 tion agreed with the difcharge -, if one gland 

 only was affedied, then the horfe difcharged 

 from one nollril only, but if both were, then 

 the difcharge was from both. 



He fornetimes, though rarely, found the 

 bony partition of the nofe carious and rotten ; 

 but that the fpongy bones about this part mufl 

 fuffer from the acrimony of matter long pent 

 up, is not at all to be doubted, though the 

 more folid ones may efcape. 



The feat of this diforder thus difcovered, our 

 author with great ingenuity has paved the way for 

 the cure, by trepanning thefe cavities, and taking 

 out a piece of bone, by which means the parts 

 affeded maybe wafhed, with a proper inje6lion, 

 and, in fine, the ulcers deterged, healed, and dried 

 up. 



This operation he has performed on three 

 horfes, one of whom difcharged from one nof- 

 tril only, and the third from both. The two 

 firft he trepanned on that fide of the head which 

 was affeded j and to the other he performed it 

 on both : and found that the wound and per- 

 foratioii filled up v/ith good flefh in twenty-fix 

 days, and that the horfes fufrered no inconve- 

 nience from the operation. Though after this 

 experiment they v/ere knocked on the head. 



The 



