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 body the inftant the horfe prefTes his foot againft 

 the pavement, and immediately recovers again. 

 There is, however, a cafe wherein a horfe 

 may become lame, by going upon the frog ; 

 but which never was objected to me -, which is 

 when it is hard and dry. The obfervation and 

 anatomy of the foot have fhewed me that it may 

 caufe lamenefs, becaufe the horfe in bearing 

 upon the ground forces this hard part againft 

 the expanfion of the tendon which is attached 

 to the foot bone, and the horfe may become 

 lame from the great fenfibility of this part : but 

 if I take off the little end of the frog with the 

 buttrefs, he ought not to be lame. 



Objection V. 



It is faid the frog will be more fubject to 

 have fpongy excrefcences. 



Answer. That happens only to fuch horfes 

 as are full of humours -, and if there appears any 

 difpofition towards it, the frog may be pared, 

 and the horfe will go upon his heels, if they 

 be ftrong, as fafely, upon a fmooth pave- 

 ment. 



Objection VI. 



They fay the nerve is wearied, that is, that 

 the Tendo Achillis is ftretched or dragged ; 

 and fuffers by this mort fhoeing, becaufe the 

 frog bears upon the ground. 



Answer. It is juft the very contrary. 



Let 



