[ I03 ] 



Objection IIL 



It Is faid that I never open the heel, and that 

 that is the caufe of diforders. 



Answer. There are three forts of diforders, the 

 firfl comes from a ftrain ; to which I have anfwer- 

 ed, the fecond from not opening the heel well ; 

 but when ever I fee them difpofed that way, I 

 pare them, leaving the frog in its full llrength -, 

 and the third fort proceeds from the natural ftruc- 

 ture of the foot -, and in this cafe whether the foot 

 be pared or not, they will equally come on. 



Objection IV. 



They fay that the frog ought to be fatigued, 

 becaufe the horfe goes upon it. 



Answer. I could rigoroufly appeal for this 

 to experience : no horfe Ihod in this new me- 

 thod has to this day fhewed the lead fign of 

 the fatigue of the frog, or of its fenfibility; 

 and I even do not believe that any one can fay 

 he ever faw horfcs lamed, having old fhoes 

 on, for having travelled upon the frog -, and 

 it will be feen that it is fcarce pofTible, when 

 we refledt upon the whole particular flrudture 

 of this part as I have given it in this work. It 

 is a foft, fpongy, flexible fubftance, which by 

 its natural elaflicity yields to the weight of the 



G 4 body 



