XVI INTRODUCTION. 



must often follow that of the other in 

 a manner that precludes the substitu- 

 tion of a single bit. 



The snaffle should be buckled to the 

 under check-pieces of the bridle, so 

 that it will lie up in the corners of the 

 mouth without pressure. 



The mouth-piece of the curb should 

 be of proper width. It is to rest upon 

 the bars of the mouth ; for which 

 reason the port should be of a size to 

 hold the tongue, but it must not he 

 high enough to torture the horse. The 

 other dimensions of this bit are 

 determined according to laws of 

 mechanics. The cheek-pieces will be 

 of such a length as to permit the loosety 

 fastened curb- chain falling into the 

 groove of the chin ; the branches will 



