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upon all the parts and Limbs of his pupil's Body? 

 in vain will he endeavour to remedy all rhe defecfls ^nd 

 faults which are found in the polture of almofi: ev'v 

 ry fcholar in the beginning, unlefs he is intimately ac- 

 quainted with the clofe dependance and connexion 

 there is between the motions of one part of the body 

 "W'ith the reft; a correfpondence caufed by the reci- 

 procal CitYion of the mufcles, which govern and dire6l 

 them : unlefs, therefore, he is mafter of this fecret, and 

 has his clue to the labyrinth, he will never attain the 

 end he propofes; particularly in his firft lefTons, upon 

 which the fuccefs of the reft always depend. Thefe 

 principles being eftablillied we may reafon in confe- 

 quence of them with clearnefs. 



In horfemanfliip, the Body of man is divided into 

 three parts ; two of which are moveable, the third 

 immoveable. 



The firft of the tw^o moveable parts is the Trunk 

 or Bod^, down to the Waift; the fecond is from the 

 Knees to the Feet ; fo that the immoveable part is 

 between the waift and the knees. The parts then 

 which ought to be v/ithout motion are the Fork, or 

 Twiftof the horfeman, and his thighs; now that thefe 

 parts ftiould be kept wdthout motion, they ought to 

 have a certain hold and center to reft upon, which 

 no motion that the horfe can make can difturb or loof- 

 ten; this poin: or center is the bafis of the hold 

 which the horfeman has upon his horfe, and is what 

 is called the Seat.; now if the feat is nothing elfebut 

 this point or center, it mull follow, that not only the 

 true grace, but the fymmctry and true proportion of 

 the whole attitude depend upon thofe parts of the 

 body that are immoveable . - 



Ut 



