THEORY OF THE SEAT. 



153 



formed by our legs. Hence, when riding, we cannot 

 continue to sit absolutely " square " (having our 

 shoulders at right angles to the direction of our mount) 

 without keeping our body in a stiff position, which in a 

 short time will be productive of discomfort and fatigue. 



Fig. 81. Seat at the walk. 



Although the maintenance of a twisted position of the 

 body to the right is incompatible with ease, no discom- 

 fort will arise from looking more or less straight to the 

 front, because the muscles which regulate the direction 

 of the neck and eyes are gifted with great mobility, 

 and their respective periods of contraction and relax- 



