160 



A' a'. Discharge. Turns riglit fore-foot on outer 

 hearing. 



— a'^ Brings riglit fore-foot forvf arcl. 



A' a" discharges tlie left hind-foot in its bi-com- 

 posite connection, and — a'^ the left fore-foot in the 

 same. These discharges, of course, work on the 

 sternum, and are followed by the composite and 

 ojDhidian spines ; but, from the circumstance of 

 the altered position of the appuis of the alternate 

 anterior line, the collateral fore and hind-leg are 

 not much separated after leaving the ground. 



§ 146. One difficulty in describing all the gaits 

 lies in the difference between the action of the an- 

 terior hne when first throwing the body into posi- 

 tion, and its action when as "alternate anterior'* 

 it discharges the gathered three springs of the old 

 Hues. In imagining the real working of this line, 

 when the gait is fully inaugurated, we must bear 

 in mind that, then, the first office of the anterior 

 line is to discharge the old spring, after which it 

 forms the basis for a new one. 



It will be noticed that a marked distinction be- 

 tween the trot and the pace consists in the " alter- 

 nate neck winding line " A' a^ a" forming itself in 

 the trot, after the spring and landing, but in the 

 pace, before either. 



