Record of the Tracks on the Ground 



43 



(cross-firing) of hind foot C with fore foot B on the opposite side, as 

 seen in the case of the pacer, Fig. 26. 



In the square trot as well as pace we often find a tolerably small 

 difference of extension between fore and hind feet. The shifting from 

 one foot to the other may now and then alternate, but if this difference 



A * 



n 



ft' 



Ft 0.32. 



n 



\ 



a 



n 



Fio33 



is small it becomes negligible in our investigations. We cannot pos- 

 sibly insist on an absolutely pure and regular gait and must at all times 

 allow for the condition of ground and the great effort for speed ; so 

 that, when such a difference is only an inch or two, it need not alarm 

 us, but when it becomes a foot or more there must be something wrong, 

 as in a rough and irregular gait. 



