PROGRESSIVE MOVEMENTS OF THE HORSE 737 



FlG. 65. Some Consecutive Phases of the Rack or Pace. 

 The stride is completed at 10, and 11 and 12 are reproductions of 2 and 3. 



Rack. A method of progressive motion by a quadruped in which 

 two lateral. feet are, with nearly synchronous movement, placed upon 

 and lifted from the ground, alternating with the other laterals, the 

 body of the animal being in the intervals entirely without support. 

 Sometimes called the PACE. 



With some animals the rack is a hereditary movement ; with 

 others it is acquired. A trained horse can make faster progress by 

 racking than by trotting. 



" The rack differs from the trot in the nearly synchronous action of the laterals instead of 

 the diagonals." E. M. 



Gallop. The most rapid method of progressive quadrupedal 

 motion (sometimes erroneously called the run), in which the animal 

 springs into the air from a fore foot and lands upon the diagonal hind 

 foot. 



If the notation of a stride by the horse during a gallop begins with 

 the landing of a hind foot upon the ground, as, for example, the left 

 hind foot, the right hind will next strike the ground and at a consider- 

 able distance forward ; then follow in succession the left fore foot and 

 the right fore foot, at a distance from each other sometimes equal to 

 the height of the animal. The consecutive foundations of support 

 (beginning the notation as above) are : (i) the left hind foot ; (2) 

 both hind feet ; (3) the right hind foot ; (4) the right hind and the 

 left fore feet ; (5) the left fore foot ; (6) both fore feet ; (7) the right 

 fore foot, from which the animal will spring into the air, in which 

 phase (the only one of the gallop when the animal is entirely off the 



3 A 



