horse's nature. It is then dangerous to the rider, because the horse, pulled backward by the bridle, may rear and fall.
However, the trot backward cannot properly be considered a gait of the horse. It is serviceable only for perfecting the equilibrium, and for suppling the entire hind hand, most especially the coupling.
THE GALLOP ON THREE LEGS
IN the gallop on three legs, the horse uses both hind limbs; but only one in front, and holds the other in the air. Before the movement is asked, the horse must already be able to maintain a complete and permanent equilibrium during the ordinary gallop, to execute the jambette at the diagonal effect with great precision and with complete extension of the front leg, and to gallop, not terre-a-terre, but very slowly. (Figures 39, 40.)
The movement is asked by decomposing the air into its elements. The horse gallops slowly in assemblage. The rider stops it, and by means of the right snaffle rein and the left spur, asks immediately the jambette. After the jambette, the horse is allowed to walk. Again the gallop, the stop, and the jambette immediately. These three are repeated for whatever time is needed to calm the horse, and to teach it to keep straight when stopped and giving the jambette.
When the horse has mastered this exercise, the gallop is asked immediately after the jambette,
