When the rider can put his horse off to either hand with the proper leg, and support the action, he must particularly attend to its truth and union, and try to raise it to the highest animation, riding sometimes rapidly, sometimes slowly, yet always united. When the gallop is disunited and extended to speed, even though the horse is supple and just on his legs, it loses its harmony and regularity of time. The fore-legs then measure less space from each other, and so do the hind-legs, which makes the beats quicker in each, and leaves a space between the beats of the fore-legs and the beats of the hind. In these gallops, it would be highly imprudent to circle or turn, but on a very large scale. _Turns, Changes, Stops, &c. in the Gallop._ In turning the horse to the right and left, at a canter, his fore-hand must be raised with the leading rein, and the haunches pressed forward and under him: at the same time, the outward rein must assist to steady him, and a pressure of the calf of the outward leg keep the haunches from falling too much out. If he is turned suddenly with the inward rein only, without lifting the fore-hand, or applying the outward leg, he must turn on his shoulders, lose power to halt on his haunches, and being twisted round unprepared, will change to the outer leg. In changing, the operation must be performed smoothly and evenly at the same instant; so that, at the finish of the cadence, the body, hands, thighs, and legs of the rider are reversed, for the horse to commence his next cadence with the contrary leg. In stopping in the gallop, the rider must seize the time when the horse’s fore-feet are coming to the ground, which is the beginning of the cadence: and he must take care that the hind feet, coming up to their exact distance, and finishing the cadence, complete the stop: leaving the horse so balanced that he can readily set off again with the same rapidity as before. Besides seizing the exact time, a due degree of power must thus be exerted, conformably to the readiness, obedience, union, or rapidity of the action; for, should the power be deficient, the stop would not be properly effected; and if it be excessive, the horse will be overbalanced on his haunches, and compelled consequently to move his feet after the cadence is finished. Till horses are ready and obedient to the stop, it should not be attempted in violent and rapid gallops; nor even then if they are weak, or the rider heavy.--In these cases, the double arret is used.