When once the lady has gained the above-named _appui_ (the right hand assisting the left), she should be instructed to halt her horse lightly on his haunches preparatory to reining back. And again she should do this by drawing the reins through the fingers of her left hand with the right, keeping the former perfectly steady, and drawing her own figure well up, in order to avoid any tendency to lean forward. On the word "Rein back," which should be given in a very quiet tone of voice, and in the exact cadence in which the master desires his pupil to move her horse to the rear, the lady should feel both reins lightly but firmly for a moment, closing at the same instant her leg so as to keep her horse's haunches under him, in the manner before described when using the snaffle only, but in the present case with greater care and precision. _Lightly_ and _firmly_ feeling the curb reins while pressed by the leg, the horse will take a step back. The reins should be yielded the instant he does so. Two or three steps back are sufficient, when the word "Forward" should be given, preceded by the caution to close the fingers firmly on the reins, and, with whip and leg, keep the horse well up to his work. Feeling this amount of constraint laid upon him, the horse will be inclined at any moment to canter. But here the tact of the master should be exhibited in instructing his pupil to release the horse from his fore-shortened position, by allowing about six inches of rein (or more, if necessary), to pass through her left hand as she presses the horse forward into a free trot (about eight miles an hour). All her firmness of seat will be necessary now, because any irregular action on her part will cause her hand to become heavy, and make the horse canter. The great thing is, not to continue trotting on the curb-rein alone too long. Short lessons often repeated, and intervals in which to correct everything are best for pupil and instructor. When the lady can accomplish trotting out for twenty minutes without allowing her horse to break, she should then be instructed to collect him to a slower pace, bringing him more upon his haunches, and with his forehand more up. This requires the nicest tact and discrimination on the part of the rider, perfect steadiness in the saddle, and firm pressure of the left leg; while the reins should be drawn through the left hand with as much care as though the lady feared to break them. The shortened pace should be smart and active, and the horse so collected as to be ready to turn to the right, or left, or about, or make the inclines at any moment. All these exercises should then be practised in the same order as when the pupil rode, assisted by or on the snaffle only.