1. Both legs, if sufficient momentum is not already obtained, should send the horse up into the bit to receive the indications of the reins.
2. The right direct rein makes the horse look to the side toward which he should march, and by throwing the weight slightly to the right begins the displacement of the center of gravity towards the right. The left rein of support acts at the same time as the preceding, to insure the lateral displacement of the forehand to the right by further displacing the center of gravity.
3. The left leg, at this moment, becomes preponderant in order to direct the haunches to the right, while the right leg acts if necessary to limit the displacement of the haunches, and to oblige the horse to maintain his gait and to gain ground to the front as well as to the side.
4. The seat is displaced towards the right to aid the horse’s movement to that side. (De Saint-Phalle.)
The following are exercises on two tracks:
1. On Two Tracks, Haunches In.—A two-track movement along the track, with the head to the wall, in which the haunches move on an inside track, the horse being in the position described above for the work on two tracks and being governed by similar aids.
2. On Two Tracks, Haunches Out.—Same as above, except the croup is to the wall and the fore quarters move on an inside track, the hind quarters on the track.
3. On Two Tracks on the Diagonal.—A movement in which a horse moves across the hall on the diagonal on two tracks.
4. On Two Tracks on a Circle.—Described by its name. The haunches being on a smaller or larger circle than the fore quarters. The same principles apply in each case as described for work on two tracks.