sustain his movement, and will make him descend softly into the saddle, and into the cadence marked by the pace of the horse. He should always rise from under himself, that is to say, he should let the horse raise him, while helping the movement with the knees and ankle joints ; but the upper part of the body should do nothing. Otherwise, the muscles of the loins and shoulders will be contracted, the rider will become stiff, and will not be firmly united to his horse. The body ought to rise and fall as a whole.

The rider who hollows out his back, in place of using only his legs, necessarily carries his abdomen forward when he rises, and backward when he descends into the saddle, than which nothing can be more ungraceful.

Only one-third (the ball) of the foot should be placed in the stirrup. If the foot is " home," the ankle will lose all its elasticity, and consequently the trot will become stiff and painful.

The natural trot of a horse which is not upset or suffering, is an alternate and absolutely identical movement of the two diagonals.

At the rising trot, the rider can trot either on the left or right diagonal biped.^[1]

The rider is said to trot on the left diagonal biped, when he rises at the same moment that the horse raises his left fore foot, and comes down on the saddle, when the horse puts that foot on the ground.

In the well-executed English trot, the rider rises and comes down only once during the succession of the two bipeds. He rises and descends along with the left biped, for instance, without the right biped having any influence on his move-