The curb-reins are now to be taken evenly by the right hand, and then the little finger of the left hand be passed between the two reins, the left rein being upon the left or outer side of the little finger, and the right rein between the little and third fingers; both curb-reins should next be drawn upward by the right hand until they are nearly the length of the snaffle, and carried across the palm, one rein overlying the other, to the index finger, between its first and second joints, and between the snaffle-reins and the thumb, at which point all the reins must be firmly held by pressure of the thumb against them; the right hand will now remove its hold. ([Fig. 27.]) The above manœuvring of the reins will give the "original position" for the double bridle in the left hand. All these reins should be of nearly equal length, the snaffle being slightly the shortest, so that, while riding with the latter, the curb may be ready for instant use; this may be brought into play by simply turning the wrist so as to carry the little finger up and toward the waist. And the full power of the curb may be brought into action by turning the wrist so as to carry the knuckles down and the nails up, at the same time drawing the little finger toward the waist.
To shorten or lengthen both the curb and snaffle reins evenly without abandoning the horse to himself for a moment, or without ceasing to keep up his action, the following method may be pursued: The loose, disengaged ends of all the reins that extend beyond the index finger of the left hand must be taken between the thumb and forefinger of the right hand, care being taken during this manœuvre to keep up the support to the horse with this hand; the grasp of the left hand upon the reins must now be sufficiently relaxed to allow this hand to slide along the reins downward to shorten them, or upward to lengthen them; this must be effected without deranging their adjustment; when the proper range has been obtained, remove the right hand.
To shorten the curb and lengthen the snaffle-reins: The loose, disengaged ends of all the reins must be held in the same manner as stated in the preceding paragraph, between the thumb and index finger of the right hand, not omitting to keep up a support to the horse; the grasp of the left hand must now be slightly relaxed, and this hand be slid up along all the reins, which movement will lengthen them in the left hand. The grasp of the right hand upon the snaffle-reins must now be relaxed, and the left hand be slid down along the curb-reins, carrying the snaffle-reins with it, until the proper range or distance has been attained, when the right hand may be removed. While these changes are being made, the right hand must sustain the horse by the curb-reins until the left has obtained a firm hold upon all.
To shorten the snaffle and lengthen the curb reins, a course similar to the one just preceding must be pursued, except that in this case the right hand must retain the snaffle-reins, and support the horse by them, while the left hand, in sliding down, will carry those of the curb. In all these changes of the various reins, it must be remembered that after each change has been effected the reins must be held in place by firm pressure of the thumb, as already described.
When either of the reins held in the left hand becomes loose, it may be tightened, by carrying the right hand to and over the left one, seizing the loose rein by its disengaged end that hangs loosely from the left index finger, and drawing it up as far as is necessary. While this is being done, the left hand must not be removed from its position, and should continue to keep up a steady pressure upon the horse's mouth.
In requiring the horse to stop, to back, to turn, or to advance, the management of the double bridle-reins will be exactly the same as stated in the directions given when holding the snaffle-reins in the left hand.
When both the curb and the snaffle reins are held in the bridle-hand, they may be changed to the right hand, when this is desired, as follows: The right hand must be carried to the left; the second finger of the right hand must be placed between the snaffle-reins (already separated by the second finger of the left hand); and the little finger of the right hand between the curb-reins (already separated by the little finger of the left hand); this done, the thumb and fingers of the right hand must be closed upon the reins, which must, at the same time, be released by the left hand.
To restore these reins to the left hand, the pupil must proceed as follows: Carrying the left hand to the right, the second finger of the left hand must be placed between the snaffle-reins, and the little finger of this hand between the curb-reins; this having been done, the thumb and fingers must be closed upon all the reins, while the right hand releases its hold. These several changes can be made whether the horse be moving slowly or rapidly, care being taken to effect them so quietly that the horse will not be abandoned to himself from want of support, nor interrupted in the rhythm of his gait.
If when riding with the double bridle in the bridle-hand, very quick turns have to be made, or when the horse will not yield readily to the movements of the bridle-hand, it will become necessary to separate the reins by taking that of the right snaffle in the right hand; this can be quickly effected by carrying the right hand to and over the left, and seizing the right snaffle-rein with the first three fingers of the right hand; this rein will pass between the third and little fingers and across the palm, so that the loose, disengaged end will escape from between the thumb and forefinger.