Hold your Hand three Fingers breadth from your Body, as high as your Elbow, in such a Manner that the Joint of your Little-finger be upon a right Line with the Tip of the Elbow; let your Wrist be sufficiently rounded, so that your Knuckles may be kept directly above the Neck of your Horse; let your Nails be exactly opposite your Body, the Little-finger nearer to it than the others, your Thumb quite flat upon the Reins, which you must separate, by putting your Little-finger between them, the right Rein lying upon it; this is the first and general Position.
Does your Horse go forward, or rather would you have him go forward? Yield to him your Hand, and for that Purpose turn your Nails downwards, in such a Manner as to bring your Thumb near your Body, remove your Little-finger from it, and bring it into the Place where your Knuckles were in the first Position, keeping your Nails directly above your Horse's Neck; this is the second.
Would you make your Horse go backwards? quit the first Position, let your Wrist be quite round, let your Thumb be in the Place of the Little-finger in the second Position, and the Little-finger in that of the Thumb, turn your Nails quite upwards, and towards your Face, and your Knuckles will be towards your Horse's Neck; this is the third.
Would you turn your Horse to the Right, leave the first Position, carry your Nails to the Right, turning your Hand upside down, in such a manner, that your Thumb be carried out to the Left, and the Little-finger brought in to the Right; this is the fourth Position.
Lastly, Would you turn to the Left, quit again the first Position, carry the Back of your Hand a little to the Left, so that the Knuckles come under a little, but that your Thumb incline to the Right, and the Little-finger to the Left; this makes the fifth.
These different Positions however alone are not sufficient; we must be able to pass from one to another with Readiness and Order.——Three Qualities are especially necessary to the Hand. It ought to be firm, gentle, and light; I call that a firm or steady Hand, whose Feeling corresponds exactly with the Feeling in the Horse's Mouth, and which consists in a certain Degree of Steadiness, which constitutes the just Correspondence between the Hand and the Horse's Mouth, which every Horseman wishes to find.
An easy and gentle Hand is that which by relaxing a little of its Strength and Firmness, eases and mitigates the Degree of Feeling between the Hand and Horse's Mouth, which I have already described.
Lastly, a light Hand is that which lessens still more the Feeling between the Rider's Hand and the Horse's Mouth, which was before moderated by the gentle Hand.
The Hand therefore, with respect to these Properties, must operate in part, and within certain Degrees; and depends upon being more or less felt, or yielded to the Horse, or with-held.
It should be a Rule with every Horseman, not to pass at once from one Extreme to another, from a firm Hand to a slack one; so that in the Motions of the Hand, you must upon no account jump over that Degree of Sensation which constitutes the easy or gentle Hand. Were you at once to go from a firm Hand or a slack one, you would then entirely abandon your Horse; you would surprize him, deprive him of the Support he trusted to, and precipitate him on his Shoulders, supposing you do this at an improper time; on the contrary, were you to pass from a slack to a tight Rein all at once, you must jerk your Hand, and give a violent Shock to the Horse's Mouth, which rough and irregular Motion would be sufficient to falsify the finest Apuy, and ruin a good Mouth.