The Lessons of the Head and Croupe to the Wall are excellent to confirm a Horse in Obedience. In effect, when in this Action he is, as it were, balanced between the Rider's Legs, and by working the Croupe along the Wall, you are enabled not only to supple his Shoulders, but likewise to teach him the Aids of the Legs.

For this Purpose, after having well open'd the Corner, turn your Hand immediately, and carry it in, in order to direct your Horse by your outward Rein; taking always care to support the Croupe with your outward Leg directly over-against, and about two Feet distant from the Wall: Bend your Horse to the Way he goes, and draw back the Shoulder that is in with your inner Rein, because the outward Leg being carried with more care over the inner Leg by means of the outward Rein, the Horse will cross and bring one Leg over the other, the Shoulders will go before the Croupe, you will narrow him behind, and consequently put him upon his Haunches.

You ought to be careful at the same time, and see that your Horse never falsifies or quits the Line, either in advancing or going backward.—If he presses forward, support him with your Hand; if he hangs back, support him with your Legs, always giving him the Leg that serves to drive him on, stronger than the other which serves only to support him; that is, acting stronger with the Leg that is without, than with that which is within.

The Lesson of the Head to the Wall is very efficacious to correct a Horse that forces the Hand, or who leans heavily upon it, because it compels him to put himself together, and be light upon the Hand with less Aids of the Bridle; but no Horse that is restive or ramingue should be put to it, for all narrow and confin'd Lessons serve only to confirm them in their natural Vice.—Place your Horse directly opposite the Wall, at about two Feet distance from it; make him go sideways, as I have already directed in the Article of Croupe to the Wall; but left one Foot should tread upon the other, and he should knock them together and hurt himself, in the Beginning of both Lessons you must not be too strict with him, but let his Croupe be rather on the contrary Side of his Shoulders, since by this means he will look towards the Way he is going more easily, and be better able to raise the Shoulder and Leg which is to cross over the other.—By degrees you will gain his Haunches, and he will grow supple before and behind, and at the same time become light in the Hand: Never forget that your Horse ought always to be bent to the Way he goes; in order to do this readily, guide him with the outward Rein; for very often the Stiffness of the Neck or Head is owing to nothing but the confined Action of the outward Shoulder; it being certain, that either the Difficulty or Ease of working either of those Parts, depends entirely upon the other; your Horse going thus sideways, carry your Hand a little out from time to time; the inner Rein by this means will be shortened, and make the Horse look in, the more it enlarges him before, by keeping his Fore-leg that is in, at a distance from the Fore-leg that is out, which consequently bringing the inner Hinder-leg near to the outward, confines his hinder Parts, and makes him bend his Haunches, especially the outward, upon which he rests his Weight, and keeps him in an equal Balance.—Never put your Horse to this Lesson, till he has been work'd a long while upon large Circles, his Head in, or to the Center, and his Croupe out; otherwise you would run the Risque of throwing him into great Disorder.

The greater part of Defences proceed from the Shoulders or Haunches, that is to say, from the fore or hinder Parts; and thence the Horse learns to resist the Hand or Heel. It is the want of Suppleness then, that hinders the Horse from executing what you put him to do; and how can it be expected that he should answer and obey, when he is stiff in the Shoulders, Haunches, and Ribs? especially if, without reflecting that Suppleness is the Foundation of all, you press and teize him, and put him to Lessons beyond his Power and Capacity.