These calks on the shoe of a knee and arm hitter should be a little thin so as to catch hold of the ground as the foot goes to twist before he picks it up; they will prevent a certain amount of twisting while the body of the animal is gliding over the weight-bearing portion of the leg as the foot leaves the ground. They will have a tendency to make him break over squarer and not so hard on the outside toe as the foot is leaving the ground. Now if your knee hitter wears a toe weight attach it towards the inside toe as far as possible but not far enough to the inside so as he will strike the opposite leg with it. When the feet of a knee hitter have been gotten in the shape as described herein and shod accordingly; why, the horse will think that he has been baptized and born over again. A perfect foot is rare, but with good judgment, a good eye and a little patience and perseverance a lot can be accomplished that will surprise some of those that think they know it all. In a knee hitter, also in an arm hitter, the bones of the foot and leg do not work true in their sockets, clear up to the knee, even the joint at the knee does not work true, the knee joint has a faulty motion, instead of breaking straight forward, it breaks out sideways as the rest of the leg starts to wing in. By building the foot mostly to the inside of the leg and having width and height of foot on the inside you are taking some of the power away that causes the winging in, and the breaking outward of the knee. It is something strange, but I have known knee and shin and arm hitters to be turned out with their shoes on in paddocks, and you would seldom see them hurt themselves, but put the harness on, hitch them up, and start them at speed and take a pull of 75 or 100 pounds on their lower jaw and the trouble would begin. The directions in this article for fixing the foot for knee and arm hitting are also the surest remedy for horses that toe out badly, a fault that is so objectionable to all horsemen. If you use a sideweight shoe on a front foot to prevent shin, knee and arm hitting, the heavy part of shoe should be on the inside of foot, but if you leave the outside of the foot one-sixteenth or one-eighth of an inch higher than the inside, you will be working against the results you are looking for.