When the saddle is on the horse, the lowest part of the seat should rather be behind its centre, as it is there that the weight of the body should fall, and by that means the thighs can keep their proper position. The best test of the adaptation of the seat is, when the rider, without stirrups or effort, easily falls into his proper place in the saddle. Stirrups should not be used until the pupil is capable of riding without them. Their proper length is when the upper edge of the horizontal bar reaches a finger’s breadth below the inner ankle-bone. When the feet are in the stirrups, the heels should be about two inches lower than the toes. No more than the natural weight of the limbs should be thrown upon them. It is by an accurate position, and an easy play of the ankle and instep, that the stirrup is retained, so as to slip neither forward nor backward, even if the toe be raised for a moment. The position on horseback with stirrups differs from that without them only in this, that the thigh being, by the stirrup, relieved from the weight of the leg and foot, the knee is slightly bent, and rather before the lines which these form in the position without stirrups. In hussar riding, hunting, &c., the breadth of four fingers should intervene between the fork and the saddle when the rider stands up. Spurs should never be used but by an accomplished rider. When it is necessary to employ them, they should be applied a few inches behind the girth, as low as possible, and with the lightest touch capable of producing the effect. As to the bridle, in order to give the greatest possible ease to the snaffle, a large and polished bit is necessary. Most bits are too small and long, bend back over the bars of the horse’s jaw, work like pincers, and cut his mouth. To give the greatest degree of severity, the bit, while hot, is twisted into a spiral form, so as to present to the jaw a rough and sharp surface, capable of pressing the bars or lips with greater or less severity. The degrees of punishment which this bit is capable of inflicting are generally sufficient for all the purposes of correction. It is therefore best to ride with a snaffle, and to use a curb only occasionally when absolutely necessary. In all cases, the rider should observe that the horse is furnished with a bit proper for him. If too light, it may have the effect already described. If too heavy, it may incline him to carry the head low, or to rest upon the hand, which jockeys call “making use of a fifth leg.” The simplest and most useful of the _curb_ kind is the Weymouth bit, which consists of a strong plain mouth-piece of uniform thickness, without any upset, but merely a curve forwards, to give ease to the tongue.