bridle, with his hind legs on one of two platform scales and his fore feet on the other. If he took naturally a state of perfect equilibrium, he would thereupon register a weight of two hundred and fifty pounds with each foot, five hundred pounds at each end.
But as a matter of fact, the forward scales register 612 pounds; the rear scales only 388. The horse will not distribute his weight equally between the two pairs of limbs, unless his naturally wrong position is rectified by the demonstrator.
For this purpose, I add a twelve-pound saddle and three pounds of bridle; making the new weight 1015 pounds, which the horse distributes, ten pounds in front and five behind. I take the reins of the bit and raise the animal's head. At once the weights change, and become more nearly equal. The front scales now show 522 pounds and the rear 493. Fifty pounds has shifted to the hind legs.
Still keeping the head up, with the aid of a whip, I place the hind legs side by side, and both perpendicular to the horizontal line of the horse's spine. All the while, I bear lightly on the bit and flex the head at the atlas region. The scales now indicate 510 pounds on the fore legs, 505 pounds on the rear ones. This difference of five pounds arises from the impossibility for a man on foot of keeping the front legs exactly perpendicular upon the scales or obtaining perfect flexion at the atlas region. Allowing for this small difference, we have here an
