The head should be upright, easy, and capable of free motion, right, left, up, or down, without affecting the body. The body must be kept erect and square to the front, having the breast projected, and the stomach retracted, though not so as to injure either freedom of respiration or ease of attitude. The shoulders should be kept moderately and equally back and low; and the arms should hang unconstrainedly by the sides. The balance on the limbs must be perfect. The knees straight, and the toes turned out as described, the weight of the body should be thrown forward, as this facilitates progression. The military position in walking does not essentially differ from this, except in points that exclusively regard the soldier; as that the head be kept well up, and straight to the front, and the eyes not turned to the right or left; the arms and hands kept perfectly steady by the sides, and on no account suffered to move or vibrate: care, however, being taken that the hand does not cling to the thigh, or partake in the least degree of the movement of the limb. THE BALANCE STEP. The object of this is to teach the free movement of the limbs, preserving at the same time perfect squareness of the shoulders, with the utmost steadiness of body; and no labour is spared to attain this first and most essential object, which forms, indeed, the very foundation of good walking. The instructor must be careful that a habit be not contracted of drooping or throwing back a shoulder at these motions, which are intended practically to show the true principles of walking, and that steadiness of body is compatible with perfect freedom in the limbs. 1.--WITHOUT GAINING GROUND. To insure precision, the military words of command are prefixed. Caution--Balance step without gaining ground, commencing with the left foot. The left foot is brought gently forward with the toe at the proper angle to the left, the foot about three inches from the ground, the left heel in line with the toe of the right foot. Rear--When steady, the left foot is brought gently back (without a jerk), the left knee a little bent, the left toe brought close to the right heel. The left foot in this position will not be so flat as to the front, as the toe will be a little depressed. Front--When steady, the word Front will be given as above, and repeated to the Rear three or four times. Halt--To prevent fatigue, the word Halt will be given, when the left foot, either advanced, or to the rear, will be brought to the right. The instructor will afterwards cause the balance to be made on the left foot, advancing and retiring the right in the same manner. 2.--GAINING GROUND BY THE WORD “FORWARD.”