It should be painted with a “bull’s-eye” and lines, corresponding _precisely_ with those of the wooden target. The wooden target station should be provided with a ball-proof sentry-box for the marker, on wheels; and each of the intermediate stations with a like ball-proof sentry-box, a long wooden shed, with a locker in it for the paper target, and a very solid and steady rest on wheels, with a groove at the top for the steady firing from it of the rifle, at the same height from the ground as the “bull’s-eye” in the targets. To prevent accidents, four or five bells should be hung on pillars at intervals on the side of the line of practice, with short flag-staffs above them, for the hoisting of signals. The size of the paper targets should be calculated to include the widest ordinary variations of the bullets. Three feet might be sufficient for the furthest from the butt, the width gradually increasing to twelve feet, at the nearest station to the wooden target. The height must rise and fall, as far as it might be practicable, with the line of the ordinary highest flight of the bullet. Fifty yards have been given as the proper interval between the paper targets, because that distance suited the round ball and regulation musquet. The very elongated parabola of the course of the conical bullet may admit of that course being sufficiently shown in paper targets one hundred yards apart. It did not appear, in the experiments made, that the resistance of the paper had any effect of consequence on the flight of the ball. This of course would depend much upon the texture of the covering material. In calm weather, a little water sprinkled on the paper targets would really make resistance nominal. The foregoing preparations being completed, and the instructor having, by means of them, made himself well acquainted with the powers of his rifle—_that_ rifle, moreover, being of the kind which his recruits or pupils are to bring with them—the squad takes post at the longest effectual range station,—we will say, for the ordinary infantry rifle, at eight hundred yards. The paper targets are left open, and the wooden target with its “bull’s eye,” seen. The wooden rest is placed in the centre, and a rifle laid steadily in it, at the elevation given by the instructor as necessary for hitting the distant “bull’s eye.” To prevent accidents, this rifle is not cocked. At a signal given the paper targets are shut, beginning with the nearest to the butt, the recruits being made to remark, as they are successively closed, that the “Bulls’ eyes” are in a perfect line. The nearest bell is rung; two minutes are allowed for persons on the line to run into the ball-proof sentry-boxes, and the shot is steadily fired.