Night-firing

When a fixed object is to be fired at by night, the piece should be directed during the day, and two narrow and well-dre ed strips of wood (to prevent injury to the strips from the recoil, they should be nailed at such a distance from the carriage that the space can be filled up with a strip that can be removed before firing) laid on the inside of the wheels, and two others outside of the trail of a siege carriage, and nailed or screwed to the platform. In case of a barbette carriage, the traverse wheels should be chocked in the proper position. To preserve the elevation, measure the height of the elevating-screw above its box, or take the measure between a point on the gun and another on the stock; cut a stick to this length and adjust the gun on it at each fire. Direction of fire may be secured at night with mortars by nailing or screwing two boards to the platform outside of the cheeks, and the elevation by drawing a line acro one of the trunnions, or by inserting a wedge-shaped block of the proper inclination below the mortar and the front transom or step. Night-firing with guns should be limited to a small number of rounds, as it consumes ammunition to little advantage.