Total weight, ready for firing 13 lbs. 10 oz. Total number of balls and individual pieces 201 Bursting-charge 3 ounces SHRAPNEL MADE BY AMERICAN PROJECTILE CO. (Fig. 45.) [Illustration: FIG. 45.] The entire case is of wrought steel electrically welded together so as to form a complete hardened wrought-steel case without joint. The powder-chamber is formed in the base by a hard wrought-steel diaphragm (_d_) supported by a cast-iron spider, and connected through the centre of the shell (axially) to the fuze-opening by a cast-iron tube. It is smooth-finished, and either tinned or lacquered. The shell contains 170 bullets (34 to the pound) packed in circular layers, and they are held firmly in position by a resin matrix. The bullets are introduced through a hole at _c_. The exterior is painted as follows: body from the band forward, to include three fifths of head, black; remaining part of head, and part of body in rear of band, vermilion. The band is of copper. Total weight of projectile complete 13½ pounds Total number of balls and individual pieces 228 Weight of bursting-charge 3 ounces The Frankford Arsenal combination fuze is used. This fuze weighs 17½ ounces; but if made of aluminum it will weigh only 7¾ oz. For field-artillery guns it is graduated from 1 to 15 seconds, the graduations being based upon the time of burning in flight. Each entire second is marked by a through-hole in the cone-cover, and each of these spaces is sub-divided into six equal spaces by holes nearly through the cover, which for the 3.2-inch gun will correspond to the following distances, viz.: 70 yards at 1000 yards range; 55 yards at 2000 yards range; 48 yards at 3000 yards range; 42 yards at 4000 yards range. The following table gives the mean of five shots in each group: Seconds. Range. 2 883 yards 3 1401 " 5 1966 " 6 2433 " 8 3037 " 9 3461 " 12 4225 " THE FRANKFORD ARSENAL COMBINATION FUZE, 15 SECONDS, MODEL 1894, FOR SHRAPNEL OF FIELD-GUNS. This is a time and percussion fuze (Fig. 46). It weighs 17½ oz. The time element is contained in the front part of the bronze body (_a_) of the fuze, and the percussion element in the rear part. The time-plunger (_b_) has five lugs (_k_) which hold the plunger in position above the firmly fixed steel firing-pin (_c_) after the safety-pin has been withdrawn; these lugs are broken by the shock of discharge. The safety-pin (_j_) passes through a hole in the upper part of the plunger, and it and the lugs are protected by the brass cap which is pierced to allow the insertion of the safety-pin. [Illustration: FIG. 46.]