A company being in one rank faced to the right, and told off into the number of cannoneers required for the pieces, is formed into detachments by the following commands:

1. In two ranks form detachments.

2. MARCH.

At the first command, the leading man of each detachment faces to the front, and at the second command, the other cannoneers step off together The second man, counting from the right, in each detachment, places himself behind the first, and faces to the front. The two following men will, in like manner, on closing up, form the next file, and so on. The sergeants, according to seniority, take charge of the detachments from right, to left, and tell off their detachments. Each of these sergeants is designated chief of piece.

1. The odd numbers form the rear, and the even numbers and the gunner, the front rank. The right file is numbered 1 and 2; the next file 3 and 4; the gunner is uncovered, and on the left of No. 4; and on his left are as many files as are required, numbered 5 and 6, 7 and 8, &c.

2. The instructor wheels the detachments into column, or faces them by a flank either to the right or left; to the right, if he is to approach the battery on the left; and to the left, if he is to approach the battery on the right. In column, the chief of piece is two paces in front of the centre of his detachment; faced by a flank, he is at the side of the leading front rank man. When the detachments arrive at the distance of four yards from the left or right of the battery, the instructor commands:

DETACHMENTS OPPOSITE YOUR PIECES.

As each detachment arrives in rear of its piece, it is halted by its chief of piece, and wheeled into line or faced to the front, four yards in rear of the platform, its centre in line with the axis. The chief of piece posts himself on the right of his detachment.

3. The instructor commands:

1. Detachments to your posts.

2. MARCH.

Each detachment at the first command is faced to the right by the chief of piece, and at the second command files to the left, the two ranks separating; the rear rank marching to the right of the piece, and the front rank to the left. As each man arrives at, his post, he halts and faces the piece; Nos. 1 and 2 one yard from the epaulment, parapet, or scarp, their breasts eighteen inches outside the wheels of the carriage or checks of the mortar bed; and the remaining numbers and the gunner dressing respectively on Nos. 1 and 2, at intervals of one yard, except that, between Nos. 3 and 5, there is an interval of two yards. With the mortar, Nos. I and 2 are opposite the front maneuvering bolts, and Nos. 3 and 4 opposite those in rear. The chief of the piece, while at the battery, will generally be one yard outside the cannoneers of the left facing the piece, and two yards in rear of the platform or rearmost part of the carriage.

4. The instructor commands:

In place—REST, or REST.

The cannoneers lay down their handspikes. In the first case the men remain at their posts; in the second case, they may leave their posts, but must remain near the piece.

5. The instructor commands

ATTENTION DETACHMENTS.

All resume their posts and handspikes.

6. The instructor commands:

1. Change Posts.

2. MARCH.

3. CALL OFF.

At the first command the cannoneers lay down their handspikes; place their equipments on the Part of the carriage nearest them, and face to their I At the next command, they step off in double-quick time, each advancing one post; No. 2 taking that of No 1. On arriving at their new posts they face the piece and equip themselves.

7. The instructor commands:

1. Detachments rear.

2. MARCH.

The chief of piece faces the detachment to the rear at the first command, and at the second it marches to the rear, the left cannoneers closing on those of the right files to the right, and is halted and faced to the front by the chief of the piece so as to bring its centre opposite the middle of the platform and four yards in rear of it.

Seven men are necessary: one gunner and six other cannoneers.

The piece is in battery.

The implements, &c., are arranged as follows:

Truck-handspikes.—One on each side of the carriage, against the parapet.

Eccentric-handspikes.—One on each side of the carriage, against the parapet.

Maneuvering-handspikes.—Two on the left and one on the right side of the carriage, laid on the ground in a line with the cannoneers, opposite the traverse wheels, the small ends toward the parapet.

Elevating-bar.—Laid across the rear part of the gun carriage, handle to the left.

Two sponges and one rammer—one yard in rear of the cannoneers of the right, the sponges uppermost, the sponge and rammer heads turned from the parapet, inclined slightly from the piece, and supported on a prop.

Pass-box—Against the parapet, behind No. 2.

Tube-pouch-Containing friction primer tubes and the lanyard, which is suspended from the cascable.

Gunner’s pouch-Containing the gunner's level, breech sight, finger-stall, priming wire, gimlet, vent-punch and chalk. Suspended from the cascable.

Vent cover-Covering the vent.

Tompion-In the muzzle.

Broom—Against the parapet on the left of the piece.

Budge-barrel—Employed to hold the cartridges, which is placed at some safe position in the rear. The shells are brought, as required, to the place prescribed for the budge barrel.

The instructor commands:

TAKE IMPLEMENTS.

The gunner steps to the cascable; takes off the vent-cover, handing it to No. 2 to place (against the epaulment outside the pass-box) against the parapet in the rear of his post; gives the tube pouch to No. 3; equips himself with his own pouch and the finger-stall, wearing the latter on the second finger of the left hand; levels the piece conveniently for loading by means of the elevating-bar; applies his level to ascertain the highest points of the base ring and the swell of the muzzle, which he marks with chalk, and is assisted by No. 2 in marking the line of sight on the piece with the chalk-line and resumes his post. After resuming his post, he holds the elevating-bar in his right hand, the lower part on the ground in line with the toes, the arm extended naturally.

No. 3 equips himself with the tube-pouch. Nos. 1 and 2, pass two eccentric-handspikes each to Nos. 3 and 4, and each take a truck handspike with the hand farthest from the wall, and carry them to that side, holding them vertically, the lower end on the ground.

The instructor commands:

1. FROM BATTERY.

The gunner moves two paces to the right of his post. Nos. 3 and 4 apply the eccentric­-handspikes to the ends (if the axle, the handspikes elevated about 30º to the rear, and at the word HEAVE by the gunner, bear down, and throw the wheels into gear; Nos. 1 and 2 then embar (facing from the parapet) in the most convenient mortises of the truck-wheels, and Nos. 3 and 4 insert the eccentric-handspikes into the most convenient mortises of the same wheels. Nos. 5 and 6, respectively facing toward Nos. 3 and 4, seize the eccen­tric-handspikes as near the ends as possible with one or both hands. All being ready, the gunner gives the command HEAVE. Nos. 1, 2, 3, 4, 5, and 6 act together and bear down until the eccentric handspikes are nearly down to the rails, when the gunner gives the command UNBAR, and the hand­spikes are then shifted to other convenient mortises by No.. 3 and 4 and 1 and 2, the latter waiting until 3 and 4 have reinserted theirs, and the same Nos. prepare to bear down as before. The gunner again gives the command HEAVE, and so on, until the face of the piece is one yard from the parapet, when he commands HALT. No. 3 and 4 then place their handspikes on the ends of the axle, and at the command OUT OF GEAR from the gunners throw the wheels out of gear; all take their posts and lay down their handspikes in front of their alignment.

2. Load by detail—LOAD.

Nos. 1, 2, 3 and 4 lay down their handspikes. No. 2 takes out the topmion and places it near the the vent cover. No. 1 faces one and a half steps to his left; steps over the sponge and rammer; faces to the piece; takes the sponge in both hands, the backs down, the right hand three feet from the sponge-head, the left hand eighteen inches from it; returns to the piece, entering the staff in the embrasure; places the left foot half way between the wheel and the face of the piece, in line with the latter; breaks to the right with the right foot, the heels on a line parallel to the piece, the left leg straightened, the right knee bent, the body erect on the haunches, and rests the end of the sponge in the muzzle, the staff in the prolongation of the bore, supported by the right hand, the right arm extended, the left hand flat against the side of the thigh. No. 2 steps to the muzzle, and occupies a position on the left of the piece corresponding to that of No. 1. He seizes the staff with the left hand, back down, near to and outside the hand of No. 1. No. 3 facing the epaulment, steps over the rammer, and seizes the staff as prescribed for the sponge; he returns to his post and stands ready to exchange with No. 1. No. 4 takes the pass-box and goes for a cartridge; returns and stations himself, facing the piece, about eighteen inches to the rear and right of No. 2. The gunner mounts upon the tongue of the chassis, placing his left foot about six inches from the rear transom of the gun carriage, and breaks well to the rear with the right foot, the toe to the right. Nos. 1 and 2 place the feet nearest the carriage on the rails of the chassis in line with the face of the piece; the other feet are in the most convenient position on the parapet. The gunner closes the vent with the second finger of his left hand, bending forward to cover himself by the breech; turns the elevating screw with the right hand to adjust the muzzle conveniently for loading. In the meantime, Nos. 1 and 2, at the words One - two - three -, &c., insert the sponge by the following motions: 1 Motion - They insert the sponge as far as the hand of No. 1, bodies erect, shoulders square. 2nd Motion - The slide the hands along the staff, and seize it arm's length. 3rd Motion - The repeat the first motion. 4th Motion - The repeat the second motion. 5th Motion - The force the sponge to the bottom of the bore. No 1 then replaces his left hand on the staff, back up and six inches nearer the muzzle than his right. No. 2 places his right hand, back up, between the hands of No. 1. Should the sponge or rammer reach the bottom of the bore at the third or fourth motion, then what is prescribed for the fifth motion will be performed at the third or fourth. The knee on the side toward which the body is to be inclined is always bent, the other straightened; and the weight of the body added as much as possible to the effort exerted by the arms.

The shell is brought up in the following manner:

No. 6 takes the handspike and goes for the shell, followed by No. 5. He passes the small end of the handspike through the ring of the shell hooks, or through the loop in the rope handle; No. 5 holds the small end of the handspike with his right hand, No 6 the butt end, No. 5 in front. They bring it up on the left side of the piece, and placing themselves parallel to the parapet, No. 5 behind No. 2. No 5 stepping between the parapet and the face of the piece, passes his end of the handspike to No. 1, and places himself on the tongue, or on the platform, opposite the muzzle; No. 6 gives his end of the handspike to No. 2. Nos. 1 and 2 raise the shell until it is opposite of the muzzle, when No. 5, applying his hands under it, raises the sabot and inserts it in the muzzle. No. 2 withdraws the handspike and passes it to No. 6, who replaces it. No. 5 pushes the shell into the muzzle and returns to his post.

3. SPONGE.

No.s 1 and 2 pressing the sponge firmly against the bottom of the bore, turn it three times from right to left, and three times from left to right; replace hands on the thighs, and withdraw the sponge by motions contrary to those inserting it. When the sponge fits tight, Nos. 1 and 2 may use both hands. No. 2 quits the staff, and turning toward No. 4, receives from him the cartridge, takes it in both hands, backs down, and introduces it bottom foremost into the bore, seams to the sides; he then grasps the rammer in the manner prescribed for the sponge. No. 1 rising upon the right leg, and turning to his left, passes the sponge above the rammer to No. 3 with his left hand, and receiving the rammer with the right, presents it as prescribed for the sponge, except that he rests the rammer-head against the right side of the face of the piece. No. 3, as soon as the sponge is withdrawn, passes the rammer under the sponge into the embrasure with the right hand, receives the sponge from No. 1 with the left, replaces it upon the prop, and resumes his post. No. 4, setting down the pass-box, takes out the cartridge and presents it with both bands to No. 2, the choke in the front; returns the pass-box to its place; and picks up a ball, and afterwards a wad, if required. Nos. 1 and 2 force the cartridge home by the same motions as in the case of the sponge.

4. RAM.

Nos. 1 and 2, drawing out the rammer to the full extent of their arms, ram with a single stroke. No. 2 quits the staff, and turning toward No. 4, receives from him the ball, and a wad if required, whilst No. 1 throws out the rammer, and holds the head against the right side of the piece. No. 2, introducing the ball and wad into the bore, seizes the staff with the left hand, back down. No. 4 then resumes his post. Nos. 1 and 2 force the ball and wad home together by the same motions, and ram in the same manner as prescribed for the cartridge (except that the shell is set carefully home, without being rammed). No. 2 quits the rammer, sweeps, if necessary, the platform on his side, passes the broom to No. 1; and resumes his post. No. 1 throws out the rammer, and replaces it on the prop under the sponge; sweeps his side of the platform, if necessary, and resumes his post. The gunner pricks the cartridge, leaves the priming wire in the vent and resumes his post; and if firing beyond point blank, adjusts the breech-sight to the distance.

5. IN BATTERY.

Nos. 3 and 4 apply their eccentric-handspikes to the ends of the axle, and at the command HEAVE by the gunner, throw the wheels into gear, and Nos. 1 and 2 insert their truck-hand-spikes into the most convenient mortise. of both wheels to start the carriage forward. The eccen­tric-handspikes are held firmly by Nos. 3 and 4 while the piece is running into battery. In case the gun should run too rapidly, they immediately throw the wheels out of gear. As soon as the head of the carriage touches the hurters, the eccentric and truck handspikes are laid on the platform in front of the cannoneers.

6. POINT.

No. 3 lays down his handspike; passes the hook of the lanyard through the eye of a tube from front to rear, and holds the handle of the lanyard in his right hand, the hook between the thumb and forefinger. Nos. 5 and 6 embar under and perpendicularly to the trail of the maneuvering bolts. The gunner, placing himself at the stock, as at the commend Load, withdraws the priming wire, and assisted by Nos. 5 and 6, gives the direction; causing the trail to be moved by commanding Left or Right, tapping, at the same time, on the breech for No. 5 to move the trail to the left or on the left side for No. 6 to move it to the right. He then places the center of the breech-sight accurately upon the chalk mark on the base-ring, and by the elevating-screw, gives the proper elevation, rectifying the direction, if necessary. The moment the piece is pointed, he rises on his left leg, and gives the word Ready, signaling with both hands, at which Nos. 5 and 6 unbar, and resume their posts; takes the breech-sight in his left hand, and goes to the windward to watch the shot. No. 3 inserts the tube in vent; drops the handle, allowing the lanyard to uncoil as he steps back to his post, holding it slightly stretched with his right hand, the cord passing between the fingers, back of the hand up, and breaks to the rear a full pace with the left foot, the left hand against the thigh.

Modification-Nos. 1 and 2 go the traverse wheels, and facing the parapet, embar under the fork-bolts or under the wheels. The gunner is assisted by Nos. 1 and 4 in giving the direction, and before dismounting from the chassis after the command Ready, receives the tube from No. 3, which he inserts into the vent. No. 4 turns the handle of the elevating screw, by the direction of the gunner. If a greater elevation than one notch is to be given, the gunner, by means of the elevating-bar, transfers the prawl to the proper notch, and, if necessary, Nos. 1 and 2 insert a handspike in the muzzle, to enable the gunner to free the prawl from the notch.

7. Number one (or the like)—FIRE.

No. 3 pulls smartly on the lanyard. Immediately after discharge of the piece, Nos. 1 and 2 chock the wheels, and resume the erect position. No. 3 resumes the erect position, and rewinds the lanyard, returning it, if dry, to the tube-pouch. The gunner, having observed the effect of the shot, returns to his post.

60. The implements, &c., are arranged as follows:

Handspikes.—Two against each cheek, leaning upon the four manoeuvring bolts, the small end toward the epaulment, the ends of the front hand-spikes even with the front of the cheeks.

Haversack.—Containing fuzes, and a pair of sleeves. Attached to the tompion, and lying upon the mortar.

Tube-pouch.—Containing the priming-wire, fric­tion tubes, and the lanyard, wound in St. An­drew’s cross upon its handle. Attached to the tompion, and lying upon the mortar.

Gunner’s-pouch .—Containing the gunner’s level, gimlet, vent-punch, and chalk. Attached to the tompion, and lying upon the mortar.

Quadrant, Plummet, Pointing-Cord, Scraper, Wiper, Shell-hooks.—In a basket, between the cheeks of the mortar bed.

Tompion.—In the muzzle.

Quoin.—Under the mortar, upon the bolster, its handle to the left.

Pointing-stakes, Maul, Broom.—With the basket.

To the same battery there should be one hammer-wrench.

The instructor commands:

PLANT THE POINTING-STAKES.

61. The gunner, assisted by Nos. I and 2, plants the stakes as explained in Part II, Section 2. No. 1, having driven the pointing-stakes, drives another stake one yard behind his post, for holding the wiper, and replaces the maul near the basket. The gunner lays the slack of the pointing-cord at the foot of the epaulment, leaving the plummet at the stake in rear of the piece. All then resume their posts.

The instructor commands:

TAKE IMPLEMENTS.

62. The gunner steps to the front of the piece, gives to No. 1 the sleeves and the wiper; to No.2 the basket and maul; to No. 3 the tube-pouch and broom; and to No. 4 the haversack; equips himself with the gunner’s-pouch, applies his level to ascertain the line of metal, which he marks with chalk, and resumes his post. No. 1 hangs the wiper to the stake behind his post, and, assisted by No. 3, puts on the sleeves. No.2 removes the tompion, which he places with the basket and maul one yard behind him, and lays the shell hooks on the ground between himself and the basket. No. 3 lays the broom behind him, and equips himself with the tube-pouch. No. 4 wears the haversack from the shoulder to the left side. All take their handspikes. These are held as in No 10, and when laid down they are returned, except in one case, to their places on the maneuvering bolts.

The instructor commands:

1. IN BATTERY.

63. The gunner, making a half face to his right, steps off, left foot first, and places himself two paces in rear of the platform, facing the piece. Nos. 1, 2, 3, and 4, facing the epaulment, embar; Nos. 1 and 2 under the front manoeuvring bolts, and Nos. 3 and 4 under those in rear, engaging the butts of their handspikes about three inches. All being ready, the gunner commands HEAVE, which will be repeated until the piece is on the middle of the platform, when he commands HALT, at which all unbar, and resume their posts.

2. Load by detail—LOAD.

Nos. 1, 3, and 4 lay down their handspikes. The gunner, taking the scraper, places himself in front of the muzzle, and scrapes the bore, draws out the scrapings with the spoon, returns the scraper to the basket, and again places himself at the muzzle, one yard in front. No. 1, turning to his right, takes the wiper with the right hand, faces to his left, and placing the left foot near the maneuvering bolt, the right in front of the muzzle, and the left hand upon the face of the piece, wipes out the bore, and resumes his post. No. 3, as soon as the piece is wiped, clears the vent with the priming-wire, sweeps the platform, if necessary, and resumes his post and handspike. Nos. 2 and 4, facing to their right—No. 2 holding his handspike at the middle, under his left arm, butt-end to the front, and taking the shell-hooks in his right hand—go for a cartridge and shell. While No. 4 is getting the cartridge, No. 2 inserts the shell-hooks into the ears of a shell, and passes the small end of the handspike through the ring. In carrying the shell, they hold the handspike in their right hands, No. 4 at the small end, and in advance of No.2. Passing by the left of the piece, between the gunner and the muzzle, they rest the shell upon the platform, against the middle of the transom. No. 1, first placing the wiper upon the handspike, receives its small end from No. 4, who then gives the cartridge to the gunner. The gunner, advancing the left foot, places his left hand on the face of the piece, introduces the cartridge into the mouth of the chamber with the right hand, and carefully pours in the powder, returns the bag to No. 4, and spreads the powder evenly over the bottom of the chamber. If firing with paper fuses, he receives one from No. 4, and inserts it in the fuse plug. No. 4 returns the cartridge bag to the haversack, and takes the wiper. Nos. 1 and 2 raise the shell, and hold it about a foot from the ground, while No. 4 wipes it; they then lift it into the muzzle. The gunner steps forward, and with his left hand over the handspike, the right hand under and nearer to it, seizes the shell hooks, and assists in lowering the shell gently into its place. No. 2 then withdraws the handspike from the ring, and resumes his post. No. 1 takes up his handspike. gunner sees that the fuse is in the axis of the piece, and throws the shell hooks to their place behind No. 2; if firing with wooden fuzes, he uncaps the fuze. No. 4, after wiping the shell, returns the wiper to its place, lays the slack of the pointing cord over the left maneuvering bolts, its end at the rear pointing stakes, and resumes his post and handspike.

3. POINT.

64. Nos. 1 and 2, facing toward the epaulment, embar upon the bolster, under and perpendicularly to the piece. The gunner applies the quadrant to the left side of the face of the piece with the left hand, and moves the quoin with the right, giving the command RAISE, or LOWER, until the piece is at the required elevation—usually 45º. Returning the quadrant to the basket—Nos. 1 and 2 at the same time unbarring and resuming their posts—he places himself behind the rear pointing stake, and holding the pointing cord in the left hand and the plummet in the right, gives he direction, commanding MORTAR LEFT, MORTAR RIGHT, MUZZLE LEFT, MUZZLE RIGHT, TRAIL LEFT, TRAIL RIGHT, according to circumstances.

To throw the mortar to the left.—Nos. 2 and 4, facing each other, embar under the manoeuvring boIts. Nos. 1 and 3, facing the epaulment, embar under the notches near them. When all are ready, the gunner gives the commands HEAVE—STEADY. The cannoneers remain embarred until he gives some other command, or makes the signal to unbar.

To throw the mortar to the right.—Nos. I and 3 embar under the manoeuvring bolts, and Nos. 2 and 4 under the notches.

To throw the muzzle to the left.—Nos. 1 and 3, facing toward the epaulment, embar under the front notches; No. 1 under the inside of the left notch.

To throw the trail to the left—Nos. 1 and 3, facing toward the epaulment, embar under the rear notches; No. 3 under the inside of the left notch.

The muzzle or trail is thrown to the right, in a similar manner to the preceding, by Nos. 2 and 4.

65. The direction having been given, the gun­ner gives the word READY, and makes a signal with both hands, leaves the plummet at the rear stake, returns the pointing cord to the foot of the epaulment, and goes to observe the effect of the shot. Nos. 1, 2, and 4 taking their handspikes, go four yards in rear of the platform and face to the front, No. 4 between Nos. I and 2, their handspikes held erect by the right side, the right arm extended nat­urally. No. 3 lays down his handspike six inches in his front, parallel to the edge of the platform, and makes ready a friction tube, as in No. 17; advancing the right foot, he inserts the tube in the vent, rises on the left leg, and moves three paces to the rear in prolongation of the right cheek, faces to the front, and holds the handle of the lanyard, and breaks off as prescribed in No. 17.

The lanyard should be passed through a loop of rope, attached to the rear right manoeuvring bolt.

4. Number one (or the like)—FIRE.

No. 3 pulls smartly on the lanyard. No. 3 resumes the erect position, and rewinds the lanyard, returning it, if dry, to the tube-pouch. On the discharge of the piece, all but the gunner resume their posts. As soon as the shot strikes, he returns to his post.

66.To continue the exercise, the instructor causes the piece to be moved toward the rear of the platform, directs Nos. 2 and 4 to take out the shell and carry it to its place in rear, and then re­sumes the series of commands, beginning with IN BATTERY.

In changing posts, No. 2 passes by the front of his piece.

67. The piece having been placed as at the command IN BATTERY, the instructor gives the command REPLACE IMPLEMENTS, at which all lay down their handspikes. No. 2 puts in the tompion, and assists No. 1 to pull up the pointing stakes. The gunner receives the implements and replaces them between the cheeks.

Three men are necessary: one gunner and two other cannoneers.

68. The implements, &c., omitting two hand-spikes, and adding a grummet-wad, are the same as for the 10-inch siege mortar, and are arranged in the same manner. The grummet-wad is in the basket.

69. The service of this piece is the same as that prescribed for the 10-inch siege mortar, with the following modifications: at the command TAKE lMPLEMENTS, No. 1 performs the duties of No. 3, and No. 2 those of No. 4, each in addition to his own. No. 2 assists No. 1 to put on the sleeves, and places the wad on the platform, in front of the transom. At the command IN BATTERY, No. 1 embars under the right front manoeuvring bolt, and No. 2 under the left rear one. At the command LOAD, No. 1, having wiped out the mortar, returns the wiper to the stake, pricks, and, if necessary, sweeps the platform. No. 2, laying down his hand­spike, goes for a cartridge and shell, carries the shell in the right arm, passes between the gunner and the muzzle, and lays it on the wad, gives the cartridge, and—if firing with paper fuzes—a fuze to the gunner, and takes the wiper from the stake. The gunner, on returning the scraper to the bas- ket, takes the shell hooks, and lays them on the ground in front of the muzzle. Having poured in the powder, he returns the cartridge bag to No. 2, and distributes the powder evenly over the bottom of the chamber, puts the fuze—if a paper one—into the fuze plug, inserts the hooks into the ears of the shell, raises It about a foot from the ground, and holds it while No. 2 wipes it, and then places it in the bore. No. 2 replaces the wiper upon the stake, lays the slack of the pointing cord over the left manoeuvring bolts, and resumes his post. At the command POINT, Nos. 1 and 2 embar under either the front or rear notches, as required. At the sig­nal from the gunner, No. 1 prepares to fire the piece as prescribed for No. 3 in No. 65.

70. Same number of men are necessary as for the service of the 8-inch siege mortar. The implements, &c., and their arrangement, are the same as prescribed for that mortar. Instruction also the same. To prepare its ammunition, and to transport it by hand, two additional men are required. The gunner carries the basket and implements.

71. Five men are necessary, as in case of the siege mortar of the same calibre. The implements, &c., with the addition of a sponge, and their ar­rangement, are the same as for that mortar. The sponge is placed upon props one yard behind No. 1, the sponge-head toward the epaulment.

72. The instruction for this piece is the same as that prescribed for the siege mortar of the same calibre, with the following modifications: No. 1; after wiping the bore, sponges out the chamber; for this purpose he mounts upon the right cheek and bolster. The gunner mounts upon a block placed in front of the muzzle, in order to scrape the bore, and put in the cartridge and shell. The car­tridge is put directly into the chamber by the gun­ner, and rammed by No. I. To lift the shell into the muzzle, Nos. 2 and 3 mount upon the cheeks, and are assisted respectively by the gunner and No. 1. In giving the elevation, Nos. 1 and 2 are assisted by Nos. 3 and 4. Before priming, No. 3 pricks a second time.

73. The service of a 13-inch mortar and stone mortar are the same as for the 10-inch sea-coast mortar.