_Case shot_—5 rounds per day each.
_Carcasses_—1 per day each.
_Powder_—1 lb. per charge; 1 lb. 14 oz. for bursting.
20—5½ Inch mortars, on wooden beds.
50 _Shells_ for each, per day, for the whole
siege; charge 8 oz.—12 oz. for bursting.
_Flannel cartridges_, for ⅓ the number of rounds.
_Tin_ tubes in the same proportion.
_Portfires_, ½ the number of rounds with tubes.
_Fuzes_, ⅒ to spare.
_Match_, 50 cwt.
Spare carriages for 24 Prs. seven.
2 Devil carriages.
6 Sling carts.
6 Block carriages.
3 Forge carts.
3 Store waggons, with iron and coals.
3 Triangle gins, complete.
6 Laboratory tents.
2 Small petards.
4 Grates for heating shot.
_Of the Arrangement of Artillery at a Siege._
The first arrangement of the artillery at a siege is to the different
batteries raised near the first parallel, to enfilade the faces of the
work on the front attacked, which fire on the approaches. If these
first batteries be favorably situated, the artillery may be continued
in them nearly the whole of the siege; and will save the erection of
any other gun batteries, till the besiegers arrive on the crest of
the glacis. It however frequently happens, from local circumstances,
that the besiegers cannot avail themselves of the most advantageous
situations for the first batteries. There are four situations from
which the defences of any face may be destroyed; but not from all
with equal facility. The best position for the first batteries, is
perpendicular to the prolongation of the face of the work to be
enfiladed. If this position cannot be attained, the next that presents
itself is, on that side of the prolongation which takes the face in
reverse; and under as small an angle as possible. From both these
positions the guns must fire _en ricochet_. But if the ground, or
other circumstance, will not admit of either of these being occupied
by ricochet batteries, the battery to destroy the fire of a face must
be without the prolongation, so as to fire obliquely upon the outside
of the face. The last position, in point of advantage, is directly
parallel to the face. From these two last positions the guns must fire
with the full charges.
The second, or breaching batteries at a siege, are generally placed
on the crest of the glacis, within 15 or 18 feet of the covert way;
which space serves as the epaulment: but if the foot of the revetment
cannot be seen from this situation, they must be placed in the covert
way, within 15 feet of the counterscarpe of the ditch. These batteries
must be sunk as low as the soles of the embrazures, and are in fact but
an enlargement of the sap, run for the lodgement on the glacis or in
the covert way. In constructing a battery on the crest of the glacis,
attention must be paid that none of the embrazures open upon the
traverses of the covert way. These batteries should consist of at least
four guns; and if the breadth between the traverses will not admit of
this number, at the usual distances, the guns must be closed to 15 or
12 feet from each other.
The mortars are generally at first arranged in battery, adjoining
the first gun batteries, or upon the prolongation of the capitals of
the works; in which place they are certainly least exposed. Upon the
establishment of the half parallels, batteries of howitzers may be
formed in their extremities, to enfilade the branches of the covert
way; and upon the formation of the third parallel, batteries of
howitzers and stone mortars may be formed to enfilade the flanks of the
bastions, and annoy the besieged in the covert way. In the lodgement on
the glacis, stone and other mortars may also be placed, to drive the
besieged from their defences. A great object in the establishment of
all these batteries, is to make such an arrangement of them, that they
mask the fire of each other as little as possible; and particularly
of the first, or ricochet batteries. This may very well be prevented
till the establishment on the crest of the glacis, when it becomes in
some degree unavoidable: however, even the operations on the glacis
may be so arranged, that the ricochet batteries be not masked till the
breaching batteries be in a great state of forwardness: a very secure
method, and which prevents the soldiers in trenches being alarmed by
the shot passing over their heads, is to raise a _Parados_, or parapet,
in the rear of the trenches, at such parts where the fire from the
besieger’s batteries crosses them. For further details on this subject,
and for the manner of constructing batteries, see the word _Battery_;
also the words _Ricochet_, _Breach_, _Magazine_, _Platform_, &c.