There being two sizes of grape-shot, and one of musket-balls, we have three kinds of canister-shot calculated to reach at different distances.

The three sizes of shot are frequently mixed in the same canister.

This projectile is particularly effective against lines of infantry and cavalry, when the distance is short.
The _grape-shot_ is composed of small balls arranged round an upright pin attached to a plate of wood or iron.

The concave cast-iron plate is preferable, as it increases the range of the shot.

The balls are covered with canvass, and thoroughly confined by a quilting of strong twine.
This shot is used for the same purposes as the canister.
_Light_ and _fire-balls_ are formed of an oval case of sacking, filled with combustible matter, and attached to a culot of cast-iron.