| | |
{Bottom in.| .75| .50| 1.90| 1.90|
Size of | | | | |
{Rod in.| | | | |
{Nut { diameter in.| | | | |
{thickness in.| | | | |
{Bale in.| | | | |
Metal and thickness | | | | |
{Iron No.| | | | |
{Tin No.| XXD | XXD | IC | IC |
Balls | | | | |
{Number |162. |100. |39. |39. |
{Diameter in.| 1.30| 1.30| 1.30| 1. |
{Weight lbs.| 45. | 28. |12.5 | 5.85|
Weight finished lbs.| 50. | 30. |14.55| 7.75|
----------------------+------+------+-----+-----+

NOTE.--Bottom of XV-inch canister, of two thicknesses of oak, ash,
or beech, crossing each other; put together with wrought-iron
nails, clinched; spindle riveting on the bottom through a 3 inches
square plate, 1/4 thick; cast-iron hexagonal nut, with
wrought-iron bale.

For XI, X, and IX-inch, bottom-head one thickness of one-inch oak,
ash, or beech; spindle riveting on a plate 1-1/4 inches wide, by
1/4 thick, running across the grain the whole width of bottom,
with a rivet at each end of plate.

Top and centre heads of all made of white pine.

Iron cases to be well painted inside with red before filling.

94. Shot of the first class, or which do not exceed 0.18 of an inch
windage, are to be entirely black, and those of the second class,
having from 0.18 to 0.20 of an inch windage, to be marked partly
white. Each class is to be piled and kept separate from every other.
Both classes are to be considered and supplied as "serviceable shot;"
but are to be stowed separately on board ship, and the returns to the
Bureau are to show the number of each, respectively. The number of
those having more than 0.20 of an inch windage are to be reported and
retained until special orders may be given for their disposition. In
case any should be taken as the foundation for piling serviceable
shot, they are to be painted entirely white and their number returned
as unserviceable.

PILING OF BALLS.

95. To find the number of balls in a pile--Multiply the sum of the
three parallel edges by one-third of the number of balls in a
triangular face.

In a square pile one of the parallel edges contains but one ball; in a
triangular pile two of the edges have