S'RACT 34 .
IN GUNNjERY, 1791 .
139
181. Sept. 22, 1791.Barometer 30; Thermometer 60.
Fired the long 6-pounder,and also a light short one, againstthe above-mentioned pendulum, from the distance of 30feet, with charges of 3lb and 2lb of powder; the length ofthe bore of this light gun being 57'6 inches. From this time,the guns were not suspended like a pendulum, but placedon a ship-gun carriage, with trucks running on a level plat-form, and the recoil of the gun and carriage noted down.
3 O D
Eprouvette.
2 oz. 42{- chord
2 42-J
The pendulumoscillatedl21in 3 minutes. The first 4
shots were with the longgun ; the rest with the lightgun.
The ball’s diam. 3'56; wt.6lb l£oz.
N°
Pow-
der
Recoil
gun
Vibv
pend
Point
struck
Plug’s
wt
t
Values of
e
n
Velocityof ball
lb
inches
c
inches
oz
lb
inches
feet
,1
3
67
482
8T0
20
1662
75-70
40-33
1749
2
3
69
479
83-2
15
1669
74
33
1826
3
2
48
'431
S6T
16
1676
78
33
1596
4
2
49
456
87-5
16
1683
82
33
1669
5
3
83
445
82'8
63
1690
85
34
172Sd
6
3
72
437
.88-0
16
1700
89
34
1607
7
3
72
412
83-0
13
1707
93
34
1614
8
2
58
383
80-3
15
1714
97
35
1558
9
2
57
378
800
10
1721
76-00
35
1550
182. Sept. 24, 1791.
Barometer 29'98 ; Thermometer 60.
The following 4 rounds were fired against the pendulum,with the medium and the light 6-pounder guns, on a carriage,viz, the first two rounds with the medium gun, and the othertwo with the light one, both 5 feet guns, each round withIflb of powder, and at 30 feet distance from the same pen-