TRACT 34<
IN GUNNERY,
361
51. Saturday, July 19, 1783 ; from 9 till 3.A fine and warm day.
Barometer 30 , 12, Thermometer 70° at 9 o’clock.
N°
Pow-
der
Ball’s
Vibration of
Point
struck
Plugs
Values of
Veloc.
ball
wt
diam
gun
pend
p
S
n
oz
oz dr
inches
inches
inches
inches
in.
lb
inches
feet
1
2
2-3
2
2
2'4
3
4
5'8
4
4
5-8
5
4
5-8
6
4
16 13
1’96
15-9
14-8
89’8
5
674-0
77-51
40-19
1063
7
4
16 13
1-96
16'3
15-4
89’8
5
675-3
77-54
40-19
1111
8
4
16 13
1-96
16-4
15'8
90-2
5
676-6
77-56
40-19
1137
9
4
19 13
1’96
163
15'4
89-3
5
677-9
77-58
40-19
1122
10
2
16 13
1 96
9 8
10-7
89-1
3
679-2
77-61
40-19
783
11
2
16 13
1-96
9’9
ll’O
89-5
2
6 80-5
77-63
40-18
803
12
2
16 13
l’96j 10" 1
11-1
90-3
3
681-8
77-66
40-18
805
IS
2
2’55
14
2
2-55
15
2
16 IS*
1-96,ll’l
12-6
88’8
3
683-1
77-68
40-18
930
16
2
16 13£
1-96 107
12’0
894
3
684-4
77-71
40-18
881
17
2
16 124 -
1-96 11-0
12-3
89-8
3
635-7
77-73
40-18
901
18
2
16 124-
1-96 10-8
11-9
89-0|
(687*0
77-76
40-18
881
Of the plugs every 10 inches weighed 11 ounces.
Length of the charge of 2 oz was 1*7 ; and that of 4 ozwas 3-2.
The Gun was n° 1 for the first 12 n“, and n° 3 for therest; in order to complete the comparison between thesetwo guns with 2, 4, 8, and 16 oz of powder. The radius
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