tract 34.
IN GUNNERY.
27 '
The object this dajr was again the effect of cork wads,and different degrees of ramming.
Ht.of
Powder
Mean
Veloc.
N os 2, 9 were without wads - - -
5-85
1472
3, 5, 7 with wads, not rammed - -
5-87
1418
6, 8 a wad, and very hard rammed 4’40
1451
10, 11, 12 awad, and moderately rammed 5-20
1427
13,14,3wadsoverpowderand 1 overball, and very hard rammed
4'45
1426
Mean of all----------
5-15
1444
Wt. of
Mean -
ball
Veloc.
N 0 ’ 3, 4 .
16 9
1463
" 5, 6, 7, 8, 9, 10 .
16 8
1456
11, 12, 13, 14 - - .
16 5
1417
Mean of all - -- -- -- -- -
16 7
1444
In this course the wads have no perceptible effect.
86. Tuesday, October 12, 1784 ; from 11 till’ 1.The weather fine and clear.
N°
Vibration of
Point
! Plugs |
Vaiues of
Veloc.
of
ball
gun
pend
struck
P
g
n
1
123
inches
in.
U>
inches
feet
2
208-
8T1
9
750-9
77-76
40-21
2047
3
425
219
86-0
9
752-3
77-78
40-21
2187
4
409
200
85-6
10
753-8
77-79
40-20
2011
5
152
8T1
7
755-2
77-81
40-20
1505
6
389
197
85-4
11
756-7
77-83
40-20
1994
1
412
204
85-7
8
758-1
77‘85
40-20
2062
8
40S
203
85-5
8
759-5
77-86
40*20
mean
206 l
2060
The first charge of powder was 8 oz, all the rest 16 oz ;the ball’s diameter 1-96 inches, and weight 16 oz 11 dr.