TRACT 34,
IN GUNNERY.
383
Mean recoil of gun and velocity of ball:
Powder
Recoil
Veloc.
6 -
- 22-6
- - 1448
8
26-9
- - 1561
10 -
30'2
- - 1618
12
- 33'3
166!)
14 -
- 37-4
- - 1662
. 16
38-0
- - H>37
18
39-5
- - 15.98
20
- 42'7
- - 1639
67. Thursday, September 30, 1783; from 10 p.m. till 1 \ a. m.Fine, clear, and warm weather.
Barometer 30-25; Thermometer 64° at 10 a. m.
Powder
Ball’s
Vibration of
Point
V)
Values uf
Viloc.
N°
wt
ht
Wt
gun
pend
struck
£
i>
1 S
n
ball
oz
inch
oz dr
inches
inches
inches
ine
lb
indies
feet'
r
2
1-9
2’4
2
2
1-9
2’6
340
7-1
16 14
27-5
19-4
89'6
6
669-0
77-46
40-19
1383
4
12
8-4
16 14
31-9
20-4
88-7
6
670-3
77-48
40-19
1472
5
8
5-8
16 14
25-3
18-7
88-8
6
671-6
77*51
40-19
1351
6
14
9-3
16 14
32-7
19‘4
88-9
7
672-9
77-53
40-19
1403
7
6
4-6
16 14
21-6
18-5
90-3
6
674-3
77-55
40-19
1320
8
10
6-9
16 14
27-5
19-8
91-2
7
675-6
77-58)40-19
1403
9
12
8-3
16 14
29-5
19-9
92-2
5
677-0
77-60140-18
1398
10
8
5-7
16 14
25-3
18-9
90-2
6
678-3
77-62
40-18
1360
11
14
9-6
16 14
32-6
19-7
91-2
6
679-6
77-65
40-18
1405
12
6
4-4
16 14
21-9
18-0
87-0
7
680-9
77-67
40-18
1349
13
10
6-9
16 14
28-7
18-8
80-5
7
682-3
77-69
40-18
1420
14
12
8-4
16 14
31-7
20-0
87-9
6
683-7
77-71
40-18
1490
15
8
6 - 0
16 14
26-4
19-4
88'0
7
685-0
77-74
40-17
1447
16
14
9-3
16 14
32-2
18-4
86-5
7
686-4
77-76
40-17
1399
17
6
4-3
16 14
21-7
17'9
89-2
5
687-8
77-78
40-1 7
1323
The GuNn° 1.—The vent blew a little, though the gunwas never very warm.