TRACT 34,
IN GUNNERY.
377
2 ciz
4 oz
8 oz
Mean length of the charge -
1*8
3-1
- 5*7
Mean recoil with ball - -
10-35
17-17
26-80
Ditto without
2-67
6-10
13-63
Difference or c = - - -
7-68
11-07
13-17
Hence velocity by the recoil ■
846
1220
' 1452
Mean ditto by the pendulum
856
1239
1571
Difference, the gun less
10
19
119
Or nearly the part - - -
I
Tff’
I
6 ft
TT
63. Tuesday , September 16, 1783 ; from 12 till 2.The weather was rainy.—Gun n° 1.Barometer 29"9 ; Thermometer 64° at noon.
N°
Pow-
der
VibratioiT of
gun
1
2
3
4
5
6
7
89
10
11
12
13
14
15
16
17
1819
oz
2
2
2
4
4
4
8
8
8
12
12
12
12
16
16
16
20
20
20
23
2-5
2-35
5-25
5-05
5-4
11- 6511*9
12- 0517*319-318-717-125'323'324028-528-224-8
-
The last n" very uncertain; the tape entangled.
2 oz 4oz 8 oz 12 oz 16 oz 20 oz
Mean length of charge - - 1*9 3*2 5-6 8*2 106 13"2
Mean recoil, omitting n* 19, 2*38 5 - 23 1T9 18T 24-2 28-2