TRACT 34-.
IN GUNNERY.
365
53. Monday, July 28, 1783 ; from 10 till 2.
A very hot day.
Barometer 29-74 ; Thermometer 77° at 10 A. M.
N°
Pow
der
Bali’s
Vibration of
Point
struck
V)
bp
PU
Values of
Veloc.
ball
wt
diam
gun
pend
P
5
n
oz
inches
1
2
2-6
2
2
2-45
3
2
2-4
4
2
2-45
5
2
2-7
6
2
2-65
7
2
2-6
8
4
6-3
9
4
6-35
10
4
6-35
11
8
13-8
12
8
14-0
13
8
14-1
14
16
28-1
15
16 1
27-9
I
2 oz
4 oz
8 oz
16 oz
Mean length of charge
1-9
3-3
6-2
11-0
Mean recoil of gun -
O
2-65
6-33
13-97
28-0
Ditto with greater wt 2-48
The Gun n° 4.-Its weight in first 4 rounds 1003
Ditto in all the rest - - 917
Other circumstances as before.
The gun was very hot before firing, with the heat of thesun. But heated little more with firing. It was hottest atthe muzzle, where the hand could not long bear the heatof it.
V