\
TRACT 34.
IN GUNNERY.
23
The ball’s diameter 1'96, and weight alternately 16 oz10 dr and 16 oz 14 dr.
The Gun n° 1 , without the leads, weighed 384 lb.
The Pendulum the same as left hanging since the last day,This day was a continuation of the experiments with thelight gun, again to try if the velocity was altered. Butwithout effect. The means as' below :
Powder’s Weight
2 oz
4oz
6 oz
8 oz
- - - height
1-73
2’94
4-12
5-42
Recoil of gun
273
454
604
742
Velocity of ball 759
1086
1325
1472
The mean weight of the balls is 16 oz 12 dr.
The mean value of i, for the point struck, was 89‘3.
83. Tuesday, October 5, 1784; from 11 till 2.The weather fine and warm.
N°
Vibration of
Point
tn
Values of
V eloc.ofball
gun
pend
struck
bfi
C-
p
S
n
1
48
inches
ino
lb
inches
feet
2
206
152
89-0
5
721-9
77-35
40-23
1404
3
213
158
87-6
5
723-0
77-37
40-23
1463
4
208
163
91-S
7
724-1
77-39
40-23
1443
5
2,
158
91-0
6
725-2
77-41
40-22
1414
6
I
T
152
90’7
6
726‘4
77-43
40-22
1367
7
I
T
153
91-3
6
727-5
77-45
40*22
mean
1374
1411
The first charge of powder was 4 oz, all the rest 8 oz.The diameter of the balls was 1*96, the first weighed 16 oz10 dr, all the rest 16 oz 14 dr.
The Gun was n° 1 , with 687 lb of lead fixed to it, namely,433 |lb about the trunnions, and 253 jib lashed upon the upperside of the gun, close to, and before and behind the stem:these, with 384 lb for the gun and iron together, make inall 1071 lb.