TRACT 34.
IN GUNNERY.
19
rr
of the gun with the 8 oz charge, and so the fluid has lesstime to escape in.
78. Thursday, September 16, 1784,
\
To try the effect of firing the charge of powder in different
parts of it.
N°
Vibration of
Point
struck
V)
ifc
3
cu
Values o
Veloc.of thebull
gun
pend
p
s
n
1
347
160
88-0
4
668-3
76-50
40-27
1388
2
348
161
87-8
7
669-4
76-52
40-27
1387
3
353
165
88-5
6
670-6
76-54
40-27
1413
4
350
161
87-5
6
671-8
76-57
40-27
1398
5
346
157
87-3
5
672-9
76-59
40-27
1369
6
352
159
87-2
5
674-0
76-61
40-27
1390
The powder 4 oz; ball’s diameter, 1-96 inches; andweight 16 oz 9 dr.
The Gun was n° 3 ; { its weight 500 lb.
The Pendulum as left yesterday.
The mean value of i, or point struck, these 3 days, 89 - 03.
Powder Recoil Mean veloc.
wt ht gun of the ball
4 3T - - 34-9 - - 1391
The cartridge of n os 1, 2, and 4 was fired at the fore part;n° s 3 and 5 behind ; and n° 6 in the middle : but there doe*not appear to be any difference among them.
C 2