136
NEW EXPERIMENTS
TRACT 84.
177. July 21,1791.Barometer 29-89 ; Thermometer 67.
The pendulum having been repaired, and received a newcore, I attended the weighing and suspending it. It weighed1630lb, which being but 4lb less than before it was repaired,it may be presumed that its centres of gravity and oscillationare the same as ended with, on the 16th instant. Also sus-pended the medium 6-pounder gun, which was exactly the
same diameter as the long vweight, &c, were as below.
lb
Weight of gun alone 1173Ditto of iron work 248Ditto both together 1421
inches
Dist. centre of gravity 34-9Dist. axis of gun . 92‘2
Length of bore . . 56"6i
Diameter of bore • 3 '65
Vibration per minute 39—
one; and all its dimensionsj
Epr ouvette.
Oz Chord
Vers.
2 43
H
2 43
n
Discharged therounds.
following
Dist of the gun
30 feet.
Diam. of balls
3‘55 inc.
Wt. of ditto
6lb. l,'-oz.
N°
Pow-
der
Vibration of
Point
struck
Plugs
Wt
Values of
Veloe.
ball
gun
pend
p
g
n
oz
inches
oz
lb
inches
feet
1
32
719
404
82-5
9
1690
76-50
40-4
1586
2
32
716
412
84-6
18
1697
54
4
1585
3
24
648
401
85-9
22
1704
58
4
1527
4
24
388
85 - 6
18
1712
62
4
1490
5
24
615
371
85-8
26
1719
66
4 .
1430
6
16
501.
344
88-1
19
1726
70
4
1298
7
16
490
320
87-3
21
1733
74
4
1224
8
8
318
227
87-1
9
1740
78
4
874
9
8
323
232
886
15
1747
82
4
882
The Charges, oz. 32 24 16 8
Their Length, inc. 9'7 8‘37 6'75 5-4