TRACT 34.
IN GUNNERY, 1789.
131
measured inches diameter. The gun was charged with 8,16, and 24 ounces of powder, and was placed at 80 feet dis-tance from the pendulum, which was struck by the ballswith the following medium velocities, viz.
Powder, ounces ... 8, 16, 24,
Velocities, feet . . . 703, 99 0, 1222.
From which, the same law of the charges and velocities, asformerly noticed, again takes place, viz, that the velocity isproportional to the square root of the charge of powder.
A great variety of experiments were also made with the3-pounder gun, to obtain the extent of the ranges; but theseturned out so exceedingly various and irregular, that no cer-tain deductions can be drawn from them. The results andmediums of them, however, such as they were, are as below.
N®
Eleva-
tion
Pow-
der
Time
flight
Range
Angleof fall
degr
oz
secs
yards
degr
1
20°
8
12
1600
2
30
8
22
2560
3
45
2
16
1290
4
45
4
221
1950
5
45
8
2400
6
45
16
2700
61°
7
45
24
2800
8
75
8
1900
9
75
16
2000
10
75
24
2200