Gun-powder , Ice* 
Weight 
of the 
bullet. 
Velocity of the bullet 
4 ■—> 
A£tual. Computed. 
Difference, 
CpTleaive 
prelfure. 
pad exp. 
2352grs c 
812 
©0 
i ,0000 
9 1 ft 
*754 
s 93 
94O 
- 4 / 
0,9020 
90th 
1184 
IOI7 
1145 
- 128 
0,7897 
:89 th 
603 
1224 
1604 
- 3 80 
0,5825 
88th 
600 
I24O 
1608 
- 368 
°?5949 
87 th 
354 - 
1288 
2093 
- 805 
0,3778 
86 th 
251 
143° 
2486 
- 1056 
0,3310 
85th 
90 
2109 
4151 
- 2042 
0,2581 
In the following figure let AB reprefent the axis of the piece, 
and AP the length of the fpace filled with powder ; and at the 
& 
o 
B 
.. . j.* 1 ’ 
point P let the perpendicular PH be erected, upon which let PL 
and PM be taken from P towards H of foch magnitudes that 
while PL expounds the uniform force of gravity, of the weight 
of the bullet, PM fhall be as the force exerted by the powder 
Vo l * LXXL T t upon 
