upon Gun-powder, &c. 
* 4 ? 
General table of the experiments . 
la the two fir ft experiments the barrel was fixed to a carriage 
(that has not been defcribed) which, together with the barrel 
and rods by which it was fufpended, weighed only 23J. 
Length of the bore of the piece 43,5 inches. 
Weight of the bullet 580 grains. 
The pendulum, N* 1. 
Order of the trxpe* 
riments. 
The 
charge of 
powder. 
Vent from the bot- 
tom of the charge. 
0 
Chord of the amend- 
ing arc of the pen- 
dulum. 
The bullet llruck the 
target below the axis 
of the pendulum. 
| Chord of the arc of 
the recoil. 
Velocity of the 
bullet. 
Remarks. 
Weight. 
1 Height. 
N° 1 
2 
Grs* 
In. 
In. 
Inches. 
Inches. 
In. 
Ft.in 
Sec. 
Firft day. 
208 
i,8 
O, 
>5 
I 3> 2 
H>5 
64.5 
• • • 
33.5 
3 6 >5 
1267 
1 399 
This gun carriage being found to be too light, the other, 
defcribed y and reprefentedfig. 8, was fubftituted in the room of 
it. 
2 L 
Vol. LXXL 
Order 
