upon Gun-powder , - &c. 
253 
In the feven following experiments the piece was fired with 
powder only. 
'1 
char 
pow 
4-> 
-C 
'5 
£ 
he 
ge of 
rder. 
4-1 
IS) 
’O 
£C 
Vent iroin the bot- 
tom of the charge. 
O 
Chord of the amend- 
ing arc of the pen- 
dulum. 
Chord of the arc of 
the recoil. 
Remarks. 
Grs. 
[n. 
(n. 
Inches, 
Inches. 
x 45 
*>3 
0 
— 
4,3 
^5 
IAS 
• • 

5,5 - 
■ 
— 
5,6 
290 
2,6 
. . 
— 
1 1,70 
437i 
3,9 
• * 
1 568 
6,7 
>7,5 
15,88 
The fcreen was taken away. 
C The whole furface of the target was befpat^ered 
\ with unfired grains of powder. 
« - • 
. . 
• • 
— 
0,9 
The pendulum was not obferved. 
a, 
x 
V 
V 
-C 
09 
a 
o 
Cw p 
o .p 
N° 
93 
94 
95 
96 
97 
98 
99 
In the following experiments N° 100. and N° 101. the bul- 
lets were not put down into the bore, but were fupported by- 
three wires, which being faftened to the end of the barrel pro- 
jefted beyond it, and confined the bullet in fuch a fituation that 
its center was in a line with the axis of the bore, and its hinder 
part was one-twentieth of an inch without or beyond the 
mouth of the piece. 
In experiment N° 102. the bullet was juft ftuck into the bar- 
rel in fuch a manner that near one-half of it was without the 
bore. 
2 M 
Vol. LXXI. 
All 
