248 Mr. Thompson’s Experiments 
diftance, and I was unwilling to expofe any part of the appa- 
ratus in the open air. 
But the fcreen was found to anfwer perfectly well the pur- 
pofe for which it was defigned, and it was continued during the 
remainder of the experiments, the paper being replaced every 
third or fourth experiment. 
The experiments continued . 
) 
00 
The 
1 
• 
< l 
G cj 
i co 
G-* 
a* 
X 
charge of 
0 h 
bC 
C V 
00 CU 
U O 
o - 
-U X r-i 
« ci CJ 
00 P 
O 
O 
00 
JG 
<d T 
jz - 
powder. 
CO 03 
-5 "5 
p 
rt — 
oj ’0 
O ^ 
^ <u 
q 
E J= 
0 — 
_G 9+h 
w O 
U s ^ 
G > 
2 0 ^ 
4-» CO 
, S— • 
G-l 
p 
Remarks. 
0 . — 
*r-. 
• 
4 -> 
45 T 
0 4 p 
"<3 40 
0 co 
. U 
JJ 
_ bp 
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bJ3 
a E 
*2 * $ 
0 
<L> 4-* 
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00 
> 
u. 
0 
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00 0 
> 
u c ^ 
-mo 
O 
N° 
Grs. 
Tn. 
Tn. 
[nches. 
Inches. 
Inches. 
Ft. in 
fee. 
r Not leathered; weight of the 
3 2 
165 
i 5 45 
0 
5.45 
6 3 > 
1 5.45 
339 
bullet and wad 603 grs. In exp. 
N° 32.nolefs than 40 large grs. 
33 
12,65 
8 39 
1 
of unfired powder were driven 
through the fcreen. 
34 
v 
7.9 
• • • 
15.45 
1217 
In thefe 6 experiments the 
35 
• • 
• • 
• 
7. 
60,25 
15.25 
1129 
bullets were leathered, 
36 
7.4 
62, 
i6 .3 
1161 
< 
and the powder was 
37 
• • 
• • 
T 0 
8, 
61, 
i7.9 
1277 
lighted by the valve- 
; 33 
290 
2,6 
2,6 
9 . 
5 8 . 6 
2 3.5 
H 97 
vent. 
39 
24.8 
a • 
^ The pend. N° 2. ruined. 
The bullets were now put naked into the piece, and the 
powder was lighted by the port vent-tube (u, fig. 3 ) and fome 
little improvement was made in the ffeel edges b etween which 
the ribbons pafied that ferved to meafure the afcending arcs of 
the pendulum and of the recoil, by which means the friblion 
was leflened, and the ribbon was prevented from twilling or 
entangling itfelf as it was drawn out. 
S 
jdpparaiu 
