THE KOYAL AETILBEEY INSTITUTION. 
165 
Table III. 
SHOWING THE RESULTS OE EXPERIMENTS TO TEST THE PERCUSSION EUZES OE THE SERVICE, 
ARRANGED ACCORDING TO CALIBRE. 
Nature of gun. 
Charge. 
Nature of fuze. 
No. of 
rounds. 
Blind. 
Burst. 
Total failed. 
Eemarks. 
Good. 
Pre¬ 
mature. 
lbs. 
110-pr. Armstrong 
12 
Service pillar, E.L. 79 P... 
17 
0 
8 
9 
9 
a . 
10 
99 99 99 • • • 
10 
4 
5 
1 
5 
9 
99 99 99 ••• 
10 
6 
5 
0 
6 
a .. 
12 
Service pillar, E.L. 98M... 
30 
3 
27 
0 
3 
6 
9 
7 
2 
0 
7 
» 
99 . 
12 
Service pillar, E.O.C.P. ... 
45 
6 
36 
3 
9 
a 
a •••••• 
9 
99 99 99 
5 
0 
5 
0 
0 
w 
a '“••• 
6 
99 99 99 ••• 
3 
3 
0 
0 
3 
a 
» •••••• 
2 
99 * 99 99 ••• 
2 
2 
0 
0 
2 
12 
Sensitive pillar.. 
16 
2 
11 
3 
5 
tt 
6 
18 
6 
12 
1 
6 
tt 
99 •••••• 
2 
9X 99 •••••••••••••*. 
2 
2 
o 
o 
2 
it 
it 
99 •••••• 
» .. 
12 
Screw percussion. 
15 
10 
5 
0 
10 
2 
2 
2 
0 
o 
2 
70-pr. Armstrong... 
9 
Service pillar, E.L. 79P... 
3 
0 
3 
0 
0 
)) . 
9 
Service pillar, E.L. 98M... 
3 
0 
3 
0 
0 
J) 
99 
8 
99 99 f9 
12 
0 
12 
0 
0 
99 
yy «m.m 
9 
Pettman, S.S. 
12 
4 
8 
0 
4 
40-pr. Armstrong... 
5 
Service pillar, E.L. 79P.... 
11 
1 
10 
0 
1 
a 
tt . 
5 
Service pillar, E.L. 98M.,. 
20 
7 
13 
0 
7 
ti 
yy mm.. 
2 
99 99 99 ••• 
6 
2 
4 
0 
2 
it 
it •»••»• 
2 
Service pillar, E.O.C.P. ... 
3 
1 
2 
0 
1 
n 
tt ...... 
1 
99 # 99 99 ••• 
1 
1 
0 
0 
1 
5 
Sensitive pillar . 
30 
0 
30 
o 
o 
6 
Screw percussion .. 
17 
4 
13 
o 
4 
1 
6 
3 
2 
o 
3 
2 
Sensitive pillar......._.... 
5 
1 
4 
o 
i 
” 
1 
4 
4 
0 
o 
X 
4 
it 
it 
99 .. 
1 
Pettman, S.S . 
3 
3 
0 
0 
3 
20 -pr. Armstrong... 
2 
Service pillar, E.L.79P.... 
6 
1 
5 
0 
1 
99 
99 .. 
2 
Service pillar, E.L. 98M... 
15 
5 
10 
0 
5 
10 -in. gun 
12 
Pettman’s L.S. 
6 
4 
2 
o 
4 
8 -in. „ 
8 
7 
7 
0 
o 
7 
68 -pr. „ 
16 
99 99 
20 
7 
13 
o 
n 
32-pr. „ 
8 
99 99 
a a . .. 
11 
4 
7 
0 
t 
4 
11. From the foregoing Table it appears that the action of the 
percussion pillar fuzes of the service is not as satisfactory against earthwork 
as could be desired. The Committee have annexed to Table II. their 
remarks against each fuze in detail. 
12. The large number of premature bursts with the 110-pr. gun induced 
the Committee to institute a special inquiry as to its cause. For this 
purpose the gun was fired with cartridges made up of different lengths, the 
space in the powder-chamber being left in some cases between the cartridge 
and the projectile, in others between the cartridge and the vent-piece, while 
in some it was filled up with a wooden disc placed at the base of the 
projectile.. None of these precautions had the effect of removing the liability 
to this accident, as long as full charges were used; but a reduction of the 
charge to 9 lbs. appeared to remove it. The accident was confined to fuzes 
