164 
MINUTES OF PROCEEDINGS OF 
Table II. 
SHOWING RESULTS OF EXPERIMENTS TO TEST PERCUSSION EUZES. 
Burst 
E> 
1 
c3 
a 
a 
CD 
£ 
£ 
8 
9 
■ 6 
1 
, 5 
... 
3 
... 
.10 
6 
5 
i ... 
3 
i 27 
! 2 
3 
12 
r 13 
! 1 
,10 
, 10 
, 6 
5 ... 
. 2 
5 26 
5 
3 
. 6 
1 
. 2 
2 6 
2 
510 
2 ... 
1 
. 30 
L 4 
1 ... 
1 2 
3 5 
3 3 
2 ... 
L 8 
3 2 
1 8 
3 ... 
3 5 
7 ... 
1 7 
1 8 
1 2 
Nature of fuze, and of 
earth fired at. 
Service pillar, marked 
R.L. 79. Shell fired- 
against natural earth. 
Do. do. fired 
artificial earth 
Service pillar, marked 
R. L. 98 M. Fired [ 
against natural earth .) 
Do. do. fired against] 
artificial earth ......... 1 
l 
110 prA* 
i) 
70-pr. A 
40-pr. A 
20-pr. A 
40-pr. A 
110-pr. A 
40-pr. A 
110-pr. A 
70-pr. A 
40-pr. A 
20-pr. A 
Service pillar, marked \ 
E. O. C. P. Fired < 
against natural earth. / 
Do. do. fired against J 
artificial earth."1 
Sensitive pillar fuze/'] 
made by Sir W. Arm¬ 
strong specially for J> 
this occasion. Fired 
against natural earth.J 
Do. do. fired 
artificial earth 
Nature 
of 
gun. 
lbs, 
12 
10 
9 
9 
5 
2i 
110-pr. A 
}} 
40-pr. A 
110-pr. A 
40-pr. A 
110-pr. A 
» 
110-pr. A 
if 
40-pr. A 
Screw percussion fuze' 
(being the service per¬ 
cussion fuze C fitted 
to screw into the 
shell). Fired against 
natural earth . 
Do. do. fired against \ 
artificial earth.1 
Pettman S.S. fuze. Fired ( 
against artificial earth { 
Pettman L.S. fuze. Fired ( 
against natural earth, j 
Do. do. fired against | 
12 
6 
12 
6 
21 
5 
artificial earth. 
110-pr. A 
12 
40-pr. A 
5 
110-pr. A 
12 
ii 
2f 
40-pr. A 
5 
„ 
H 
70-pr. A 
9 
40-pr. A 
li 
68-pr. ... 
16 
8-in. gun 
8 
32-pr. ... 
8 
68-pr. ... 
16 
lOin.gun 
12 
QD O 
|s 
3 o 
"9 
«!Oh 
lbs. 
105-4 
105-4 
105-4 
69-5 
40-5 
21-4 
40-5 
105-4 
40-5 
105-4 
105-4 
69-5 
69 5 
40-5 
40-5 
21-4 
105-4 
105-4 
105-4 
40-5 
105-4 
105-4 
40 5 
105-4 
105-4 
105*4 
105-4 
105-4 
40-5 
40-5 
40-5 
105-4 
40-5 
105-4 
105-4 
40-5 
40-5 
69-5 
40-5 
49 
23 
49 
84 
ft. 
982a 
9385 
8755 
9975 
995 a 
966a 
995a 
7095 
7186 
982a 
7096 
9975 
9445 
995a 
7185 
960a 
982a 
8756 
7095 
7186 
982a 
4236 
4606 
982a 
7096 
982a 
7096 
4236 
995a 
7186 
4606 
982a 
995a 
982a 
4236 
995a 
4606 
9976 
4606 
9125 
7856 
8006 
9125 
7436 
Results. 
El 
This fuze is unfit for use with the 
110-pr. Armstrong gun, as 
from some cause which is as 
yet unexplained, it is liable to 
explode the shell prematurely. 
In all other calibres it is a good 
fuze for use against earth¬ 
works when the striking ve¬ 
locity is not less than 900 ft. 
This seems a good fuze for use 
against earthworks when the 
striking velocity is not less 
than 900 ft. It has the great 
^ advantage of being free from 
liability to premature explo¬ 
sions. 
This fuze might be used against 
earthworks when the striking 
velocity is not less than 900 ft .; 
but it is not so good a fuze as 
the pillar fuze marked R.L. 
98 M, being more liable to 
premature explosion. On the 
present occasion also, not¬ 
withstanding the greater sen¬ 
sitiveness of the phosphorus 
composition, there was a larger 
proportion blind. 
The action of this fuze is too un¬ 
certain for a service fuze. It 
is the only fuze which pro¬ 
duced a premature explosion 
with so low a charge as one- 
sixteenth. 
This fuze is not so good for use 
• against earthworks as the 
pillar fuze R.L. 98 M. 
- This fuze is not sufficiently sen- 
£ sitive for use against earth- 
' works. 
This fuze is not sufficiently sen¬ 
sitive for use against earth¬ 
works. 
* Armstrong. a=Velocities observed at 1000 yds., and reduced to 1060 yds. 
5=Velocities calculated for 1060 yds. 
