MINUTES OF PROCEEDINGS OF 
240 
The following is a statement of the individual effect of each piece of ord¬ 
nance, in explanation of the first point. 
Rounds that 
Rounds fired. 
took effect. 
Proportion. 
24-pr. 
. 217 . 
53 . 
. — £ 
8-in. howitzer 
270 . 
81 .. 
. — £ 
68-pr. carronade.. 
„ 320 . 
.... 112 . 
. + * 
8-in. mortar . 
. 180 . 
56 . 
. — £ 
10-in. howitzer .. 
. 180 . 
.... 75 . 
. + 1 
1167 
377 
From this it appears that in individual effect, the 68-pr. carronade and 
10-in. howitzer have performed best. 
The second and third points will be best explained by the table annexed. 
4 Abstract of effect against the wall of a fortress according to Carnot's 
plan, classed to shew the practice at different ranges and elevations. 
At 400 yards. 
At 500 yards. 
10° or under. 
15° 
10 
0 or under. 
15° 
3 <3 
1 
No. of rnds. 
* . 
No.of rnds. 
M ■ 
No. 
of rnds. 
M 
No.of rnds. 
"n £- 
| go 
-M . 
g §< 
Ordnance. 
£ 
4 
is 
o 
4 
is 
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S3 2 
8 o 
11 
4 
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13 
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£.2 
4 
is 
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o 
3 
& 
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3J 
0 0 
11 
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a 
o 
13 
& 
0 
3 s 
S3 2 
0 Jr 
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3 2 
—v. 
0 C3 
1 i 
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5 
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24-pr. 
33 
25 
49 
107 
1 
xbf 
5228 
30110 
4 
■57 
217 
5 
8-in. liow.,.. 
40 
42 
28 
110 
11 
tV 
"s 
14 
18 
30 
6 
i" 
36 
i 8 
16 
60 
24 
17 
29 
70 
9 
A 
270 
26 
68-pr. carr. 
46 
46 
48 
140 
8 
t¥ 
15 
29,26 
70 
10 
i 
1616 
8 
40 
"2 
20 
26 
21 
23 
70 
11 
X 
320 
31 
8-in mortar. 
15 
10 
15 
40 
26 
2311 
60 
14 
1411 
15 
40 
16 
12 
12 
40 
8 
X 
180 
22 
10-in. how. 
14 
13 
3 
30 
14 
26 20 
60 
16 
i 
18 22 
20 
60 
"6 
s 
4 
14 
12 
30 
10 
i 
180 
32 
148 
136 
143 
427 
20 
aY 
63 
92 65 
220 
46 
X 
136 85 
89 310 
12 
aV 
70 
84 
76 
210 
38 
A 
1167 116 
At 10°. 
At 15°. 
At 10° 
At 15°. 
‘ 
Of 427 rounds fired, 
' 
Of 
220 
rounds 
r 
Of 
310 
rounds 
Of 
210 
rounds 
136 took effect, being 
fired, 92 took effect 
fired, 85 took effect 
fired, 64 took effect 
less than £. 
on wall, being more 
on wall,being rather 
onwall,being rather 
than # 
less than #. 
more than 
Of the same number 
Of the same num- 
Of the same num- 
Of the same num- 
of rounds (427) fired, 
ber of rounds (220) 
ber of rounds (310) 
ber of rounds'(210) 
only 20 struck the wall 
fired, 46 struck the 
fired, only 12 struck 
fired, 38 struck the 
12 ft. 
from top, being 
wall 12 ft. from top. 
the wall 12|ft. from 
wnll 12 ft. from top, 
less than 
5T- 
being 
more than 4. 
top, being more than 
being 
rather 
less 
aV 
| than 
5. By the comparison of fire from 400 and from 500 yds. in the fore¬ 
going table, it is found that the former range is preferable to the latter, and 
with regard to the best angle of elevation to be used 15° has greatly the 
advantage over 10° at 400 yds., and is something better than the smaller 
angle at 500 yds., but with respect to the number of shot striking 12 ft. 
from the top, the angle of 15° is at both ranges far superior in effect. 
