236 
MINUTES OF PROCEEDINGS OF 
Table VI. 
Date. 
No. of rounds. 
| Elevation. 
70-pr. 
§0 
cj 
o 
3 sue 
f-1 etH 
9s 
*j 
Ranges. 
<D 
1 
w o5 
SUD 
S g 
r o g 
£3 q_, 
«o 
3 
Id 
<5 o 
'"o 1 b 
§| 
© u 
a 
J| 
S g 
S'S 
iT 
Min. 
Max. 
Mean. 
1863. 
° 
lbs. 
sec. 
yds. 
yds. 
yds. 
yds. 
yds. 
yds. 
February 9 . 
5 
8 
1-461 
4-06 
458 
612 
481 
19-0 
1-72 
0-14 
February 11. 
6 
10 
4-70 
514 
547 
537 
9-4 
1-80 
0-24 
February 9 . 
6 
12 
5-56 
545 
654 
616 
33-2 
1-72 
0-10 
do . 
5 
15 
7-23 
760 
905 
818 
42-6 
4-60 
0-40 
do . 
6 
8 
1-672 
4-22 
530 
578 
543 
14-0 
1-60 
0-32 
February 11. 
5 
10 
5-24 
648 
698 
665 
15-6 
1-32 
0-38 
February 9 . 
5 
12 
6-07 
725 
835 
791 
44-0 
2-44 
0-52 
do .. 
5 
15 
„ 
7-88 
948 
990 
969 
9-5 
5-80 
0-24 
Table VII. 
7-in. howitzer. 
1863. 
January 28. 
5 
8 
2-219 
4-16 
431 
515 
486 
29-8 
3-24 
0-12 
do . 
5 
10 
)} 
5-04 
571 
611 
599 
17-2 
5-52 
0-66 
do . 
5 
12 
)} 
5-75 
588 
664 
629 
28-8 
7-80 
0-64 
do . 
6 
15 
» 
7-46 
840 
912 
877 
20-2 
13-00 
0-48 
do . 
5 
8 
2-535 
4-42 
673 
597 
581 
6-0 
3-88 
0-62 
do . 
6 
10 
)} 
5-18 
604 
670 
636 
22-2 
5-48 
1-22 
do . 
5 
12 
}) 
6-32 
728 
841 
803 
30-6 
9-56 
0-84 
do . 
5 
15 
” 
8-08 
991 
1128 
1059 
63-2 
16-88 
0-82 
Table VIII. 
1863. 
7-in. mortar 
January 28 . 
6 
8 
1-879 
4-32 
485 
524 
607 
12-4 
2-92 
1-38 
do . 
6 
10 
9i 
5-23 
620 
654 
636 
11-4 
3-32 
3‘18 
February 4 . 
5 
12 
}J 
5 94 
642 
752 
696 
25-2 
6-04 
4-66 
do . 
5 
15 
: 
7-34 
794 
874 
836 
24-2 
3-84 
2-36 
January 28 . 
5 
8 
2-148 
4-60 
545 
611 
692 
18-4 
3-52 
3-44 
do . 
5 
10 
} 
5-30 
637 
712 
678 
30-2 
3-88 
3-60 
February 4 . 
5 
12 
)} 
6-34 
758 
832 
798 
24-4 
3-08 
2-42 
do . 
6 
15 
” 
8-02 
938 
1022 
977 
27-6 
4-28 
4-68 
8. The foregoing comparison takes no account of the difference in the 
velocity of the smooth-bore and rifle shells on striking, of the difference in 
their diameters, or of the aid to penetration afforded by the rotation of the 
rifle shell, when it strikes point foremost. According to the Trench experi¬ 
ments the resistance to an elongated projectile is only tioo-thirds of the 
resistance to a sphere (Didion, §177), and the penetration of a round shot and 
