THE ROYAL ARTILLERY INSTITUTION. 
225 
utilizing their old materiel, but not obtaining ordnance that will wear like 
wrought-iron or steel guns. The American 3-inch gun is a solid forging, 
and as it is so small, the metal is probably sound. 
Let us now compare the siege and garrison guns. 
Rifled Siege or Garrison Ordnance. 
Projectiles. 
Nature of gun. 
Weight of 
gun. 
Charge. 
Shot. 
Shrapnel 
or 
Common shell. 
segment. 
Weight. 
Burster. 
cwt. 
lbs. oz. 
lbs. oz. 
lbs. oz. 
lbs. oz. 
British:— 
B.L. 7-in. (heavy) 
81 
8 
90 0 
98 0 
83 12 
6 4 
1 
s 
6 
ns 
73 
K) 
90 0 
98 0 
83 12 
6 4 
M. L. 64-pr. 
65 
i 
64 0 
62 10 
60 0 
4 8 
B.L. do. (wedge) 
61* 
II 
64 0 
61 14 
60 0 
4 4 
B.L. 40-pr.... 
{ ik) 
II 
41 3 
39 0 
38 5 
2 8 
American:— 
5 70 0 7 
(.100 0 ) 
- 
100-pr. 
86J 
\ io 
... 
100 0 
# 
30-pr. 
37! 
TaJ 
30 0 
... 
25 0 
t 
French. 
56 
Is 
o o 
... 
... 
... 
Spanish .. 
62 
* 
61 0 
... 
... 
... 
Prussian 
51! 
tV 
76 8 
... 
59 13 
2 0 
As our guns are of wrought-iron, but those of the Americans, French, 
and Spaniards are merely hooped cast-iron guns,J there can be but little 
question as to which would prove the safer and more enduring pieces. The 
Prussian gun in the table is a bronze gun, but they have also some steel pieces. 
The formidable effects produced by the shells of the 40-pr. and 7-inch 
guns (owing to their large bursting charges) have been amply shewn in our 
own experiments. The 7-inch guns were intended as naval pieces, and their 
* Bursts about 8 lbs. 
f Burster ratlier over 1 lb. 
X American, hooped with wrought-iron; French and Spanish with steel. 
