-------------------+---------+--------+---------+------+-------+------ | | | Charge |Point |Extreme|Eleva- Nature of Ordnance.| Length. | Weight.| Powder. |Blank | Range.|tion. | | | |Range.| | -------------------+---------+--------+---------+------+-------+------ |ft. in. |cwt. qr.|lbs. ozs.|yards.|yards. |deg. 12-inch gun, with }| | | | | | hollow shot, }| 8 4 | 90 3 | 12 0 | 240 | 1,550 | 6 weight 112 lbs. }| | | | | | 10-inch, with } | | | | | | ditto, weight 86 } | 7 6 | 57 3 | 7 0 | 210 | 1,500 | 6 lbs. } | | | | | | Ditto | 8 4 | 62 1 | 8 0 | 250 | 1,400 | 5 Ditto | 9 4 | 84 0 | 12 0 | 325 | 1,700 | 5 8-inch gun, with }| | | | | | hollow shot, 48 }| 6 8-1/2| 50 0 | 7 0 | 210 | 1,300 | 5 lbs. }| | | | | | 8-inch ditto, } | | | | | | solid shot, 68 } | 8 6 | 60 0 | 9 7 | 340 | 1,500 | 5 lbs. } | | | | | | Ditto | 9 0 | 65 0 | 10 0 | 300 | 3,250 |15 Ditto, hollow shot | 9 0 | 65 0 | 12 0 | 370 | 2,920 |15 10-inch iron | | | | | | howitzers | 5 0 | 40 0 | 7 0 |2 deg.| 2,078 |12 | | | | 600 | | 8-inch ditto | 4 0 | 21 0 | 4 0 |3 deg.| 1,725 |12 | | | | 730 | | -------------------+---------+--------+---------+------+-------+------ [2] Length of time occupied in flight, 14 seconds, and 15-1/4 seconds. Mortars are intended for three purposes; firstly, to bombard a town, or injure the defenders’ artillery; secondly, to fire or overthrow the works, and to spread havoc and slaughter among the troops; thirdly, to break through the vaulted roofs of barracks and magazines which are not bomb-proof, or, in other terms, are not strong enough to resist the fire.