_SHELLS_—_For Mortars and Howitzers.—Their Dimensions, Weight, &c._ +-------+-------------+-------+---------+--------+--------------+-------+ |Nature.| Weight. | Diam- | Powder | Powder | Diameter of |Thick- | | | | eter. |contained| for | Fuze Hole. |ness of| | | | | in |Burning.+-------+------+ Metal.| | | | | Shells. | |Outside|Inside| | +-------+-------------+-------+---------+--------+-------+------+-------+ | |Ct.qr.lbs.oz.|Inches.| lbs. oz.|lbs. oz |Inches.|Inches|Inches.| |13 Inch| 1 3 2 | 12¾ | 10 4 | 6 12 | 1.837 | 1.696| 2.05 | |10 ” | 3 9 | 9¾ | 4 5 | 2 10 | 1.57 | 1.45 | 1.575 | | 8 ” | 1 11½ | 7¾ | 2 12 | 1 14 | 1.219 | 1.127| 1.2 | | 5½ ” | 15¼ | 5¼ | 1 | 12 | 0.894 | 0.826| 0.822 | | 4⅖ ” | 8 | 4⅕ | 7 | 5 | 0.832 | 0.769| 0.653 | +-------+-------------+-------+---------+--------+-------+------+-------+ | Hand | 3 11| 3.49 | | | | | | | Gren. | 1 13| 2.77 | | 1½ | | | | +-------+-------------+-------+---------+--------+-------+------+-------+ | _French Shells, in French Weights and Measures._ | +-------+-------------+-------+---------+--------+-------+------+-------+ |Inches.| lbs. | | | |Lines |Lines | Lines.| | | | | | | Po. | Po. | | |12 Inch| 150 | 12 | 17 | 5 | 15 9 | 15 | 16 | |10 ” | 100 | 10 | 10 | 3 | 15 9 | 15 | 16 | | 8 ” | 43 | 8 | 4 1 | 1 | 12 | 11 | 10 | | 6 ” | 23 | 6 | 2 8 | 12 | 11 | 10 6| 10 | +-------+-------------+-------+---------+--------+-------+------+-------+ _Dimensions of Shells for Guns and Carronades made with an equal Thickness of Metal._