13-INCH LAND SERVICE. 10-INCH DITTO. 8-INCH DITTO. Greatest charge, 8 pounds powder. 4-1/2 pounds. 1 pound. Greatest range, 2,706 yards. 2,536 yards. 1,720 yards. WEIGHT OF LAND AND SEA SERVICE MORTAR. Inches. cwts. qrs. lbs. Inches. 13 Land service, Weight, 36 2 0 Length, 36·563 10 do. „ 16 2 0 „ 28·125 8 do. „ 8 2 14 „ 22·500 5-1/2 do. brass, „ 1 1 15 „ 15·104 4-2/3 do. do. „ 0 3 20 „ 12·713 13 Sea service, „ 100 1 14 „ 52·810 10 do. „ 52 0 0 „ 45·620 [Illustration] Carronades are a short description of ordnance without trunnions, but fastened by a loop under the reinforce. Their construction is materially different from that of guns. They have a chamber like a mortar, a part scooped out inside the muzzle, forming a cup, and they have also a patch on the reinforce. The name arises from the Carron Foundry in Scotland, the first of them having been cast there in 1779. The construction is considerably lighter than that of guns of similar calibre. Their principal use is on board ship; but they are sometimes used in casemates, or retired flanks of fortresses. The proportions of all guns to shot, will be found below; and in looking at this table, it will scarce be conceivable how such light guns can project such heavy shot. COMPARATIVE WEIGHTS OF GUNS AND SHOT.