24 Prs.——At 1000 rounds per gun. Mortars, howitzers, and stone mortars, at 800 rounds per piece of ordnance. DURTUBIE. The following proportion of artillery and ammunition was demanded by a very able officer, for the intended siege of Lisle, in 1794, which place was thought susceptible of two attacks. 64—24 Prs. with carriages complete, at 50 _round shot_ per gun, per day, for the whole siege; half of them _en ricochet_, with 2lbs. of powder; the other half with the full charge of 8lbs. _Case_ and _Grape_ shot, at one round per gun, per day, of each: 6lbs. per charge. _Shells_ for guns, two rounds do. _Flannel cartridges_, for the case, grape, and shells. _Tin_ tubes for the case and grape. _Quill_ tubes for the round shot. _Spare_, ⅒. 28—10 Inch mortars, on iron beds, at 50 shells each per day, for the whole siege. 3lbs. of powder charge—2lbs. 10 oz. for bursting. _Pound shot_—100 to a charge; 50 rounds per mortar each day for 10 mortars 7 days; 2 lbs. of powder each. _Hand grenades_—25 to a charge; the same as the pound shot. _Carcasses, round_—1 per mortar, per day. 8— 8 Inch howitzers, on travelling carriages 30 _Shells_ for each per day, during the siege. _Case shot_—5 rounds per day each. _Carcasses_—1 per day each. _Powder_—1 lb. per charge; 1 lb. 14 oz. for bursting. 20—5½ Inch mortars, on wooden beds. 50 _Shells_ for each, per day, for the whole siege; charge 8 oz.—12 oz. for bursting. _Flannel cartridges_, for ⅓ the number of rounds. _Tin_ tubes in the same proportion. _Portfires_, ½ the number of rounds with tubes. _Fuzes_, ⅒ to spare. _Match_, 50 cwt. Spare carriages for 24 Prs. seven. 2 Devil carriages. 6 Sling carts. 6 Block carriages. 3 Forge carts. 3 Store waggons, with iron and coals. 3 Triangle gins, complete. 6 Laboratory tents. 2 Small petards. 4 Grates for heating shot. _Of the Arrangement of Artillery at a Siege._