+--------------------+----------+----------+----------+ | | Whole | Half | Quarter | | | Barrels. | Barrels. | Barrels. | | +----------+----------+----------+ | | Ft. In. | Ft. In. | Ft. In. | +--------------------+----------+----------+----------+ |Depth | 1 9.61 | 1 5.13 | 1 2.25 | |Diameter at top | 1 3.61 | 1 0.37 | 9.35 | | ” at bulge | 1 5.36 | 1 2. | 10.71 | | ” at bottom | 1 3.51 | 1 0.31 | 9.41 | +--------------------+----------+----------+----------+ The whole barrels are made to contain 100 pounds, and the half barrels 50 pounds of powder; but of late only 90 pounds have been put into the barrels, and 45 into the half barrels; which, by leaving the powder room to be shifted, preserves it the better. _Budge Barrels_ contain 38 lbs. Weight of barrel—copper hooped—10 lbs. ” ” hazle hooped—6 Length of barrel 10½ inches. Diameter 1 foot 1 inch. _BASKETS._—Ballast, ½ bushel—weight, 5 lbs. Diameter, 1 foot 6 inches—length, 1 foot. _BATTERY._—_Dimensions of Batteries._ 1. _Gun Batteries._—Gun Batteries are usually 18 feet per gun. Their principal dimensions are as follow: _Ditch._—Breadth 12 feet. Depth 8 NOTE. These dimensions give for a battery of two guns 3456 cubic feet of earth; and must be varied according to the quantity required for the epaulment. _Epaulment._—Breadth at bottom 23 feet. ” at top 18 Height within 7 ” without 6 ft. 4 in. Slope, interior ²/₇ of height. ” exterior ½ of height. NOTE. The above breadths at top and bottom are for the worst soil; good earth will not require a base of more than 20 feet wide, which will reduce the breadth at top to 15 feet; an epaulment of these dimensions for two guns will require about 4200 cubic feet of earth, and deducting 300 cubic feet for each embrazure, leaves 3600 required for the epaulment. In confined situations the breadth of the epaulment may be only 12 feet. _Embrazures._—Distance between } 18 feet. their centers } Openings, interior 20 inches. ” exterior 9 feet. Height of the sole above the platform 32 inches.