The principal members of the Gun Club, President Barbicane, Major Elphinstone, the secretary Joseph T.Maston, and other learned men, held several meetings,at which the shape and composition of the projectile were discussed, also the position and nature of the gun, and the quality and quantity of powder to be used. It was decided: First, that the projectile should be a shell made of aluminum with a diameter of 108 inches and a thickness of twelve inches to its walls;and should weigh 19,250 pounds. Second, that the gun should be a Columbiad cast in iron, 900 feet long,and run perpendicularly into the earth. Third, that the charge should contain 400,000 pounds of gun-cotton,which, giving out six billions of litres of gas in rear of the projectile, would easily carry it toward the orb of night.
相关影视:靠谱的影视后期