. Collier's new encyclopedia : a loose-leaf and self-revising reference work ... with 515 illustrations and ninety-six maps. ling force is gas. This definition of artil-lery excludes the mechanical devices bywhich, in the days of Archimedes andthe Romans, missiles were projected toa considerable distance by mechanicalmeans as the ballista. The discovery of A ROMAN DEVICE FOR SHOOTING FOURARROWS AT ONCE fortifications; a train of artillery is acertain number of pieces of cannonmounted on carriages, with all theirfurniture fit for marching.. ROMAN CATAPULT gunpowder in the 13th century madepossi
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. Collier's new encyclopedia : a loose-leaf and self-revising reference work ... with 515 illustrations and ninety-six maps. ling force is gas. This definition of artil-lery excludes the mechanical devices bywhich, in the days of Archimedes andthe Romans, missiles were projected toa considerable distance by mechanicalmeans as the ballista. The discovery of A ROMAN DEVICE FOR SHOOTING FOURARROWS AT ONCE fortifications; a train of artillery is acertain number of pieces of cannonmounted on carriages, with all theirfurniture fit for marching.. ROMAN CATAPULT gunpowder in the 13th century madepossible the engines of destruction thatto-day are the chief reliance of armies.Several crude cannon were used at thebattle of Crecy in 1346. They were alsoemployed by the troops that Joan of Arcled to the siege of Orleans. Once the