| CHAPTER | | PAGE | | I. | How Peaceful Arts help in War | 17 | | II. | Gunpowder and its Modern Equivalents | 27 | | III. | Radium in War | 39 | | IV. | A Good Servant, though a Bad Master | 49 | | V. | Mines, Submarine and Subterranean | 61 | | VI. | Military Bridges | 75 | | VII. | What Guns are made of | 92 | | VIII. | More about Guns | 108 | | IX. | The Guns they use in the Navy | 120 | | X. | Shells and how they are made | 135 | | XI. | What Shells are made of | 146 | | XII. | Measuring the Velocity of a Shell | 159 | | XIII. | Some Adjuncts in the Engine Room | 164 | | XIV. | Engines of War | 169 | | XV. | Destroyers | 184 | | XVI. | Battleships | 191 | | XVII. | How a Warship is Built | 202 | | XVIII. | The Torpedo | 215 | | XIX. | What a Submarine is like | 223 | | XX. | The Story of Wireless Telegraphy | 240 | | XXI. | Wireless Telegraphy in War | 252 | | XXII. | Military Telegraphy | 264 | | XXIII. | How War Inventions Grow | 276 | | XXIV. | Aeroplanes | 284 | | XXV. | The Aerial Lifeboat | 297 | | Index | 313 |
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