| CHAPTER | | PAGE |
| I. | Tool-Making Animals | [9] |
| II. | The Anatomy of a Machine | [20] |
| III. | Machines for Making Machines | [42] |
| IV. | Counting Seconds | [57] |
| V. | Putting Rivers to Work | [75] |
| VI. | Liquid Levers and Gears | [94] |
| VII. | Air vs. Water | [109] |
| VIII. | Air Springs and Cushions | [126] |
| IX. | Power from Heat | [139] |
| X. | Burning Fuel in the Engine Cylinder | [155] |
| XI. | When Coal and Oil Are Exhausted | [171] |
| XII. | Invasion of the Sea | [182] |
| XIII. | Sliding, Rolling, Walking, and Creeping | [203] |
| XIV. | Invasion of the Sky | [219] |
| XV. | Helping the Farmer | [239] |
| XVI. | Machining the Earth | [251] |
| XVII. | From Fiber to Fabric | [268] |
| XVIII. | The Making of Paper | [289] |
| XIX. | Typesetting and Printing Machinery | [300] |
| XX. | Cast Iron, Wrought Iron, and Steel | [314] |
| XXI. | Animated Machinery | [326] |
| XXII. | Heat Vacuums | [345] |
| XXIII. | Engines of Destruction | [359] |
| XXIV. | Summary of Mechanical Progress | [376] |