| | TO FACE PAGE |
| The Spirit of Time | |
| The Cave Man and the Moving Shadow | 16 |
| Time Telling in the "Land Between the Rivers" | 32 |
| The First Recorded Sun Dial | 40 |
| The Clepsydra, or Water Clock | 56 |
| Types of the Earliest Time Tellers | 64 |
| Galileo Discovering the Principle of the Pendulum | 72 |
| A Time Piece of the Middle Ages | 80 |
| Ancestors of the Watch | 88 |
| The First Pocket Time Piece | 96 |
| The "Nuremburg Egg," the First Real Watch | 104 |
| First Forms of the Watch | 112 |
| Sixteenth Century Watches | 120 |
| Late—In Spite of His Two Watches | 128 |
| Seventeenth Century Watches | 136 |
| The Swiss "Manufacturer" and a Craftsman | 144 |
| The First Yankee Clock Maker | 152 |
| "Grandfather's Clocks" | 160 |
| Eighteenth Century Watches | 168 |
| "Quantity Production" in 1850 | 176 |
| A Glimpse of a Giant Industry | 200 |
| Twentieth Century Watches | 208 |
| Time Telling in the Dark | 216 |
| Time Pieces Vital to Industry | 224 |
