| [I]. | Gutenberg and the Printing Press | 9 |
| [II]. | Palissy and His Enamel | 42 |
| [III]. | Galileo and the Telescope | 53 |
| [IV]. | Watt and the Steam-Engine | 70 |
| [V]. | Arkwright and the Spinning-Jenny | 84 |
| [VI]. | Whitney and the Cotton-Gin | 96 |
| [VII]. | Fulton and the Steamboat | 111 |
| [VIII]. | Davy and the Safety-Lamp | 126 |
| [IX]. | Stephenson and the Locomotive | 140 |
| [X]. | Morse and the Telegraph | 168 |
| [XI]. | McCormick and the Reaper | 189 |
| [XII]. | Howe and the Sewing-Machine | 206 |
| [XIII]. | Bell and the Telephone | 215 |
| [XIV]. | Edison and the Electric Light | 233 |
| [XV]. | Marconi and the Wireless Telegraph | 261 |
| [XVI]. | The Wrights and the Airship | 273 |