| Year | 1996 |
| Date | 03-May |
| Volume | 176 |
| Issue | 4,016 |
| Page | 520 |
| Category | General |
| Part | |
| Title | Compressed Air or Steam? |
| Author | Tubal Cain replied... |
| Notes | To justify experience by analysis, expansion diagram, expansion in the engine, effects in a real engine, vapours and gases, 'perfect' gases, expansion conditions, steam screwdrivers, drills, etc., gas turbines |