| Year | 1947 |
| Date | 18-Dec |
| Volume | 97 |
| Issue | 2,430 |
| Page | 651 |
| Category | Hot Air |
| Part | |
| Title | The Hot-Air Engine. Its Past and its Possibilities |
| Author | B.C.J. |
| Notes | A modified Robinson engine, possibilities of improving the hot-air engine, the past life of the hot-air engine, the Robinson engine, the Heinrici engine, the Bailey engine, "air-oil" engine, modern engines - and model engines |