| Year | 1930 |
| Date | 27-Nov |
| Volume | 63 |
| Issue | 1,542 |
| Page | 515 |
| Category | Steam |
| Part | |
| Title | Compound v. Simple Engines |
| Author | V.W.Delves Broughton |
| Notes | Some Notes on When Compounding is Effective. Theoretical diagram, ration of expansion, diagram of engine working at 50 lbs. per square inch |