| Year | 1904 |
| Date | 14-Jul |
| Volume | 11 |
| Issue | 168 |
| Page | 27 |
| Category | Internal Combustion |
| Part | |
| Title | Indicator Diagrams from a Petrol Motor |
| Author | Prof. H.L.Callendar |
| Notes | "Projection of Indicator Diagrams of a Petrol Motor" at a recent meeting of the Physical Society |