| fig. | Description. | page |
| 1. | Diagram to explain the meaning of Suction | 1 |
| 2. | Diagram to explain the meaning of Compression | 2 |
| 3. | Otto Cycle. The Suction Stroke | 3 |
| 4. | Otto Cycle. The Compression Stroke | 4 |
| 5. | Otto Cycle. The Power Stroke | 5 |
| 6. | Otto Cycle. The Exhaust Stroke | 6 |
| 7. | General arrangement of a Modern Petrol Engine | 9 |
| 8. | Sectional Drawing of a T-headed Cylinder | 12 |
| 9. | Outside View of a Water-jacketed Cylinder | 12 |
| 10. | Stud | 14 |
| 11. | Bolt | 14 |
| 12. | Setscrew | 14 |
| 13. | Motor-cycle Engine with air-cooled Cylinder | 14 |
| 14. | Aeroplane Engine Cylinder | 15 |
| 15. | Cast-iron Piston | 18 |
| 16. | Method of fixing Gudgeon Pin | 19 |
| 17. | Three forms of Piston-head | 19 |
| 18. | Connecting Rod in the form of a Stamping | 20 |
| 19. | Connecting Rod turned from a solid Bar of Steel | 21 |
| 20. | Crankpin and Crankwebs | 22 |
| 21. | Four-throw Crankshaft | 23 |
| 22. | Motor-cycle Crankpin | 24 |
| 23. | Balanced Crank | 25 |
| 24. | Sketch showing the unbalanced portion of a Crank | 25 |
| 25. | Balanced Two-throw Crankshaft | 26 |
| 26. | Force acting on a Flywheel Rim | 26 |
| 27. | Built-up Steel Flywheel | 27 |
| 28. | Flywheel turned from a Steel Stamping | 28 |
| 29. | General arrangement of a Poppet Valve | 30 |
| 30. | Sectional Drawing of the Cylinder of a Sleeve-valve Engine | 31 |
| 31. | Sectional Drawing of the Cylinder of a Sleeve-valve Engine | 32 |
| 32. | Poppet Valve-head, showing Slot for Grinding-in purposes | 34 |
| 33. | Inlet and Exhaust Valve Cams | 34 |
| 34. | Eccentric Sheave and Rod for a Sleeve Valve | 36 |
| 35. | A Pair of Timing Wheels | 37 |
| 36. | A Crank Chamber, outside end view | 39 |
| 37. | A Crank Chamber, sectional view | 39 |
| 38. | General arrangement of the Carburetting Plant | 43 |
| 39.<
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