Preface; 1. On general properties of bodies; 2. On the attraction of gravity; 3. On the laws of motion; 4. On compound motion; 5. On the mechanical powers; 6. Astronomy; 7. On the planets; 8. On the earth; 9. On the moon; 10. Hydrostatics; 11. Of springs, fountains, etc.; 12. Pneumatics; 13. On wind and sound; 14. On optics; 15. On the angle of vision, and the reflection of mirrors; 16. On refraction and colours; 17. Optics; Index.