Book VI
- Chapter 1: ON THE GLOBE OF THE EARTH, THE
- Chapter 2: The Magnetick axis of the Earth
- Chapter 3: On the magnetick diurnal revolution of the Earth's globe,
- Chapter 4: That the Earth moves circularly.
- Chapter 5: Arguments of those denying the Earth's motion, and
- Chapter 6: On the cause of the definite time, of an entire
- Chapter 7: On the primary magnetick nature of the Earth,
- Chapter 8: On the Præcession of the Æquinoxes, from the
- Chapter 9: On the anomaly of the Præcession of the Æquinoxes,