On the Magnet

Chap. 7. The method of the diagram of magnetic iron conversion.
Chap. 8. A diagram of the conversion of magnetic iron, indicating magnetic declination in every latitude, and latitude from conversion and declination.
Chap. 9. Demonstration of direction, or variation from true direction, together with declination; by a single motion in water, from the disposing virtue and the convertible body.
Chap. 10. On the variation of declination.
Chap. 11. On the formal magnetic act diffused spherically.
Chap. 12. The magnetic force is animated, or imitates a soul; in many respects it surpasses the human soul while it is bound to an organic body.

Chap. 1. On the globe of the Earth, a great magnet.
Chap. 2. The magnetic axis of the Earth remains invariable.
Chap. 3. A probable assertion concerning the daily magnetic revolution of the terrestrial globe, against the inveterate opinion of the primum mobile original: "primi mobilis" — the 'first moved' sphere in Ptolemaic cosmology..
Chap. 4. That the Earth is moved circularly.
Chap. 5. The reasons of those who deny the motion of the Earth, and their refutation.
Chap. 6. On the cause of the defined time of the Earth's entire conversion.
Chap. 7. On the primary magnetic nature of the Earth, by which its poles are separated from the poles of the ecliptic.
Chap. 8. On the precession of the equinoxes from the magnetic motion of the Earth's poles, in the arctic and antarctic circles of the Zodiac.
Chap. 9. On the precession of the equinoxes, and the anomaly of the obliquity of the Zodiac.

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