Book V
- Chapter 1: ON DECLINATION.
- Chapter 2: Diagram of declinations of the magnetick needle, when
- Chapter 3: *
- Chapter 4: Concerning the length of a versorium convenient
- Chapter 5: That declination does not arise from the attraction
- Chapter 6: On the proportion of declination to latitude, and
- Chapter 7: Explanation of the diagram of the rotation of
- Chapter 8: Diagram of the rotation of a magnetick needle,
- Chapter 9: Demonstration of direction, or of variation from the
- Chapter 10: On the variation of the declination.
- Chapter 11: On the essential magnetick activity sphærically
- Chapter 12: Magnetick force is animate, or imitates life; and in