The Earth
Section 4b
Burning, tasteless, and acidic waters →
Section 4c
The Magnet →
Section 4d
The nature of the magnet →
Section 5
The Properties of Magnets →
Section 5
How the Striped particles Flow through the paths of the Earth →
Section 5c
Why do 2 Magnets Attract Each Other? →
Section 5c
Why do the parts of the magnet, which were united before, also repel each other? →
Section 5e
Why is steel more suitable for receiving it than lighter iron? →
Section 5f
Why can the declination be smaller in a magnet standing above one of its poles than when its poles are equally distant from the Earth? →
Section 5g
The observations that can be made about iron filings scattered around a magnet →
Section 5h
The force of attraction in amber, wax, resin, and similar substances →
Section 11
The Types of Human Senses →