Book 2.
[Chap. 1]. On Magnetick Motions.
[Chap. 2]. On the Magnetick Coition, and first on the attraction of Amber, or more truly, on the attaching of bodies to Amber.
[Chap. 3]. Opinions of others on Magnetick Coition, which they call Attraction.
[Chap. 4]. On Magnetick Force & Form, what it is; and on the cause of the Coition.
[Chap. 5]. How the Power dwells in the Loadstone.
[Chap. 6]. How magnetick pieces of Iron and smaller loadstones conform themselves to a terrella & to the earth itself, and by them are disposed.
[Chap. 7]. On the Potency of the Magnetick Virtue, and on its nature capable of spreading out into an orbe.
[Chap. 8]. On the geography of the Earth, and of the Terrella.
[Chap. 9]. On the Æquinoctial Circle of the Earth and of a Terrella.