The Loadstone (Natural Magnet)
On the magnet, magnetick bodies also, and on the great magnet the earth: a new physiology, demonstrated by many arguments & experiments
Chapter 16
Movements take place by the Magnetical Vigour though solid bodies lie between; and on the interposition of iron plates →

Chapter 17
The Iron Cap of a Loadstone, with which it is armed at the pole (for the sake of the virtue) and on the efficacy of the same →

Chapters 18-21
An armed Loadstone does not endow an excited piece of Iron with greater vigour than an unarmed →

Chapter 22
Magneticks in conjunction make one magnetick →

Chapter 23
Magnetick Force causes motion towards unity, and binds firmly together bodies which are united →

Chapter 25
Exaltation of the power of the Magnet →

Chapter 26
Why there should appear to be a greater love between iron and loadstone, than between loadstone and loadstone, or between iron and iron, when close to the loadstone, within its orbe of virtue →

Chapter 27
The Centre of the Magnetick Virtues in the earth is the centre of the earth; and in a terrella is the centre of the stone →

Chapter 29
Variety of Strength due to Quantity or Mass →

Chapter 32
Certain Problems and Magnetick Experiments about the Coition, and Separation, and regular Motion of bodies magnetical →

Chapter 33
The Varying Ratio of Strength, and of the Motion of coition, within the orbe of virtue →

Chapter 34
Why a Loadstone should be stronger in its poles in a different ratio; as well in the Northern regions as in the Southern →