Declination and Direction
On the magnet, magnetick bodies also, and on the great magnet the earth: a new physiology, demonstrated by many arguments & experiments
Declination
Chapter 1
Declination
Chapter 1
An indicatory instrument, showing the degrees of declination from the horizon
Chapter 3
The length of a versorium convenient for declination on a terrella
Chapter 4
The proportion of declination to latitude[236], and the cause of it
Chapter 6
Diagram of the rotation of a magnetick needle
Chapter 8
Demonstration of direction, or of variation from the true direction with declination
Chapter 9
The essential magnetick activity sphærically effused
Chapter 11
Magnetick force is animate, or imitates life
Chapter 12