( ) 
and will touch other Steel, and that a Compafs, fo 
well as the Loadltone itfelf, and fo vigorous, if ufed 
as hereafter is direded. 
XIII. That the Earth contains within it, at or near 
its Center, a Loadftone or Magnet (probably fpherical) 
large enough very fenfibly to affed magnetical Bodies 
all over the Surface of the Earth. The Poles of its 
Attradiori are confiderably dihant from thofe of its 
own, which are the fame with thofe of the Earth’s 
Diurnal Rotation. This internal Magnet mufl either 
be loofe from the Body of the Earth, and revolve 
within it very little llowTr, or elfe, if it is fixed to the 
Earth, the very Polarity itfelf muft have changed its 
s Situation in refped of the faid Magnet, One, of which, 
feveral recorded Obfervations in diftant Years fuffici- 
ently prove. The former feems moll: probable : How- 
ever, I imagine (was itnotfor tiie Charge and Trou- 
ble) an Experiment might be made which would 
Riew whether or no it is polTible in Nature for the 
Poles of the faid Central Magnet to change their Situ- 
ation in refped of itfelf, as well as of the Earth, as 
will appear when I give the Defcription of it. 
XIV. That every Loadftone within its attradive 
;Sphere has a Power (the nearer either of its Poles the 
greater) to keep one Piece of Iron fufpended to ano- 
ther, efpecially if that to which it is fufpended is 
the largeft, and their Ends be bright and clean, 
where they touch one another ^ and if the fufpended 
Iron is not too heavy, the other will draw it up from 
either Pole of the naked Loadftone adually touching 
it, and will alio keep it fufpended, till at a confidera- 
ble Diftance therefrom ; but will not draw it off in 
fuch 
