1898 - 99 .] Lord Kelvin on Magnetism. 635 
conceivably constitute the explanation of Faraday's diamagnetism. 
Go back to §§ 2, 3 above, and remark that if a body containing a 
vast number of the molecules there described is situated between 
the poles of a steel magnet, the total energy will be greater than if 
there were nothing but ether between the poles, by a difference 
equal to the kinetic energy of the motion of the resinously- 
electrified fluid. Hence, if a body containing the supposed 
congregation of molecules is movable, it must be repelled from 
the place of strong magnetic force between the poles to places of 
weaker force further from them. 
