38 HABIT AND INTELLIGENCE. [chap. hi. 



experiments 1 It cannot be from the static energy of the 

 magnet, for the magnet loses none of its magnetism, and con- 

 sequently cannot have parted with any of the static energy to 

 which its magnetic state is due. The magnets in Mr. Holmes's 

 electric lighthouse apparatus are stated by him rather to gain 

 than to lose force with use. But if the kinetic energy of the 

 electric current had to be obtained by the transformation of the 

 static energy of the magnets, the whole stock would no doubt 

 be expended in a few seconds at the most. The energy of the 

 transforms current is obtained by transforming the mechanical energy which 



mecha- jg employed in moving the magnets. The transformation takes 



nioal into ^ •' o o 



electric place under the injfuence of the magnets, and would not take 



energy. place without them, but it does not take place at their expense. 



