NOMOS. 69 



surface of this body. We assume this, because the 

 currents from the conductor are the stronger, in that 

 they represent the whole force of the galvanic bat- 

 tery with which the conductor is connected, and be- 

 cause they are capable of acting upon all bodies in- 

 differently ; whereas the currents of the magnet 

 originate within the mere compass of that body, and 

 are only capable of acting upon iron and a very few 

 bodies besides. We assume these things, and the 

 movements of the magnet follow as a matter of course. 

 Suppose c and M to be transverse sections of the 

 conductor and magnet respectively ; suppose the 

 arrows a b, a' V ', a" b" to be different parts of the 

 current overflowing from the conductor and con- 

 verging to the nearest part of the magnet ; suppose 

 the arrows c d, c' d' 9 c" d" to be different parts of 

 the current surrounding the magnet, and what will 

 be the result ? 



fig. 17. 

 i- :? 



