106 TRANSIENT ELECTRO-MAGNETIC ACTION. 



conducting- wires, as in Fig. 28. At the instant 

 of stopping and of renewing the battery circuit 

 around the piece of iron inserted in the coil, an 



Fig, 2 



electric spark is seen to pass between the iron and 

 adjacent knob, w, showing the disturbance of the 

 electric ether pervading the particles of iron, and 

 thus developing the peculiar electric excitation, 

 denoted " magneto-electricity." 



These reciprocal movements of bodies toward 

 each other, and their union while transmitting 

 currents in similar directions, result from the 

 modification of the vibratory impulses against 

 the adjacent and opposite sides of approximated 

 bodies ; as previously explained. For this special 

 reason, the movements developed by electric 

 currents, it is to be remembered, are not in the 

 direction of the currents passing over electrodes, 

 but at right angles to them ; as shown in Fig. 19, 

 where the actual movements are pointed out by 



