I 



Bodies are repelled fi'om the Poles of a Magnet. 261 



Fig. 10. 



I . I 



A series of experiments was next made, in which the bar was 

 first acted on by the cm'rent passing through the helix, the mag- 

 net being brought to bear upon it afterwards. On the passage 

 of the current through the helix in the direction shown in fig. 11, 

 the bar set its length parallel to the axis of the latter. On ex- 

 citing the magnet so that its polarity was that indicated by the 

 letters N and S in the figure, the deflection was towards the 

 dotted position. 



Fig. 11. 



Interrupting the current through both magnet and helix, and 

 reversing the current through the latter, the bar came to rest, 

 as before, parallel to the axis : on exciting the magnet, as in the 

 last case, the deflection was that shown in fig. 12. 



