116 MAGNETISM. 



examine it in a similar way, you see that one of 

 its ends repels the suspended magnet; the force 



Fig. 37. Fig. 38. 



then is no longer attraction but repulsion ; but, 

 if I take the other end of the magnet and 

 bring it near, it shows attraction again. 



You will see this better, perhaps, by another 

 kind of experiment. Here (fig. 38) is a little 

 magnet, and I have coloured the ends differently 

 so that you may distinguish one from the other. 

 Now this end (s) of the magnet (fig. 37) attracts 

 the uncoloured of the little magnet. You see 

 it pulls it towards it with great power. And as 

 I carry it round, the uncoloured end still follows. 

 But now if I gradually bring the middle of the 

 bar magnet opposite the uncoloured end of the 

 needle, it has no effect upon it, either of attrac- 

 tion or repulsion, until, as I come to the oppo- 



