12 Some Experiments in Magnetism. [Nov. 9, 



Mixture in the proportion of 



Fe + S. 



3Fe + 4S. 



2Fe 



+ 3S. 



Magnet. 



Away from 

 magnet. 



Magnet. 



Away from 

 magnet. 



Magnet. 



Away from 

 magnet. 



4*455 

 4-581 

 4-763 



4-593 

 4-710 

 4-579 

 4 -648 

 4-653 



4-229 

 4-519 

 4-394 

 4 -407 # 



4-364 

 4-301 

 4-420 



ooo 

 4-443 

 4-377 

 4 -703* 



A -T7Q 



4-565 

 4-506 



Mean of 3 

 experiments. 

 4-600 



Mean of 5 

 experiments. 

 4 -637 



Mean of 3 

 experiments. 

 4-381 



Mean of 3 

 experiments. 

 4-362 



Mean of 3 

 experiments 

 4-393 



Mean of 3 

 experiments. 

 4-417 



Two experiments were made to find out how the density varied in 

 any one bar. The mixtures used were the second and third of the 

 above three ; each was placed in a tube more than twice the length of 

 those used in the experiments already described, and both were fired 

 separately in the strong magnetic field, the tubes passing right through 

 the bored poles of the magnet, the distance between the poles being 

 1 inch. The rod formed was broken into three portions, called the 

 top, middle, and bottom respectively. The results were as follows : — 



3Fe + 4S ... top, 4-384; middle, 4*533; bottom, 4-305; mean, 4-407. 

 2Fe + 3S... „ 4-664 „ 4-718; „ 4-728; „ 4-703. 



My thanks are due to Mr. E. W. Kennedy for help in the deter- 

 mination of the densities. 



* The tube used in these experiments was much longer than in the others. 



