CHEMICAL ACTION AND MAGNETISM 303 



mass of material, all of which gave analogous results. While 

 the effect of magnetism should produce acceleration, the 

 variations of C from that of the non-magnetic reaction are 

 negative quite as frequently as positive. 



Series I. KClOs+GFeSC^+SHaSC^. Temperature, 10.2, 

 Series II. Same conditions, in magnetic field (10 cells). 



24-38 24-26 



30-25 29-75 22-78 22-88 -0 4 9524 -0 4 8357 



105 104-25 20-22 20-28 8050 7940 



155-17 154-86 18-71 18-68 8011 7951 



210 210 17-49 17-27 7695 7942 



241 241-33 16-82 16-79 7546 7599 



305-25 305-5 15-64 15-53 7491 7584 



Mean -0 4 8051 -0 4 7895 



Mean of last five . . . -0 4 7758 -0 4 7803 



Series III. Same relation, KClOsiFeSCX; great excess 

 H 2 SO 4 . Temperature, 18.7. 



Series IV. Same as III, but with magnet (20 cells). 



Series V. Same as III, but with magnet (dynamo). 

 [152] 



t A x C 



in rv 



23-16 23-10 23-10 ... 



20 20 20-5 18-57 18-39 18-32 -0 3 5335 .0 3 5543 -0 3 5509 



40 40 40 15-33 15-45 15-41 5513 5358 , 5400 



60 60 60] 13-28 13-38 13-21 5353 5241 5401 



80 80-5 80 11-71 11-58 11-42 5276 5348 5534 



REDUCTION OF FERRIC CHLORIDE 



The reaction 2HI+2FeCl 3 =l2+2FeCl 2 +2HCl, is not a 

 simple one, being reversible, and furthermore accompanied 

 by complicating bye-reactions. It seemed better to avoid all 



