﻿of 
  Films 
  of 
  Cobalt 
  8fC. 
  in 
  Magnetic 
  Fields. 
  251 
  

  

  External 
  Field. 
  

  

  ] 
  

  

  

  i 
  3 
  

  

  4 
  

  

  t 
  

  

  > 
  G 
  

  

  7 
  

  

  8 
  

  

  9 
  

  

  10 
  

  

  1 
  

  

  L 
  12 
  

  

  i 
  

  

  i 
  14 
  

  

  1 
  

  

  5 
  16C 
  

  

  )00 
  

  

  

  

  

  

  

  

  

  

  

  

  

  SL. 
  

  

  

  

  

  

  v?Tru 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  AlVhJ 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  -w 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  5000 
  

  

  

  XIV. 
  H.-Hall 
  effect 
  squared 
  for 
  No. 
  XIV. 
  

  

  Finally, 
  in 
  some 
  films 
  it 
  was 
  found 
  that 
  the 
  resistance 
  

   variation 
  was 
  for 
  low 
  fields 
  an 
  increase, 
  and 
  for 
  higher 
  fields 
  

   a 
  decrease. 
  The 
  results 
  for 
  three 
  films 
  of 
  this 
  nature 
  are 
  

  

  shown 
  in 
  the 
  following 
  diagram 
  :- 
  

  

  