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  LXIII. 
  Intelligence 
  and 
  Miscellaneous 
  Articles. 
  

   On 
  Relativity 
  and 
  Electrodynamics. 
  

  

  To 
  the 
  Editors 
  of 
  the 
  Philosophical 
  Magazine. 
  

   Dear 
  Sirs, 
  27th 
  April, 
  1918. 
  

  

  A 
  S 
  the 
  result 
  of 
  some 
  correspondence, 
  Dr. 
  Gr. 
  A. 
  Schott 
  has 
  

   •*■*- 
  detected 
  an 
  error 
  of 
  sign 
  in 
  my 
  calculation 
  of 
  the 
  trans- 
  

   verse 
  inertia 
  of 
  a 
  " 
  contracted 
  conducting 
  electron." 
  In 
  con- 
  

   sequence 
  of 
  this 
  the 
  following 
  numerical 
  correction 
  should 
  be 
  

   inserted 
  in 
  my 
  recent 
  paper 
  on 
  " 
  Kelatirity 
  and 
  Electrodynamics." 
  

   For 
  a 
  contracted 
  conducting 
  electron 
  

  

  H 
  1+ 
  6u?) 
  

  

  inplaceof 
  ^^(i+S^ 
  

  

  leading 
  to 
  l 
  , 
  _ 
  , 
  _ 
  2 
  

  

  inplaceof 
  ,, 
  , 
  __ 
  1 
  

  

  There 
  is 
  a 
  corresponding 
  correction 
  for 
  a 
  Bucherer 
  electron 
  , 
  

   viz. 
  

  

  in 
  place 
  of 
  /-, 
  . 
  31 
  v 
  2 
  \ 
  

  

  2 
  * 
  ' 
  2 
  ~60 
  

   in 
  place 
  of 
  1 
  h 
  h 
  _ 
  1 
  

  

  I 
  am, 
  

  

  Yours 
  faithfully, 
  

  

  George 
  W. 
  Walker. 
  

  

  