﻿294 
  Mr. 
  McClung 
  on 
  the 
  Rate 
  of 
  Recombination 
  of 
  

  

  and 
  theoretical 
  curves 
  correspond 
  very 
  closely 
  with 
  each 
  other. 
  

   Any 
  slight 
  disagreement 
  is 
  well 
  within 
  the 
  limits 
  of 
  experi- 
  

   mental 
  error, 
  especially 
  taking 
  into 
  consideration 
  the 
  fact 
  

   that 
  the 
  intensity 
  of 
  the 
  rays 
  may 
  vary 
  slightly 
  during 
  the 
  

   course 
  of 
  taking 
  the 
  observations 
  necessary 
  for 
  one 
  such 
  curve. 
  

  

  190 
  

  

  180 
  

  

  170 
  

  

  160 
  

  

  150 
  

  

  140 
  

  

  130 
  

  

  120 
  

  

  110 
  

  

  100 
  

  

  90 
  

  

  80 
  

  

  70 
  

  

  60 
  

  

  50 
  

  

  40 
  

  

  Fier. 
  5. 
  

  

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  X 
  

  

  

  

  

  

  

  

  

  1 
  

  

  

  

  

  

  

  

  

  

  

  ^>^ 
  r 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  * 
  

  

  --9 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  -040 
  '080 
  "120 
  "1C0 
  "200 
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  '360 
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  -480 
  -520 
  '560 
  '600 
  

  

  Time. 
  

  

  The 
  agreement 
  is 
  quite 
  close 
  enough 
  to 
  show 
  the 
  accuracy 
  of 
  

   the 
  theory. 
  The 
  experimental 
  investigation 
  therefore 
  supports 
  

   the 
  theory, 
  and 
  we 
  see 
  that 
  the 
  same 
  law 
  of 
  recombination 
  

   holds 
  true 
  at 
  different 
  pressures, 
  at 
  least 
  for 
  the 
  range 
  of 
  

   pressures 
  investigated. 
  

  

  It 
  was 
  not 
  easy 
  to 
  obtain 
  curves 
  for 
  pressures 
  much 
  below 
  

   •125 
  of 
  an 
  atmosphere, 
  for 
  at 
  the 
  very 
  low 
  pressures 
  the 
  effects 
  

   obtained 
  by 
  this 
  method 
  were 
  so 
  small 
  that 
  they 
  could 
  not 
  be 
  

   relied 
  upon 
  with 
  any 
  great 
  degree 
  of 
  certainty. 
  However, 
  

   there 
  are 
  no 
  indications 
  that 
  the 
  law 
  does 
  not 
  hold 
  below 
  this 
  

   pressure. 
  

  

  