﻿Series 
  Law 
  of 
  Resonance 
  Spectra. 
  

  

  259 
  

  

  Excitation 
  by 
  Hg 
  5769*6 
  (5771*2 
  Reduced 
  to 
  Vacuum). 
  

  

  — 
  1 
  Order. 
  

  

  Fifth 
  Order. 
  

  

  1 
  

  

  1 
  

  

  X 
  

  

  X 
  

  

  5701-8 
  175383 
  

  

  6139-0 
  162893 
  

  

  5705-2 
  27S 
  

  

  41-0 
  839 
  

  

  

  ♦431 
  784 
  

  

  Order. 
  

  

  

  57660 
  173430 
  

  

  Sixth 
  Order. 
  

  

  67-8 
  376 
  

  

  ♦5771-2 
  274 
  

  

  75-2 
  154 
  

  

  62151 
  160898 
  

   170 
  849 
  

   18-9 
  . 
  800 
  

  

  + 
  1 
  Order. 
  

  

  ♦221 
  717 
  ll29 
  

   ♦27-1 
  588/ 
  l 
  ™ 
  

  

  5834-4 
  171397 
  

  

  

  38-5 
  277 
  

  

  Seventh 
  Order. 
  

  

  ♦5842-5 
  1591 
  ,- 
  7 
  

   ♦5847*2 
  022 
  j" 
  10 
  ' 
  

  

  

  6294-9 
  158858 
  

  

  

  99-6 
  740 
  

  

  Second 
  Order. 
  

  

  ♦6303-5 
  641 
  

  

  5911-2 
  169170 
  

   14-7 
  070 
  

  

  Eighth 
  Order. 
  

  

  ♦5915-8 
  039\ 
  14 
  o 
  

   ♦5920-2 
  168896 
  J 
  l 
  ° 
  

  

  6374-3 
  156879 
  

  

  Third 
  Order. 
  

  

  Ninth 
  Order. 
  

  

  5985-2 
  167078 
  

  

  6459-7 
  154806 
  

  

  88-3 
  166992 
  

  

  63-7 
  710 
  

  

  ♦900 
  9451 
  149 
  

   ♦95-1 
  803 
  j 
  1 
  ^ 
  

  

  ♦679 
  609 
  1 
  19R 
  

   ♦73-2 
  483 
  1" 
  l 
  *> 
  

  

  Fourth 
  Order. 
  

  

  Tenth 
  Order. 
  

  

  6060-4 
  165006 
  

  

  6544-1 
  152809 
  

  

  646 
  164891 
  

  

  48'7 
  702 
  

  

  69-1 
  164769 
  

  

  ♦530 
  602 
  

  

  The 
  l/\ 
  difference, 
  in 
  the 
  case 
  of 
  the 
  components 
  of 
  the 
  

   doublets, 
  is 
  not 
  constant, 
  as 
  in 
  the 
  previous 
  case, 
  but 
  varies 
  

   from 
  143 
  to 
  126. 
  

  

  As 
  to 
  the 
  spacing 
  of 
  the 
  doublets 
  along 
  the 
  spectrum, 
  

   we 
  find 
  that 
  in 
  this 
  case 
  the 
  1/X 
  difference 
  is 
  very 
  nearly 
  

   constant, 
  as 
  is 
  shown 
  by 
  the 
  following 
  table 
  : 
  — 
  

  

  Order. 
  

  

  -1 
  

   

   1 
  

   2 
  

   3 
  

   4 
  

  

  175383 
  

   173274 
  

   171159 
  

   169039 
  

   166945 
  

  

  I 
  Dif. 
  

  

  2109 
  

   2015 
  

   2120 
  

   2094 
  

   2080 
  

  

  Order. 
  

  

  5 
  

  

  6 
  

   7 
  

   8 
  

   9 
  

   10 
  

  

  1 
  

  

  X 
  

   162784 
  

   160715 
  

   158641 
  

  

  154612 
  

   152602 
  

  

  Dif. 
  

  

  2069 
  

   2074 
  

  

  2014 
  

   2010 
  

  

  