﻿Spectrum 
  of 
  the 
  Radium 
  Emanation, 
  

  

  317 
  

  

  Wave-lengths 
  of 
  the 
  Emanation 
  Lines. 
  

  

  Visual. 
  

  

  Photograph. 
  

  

  Remarks. 
  

  

  Visual. 
  

  

  Photograph. 
  

  

  Remarks. 
  

  

  Inty 
  

  

  X. 
  

  

  Inty 
  

  

  X. 
  

  

  Inty 
  

  

  

  

  X. 
  

  

  4439 
  

  

  Inty 
  

  

  8 
  

  

  X. 
  

  

  

  

  6079 
  

  

  

  

  4435-7 
  

  

  Inty 
  2 
  in 
  photo. 
  3. 
  

  

  1 
  

  

  5976 
  

  

  

  

  

  

  3 
  

  

  4384-0 
  

  

  

  1 
  

  

  5945 
  

  

  

  

  

  4 
  

  

  4372-1 
  

  

  

  1 
  

  

  5829 
  

  

  

  

  3 
  

  

  4351 
  

  

  15 
  

  

  4350-3 
  

  

  

  1 
  

  

  5765 
  

  

  

  

  

  

  7 
  

  

  4340-9 
  

  

  Ky 
  4340-66. 
  Absent 
  

  

  3 
  

  

  5718 
  

  

  1 
  

  

  57150 
  

  

  1 
  

  

  4310 
  

  

  10 
  4308-3 
  

  

  from 
  3rd 
  photo. 
  

  

  5 
  

  

  5582 
  

  

  8 
  

  

  5582-2 
  

  

  

  

  2 
  

  

  4225-8 
  

  

  

  

  

  5395 
  

  

  

  

  53924 
  

  

  

  1 
  

  

  4202 
  

  

  10 
  

  

  4203-7 
  

  

  

  

  

  5372 
  

  

  

  

  

  

  

  5 
  

  

  4188-2 
  

  

  

  1 
  

  

  5257 
  

  

  

  

  

  1 
  

  

  4169 
  

  

  20 
  

  

  41666 
  

  

  

  2 
  

  

  5120 
  

  

  

  

  

  

  7 
  |4114 
  9 
  

  

  

  10 
  

  

  5087 
  

  

  4 
  

  

  5084-5 
  

  

  

  

  6 
  4102-2 
  

  

  US 
  4101-85. 
  Absent 
  

  

  o 
  

  

  5060 
  

  

  

  

  

  

  

  2 
  4088-4 
  

  

  from 
  3rd 
  photo. 
  

  

  10 
  

  

  4985 
  

  

  4 
  

  

  4979 
  

  

  

  

  

  1 
  |4055-7 
  

  

  

  1 
  

  

  4964 
  

  

  

  

  4965-6 
  

  

  

  

  

  2 
  4051-1 
  

  

  

  1 
  

  

  4955 
  

  

  00 
  

  

  49494 
  

  

  

  

  

  4 
  ;4045-4 
  

  

  

  1 
  

  

  4917 
  

  

  00 
  

  

  49146 
  

  

  

  

  

  1 
  4040-2 
  

  

  

  1 
  

  

  4895 
  

   4865 
  

  

  

  

  4889-5 
  

  

  4861-3 
  HjS 
  4861-49 
  

  

  

  

  10 
  J40180 
  

   12 
  39820 
  

  

  

  

  

  4831 
  

  

  1 
  

  

  4827-8 
  

  

  

  

  9 
  13971-9 
  

  

  Not 
  He 
  3970-25. 
  

  

  2 
  

  

  4820 
  

  

  4 
  

  

  4817-2 
  

  

  

  

  7 
  3957-5 
  

  

  

  

  

  4798 
  

  

  1 
  

  

  47967 
  

  

  

  

  3 
  3952-7 
  

  

  

  1 
  

  

  4772 
  

  

  3 
  

  

  4767-9 
  

  

  

  

  3 
  3933-3 
  

  

  

  1 
  

  

  4726 
  

  

  5 
  

  

  4721-5 
  Inty 
  1 
  in 
  photo. 
  3. 
  

  

  

  

  1 
  [3927-7 
  

  

  

  

  

  4705 
  

  

  2 
  

  

  4701-7 
  

  

  

  

  2 
  [3905-7 
  

  

  Inty 
  in 
  photo. 
  3. 
  

  

  5 
  

  

  4685 
  

  

  10 
  

  

  4681-1 
  Does 
  not 
  quite 
  dis- 
  

  

  

  

  4 
  3867-6 
  

  

  

  

  

  1 
  

  

  4671*8 
  appear 
  when 
  emana- 
  

  

  

  

  2 
  

  

  3818-0 
  

  

  

  

  

  I 
  

  

  46593 
  tion 
  condensed. 
  

  

  

  

  

  

  3811-2 
  

  

  

  5 
  

  

  4650 
  

  

  10 
  

  

  46447 
  

  

  

  

  10 
  

  

  37536 
  

  

  Inty 
  3 
  in 
  photo. 
  3. 
  

  

  6 
  

  

  4631 
  

  

  8 
  

  

  46259 
  

  

  

  

  1 
  

  

  3748-6 
  

  

  

  1 
  

  

  4614 
  

  

  7 
  

  

  4609-9 
  

  

  Inty 
  4 
  in 
  photo. 
  3. 
  

  

  

  

  7 
  

  

  37399 
  

  

  „ 
  1 
  

  

  3 
  

  

  4608 
  

  

  4 
  

  

  4604-7 
  

  

  „ 
  6 
  „ 
  

  

  

  

  2 
  

  

  3690-4 
  

  

  

  1 
  

  

  4581 
  

  

  7 
  

  

  4578-7 
  

  

  „ 
  -1 
  

  

  

  

  1 
  

  

  3679-2 
  

  

  

  

  

  4550 
  

  

  1 
  

  

  4549 
  9 
  

  

  

  

  

  10 
  3664-6 
  

  

  

  1 
  

  

  4511 
  

  

  9 
  

   2 
  

  

  45090 
  

   45040 
  

  

  „ 
  4 
  

  

  

  

  |3650-0 
  

   2 
  13626-6 
  

  

  „ 
  3 
  

  

  

  

  4460 
  

  

  10 
  

   2 
  

  

  4460 
  

   4440-6 
  

  

  1 
  

  

  2 
  

  

  

  

  I 
  3615-4 
  

   6 
  3612-2 
  

  

  

  None 
  o£ 
  the 
  emanation 
  lines 
  have 
  been 
  identified 
  in 
  any- 
  

   stellar 
  spectra.! 
  

   Manchester 
  University. 
  

  

  