﻿Becquerel. 
  

  

  Phil. 
  Mag. 
  Ser. 
  6, 
  Yol. 
  16, 
  PL 
  Y. 
  

  

  Fig. 
  1. 
  

  

  Xexotime. 
  

   Spectra 
  of 
  two 
  circular 
  vibrations 
  of 
  different 
  sense 
  in 
  a 
  magnetic 
  field 
  of 
  12,000 
  

   gauss, 
  at 
  temperature 
  of 
  liquid 
  air. 
  Plate 
  mm, 
  80 
  thick 
  ; 
  green 
  group. 
  2° 
  sp. 
  

   Rowland 
  grating. 
  Scale 
  : 
  l 
  mm 
  = 
  O^lOo. 
  

  

  Fig. 
  2. 
  

  

  Xekotime. 
  

  

  Spectra 
  of 
  two 
  circular 
  vibrations 
  of 
  different 
  sense. 
  Plate 
  mm, 
  80 
  thick 
  ; 
  2° 
  sp. 
  

   Rowland 
  grating. 
  Blue-green 
  group. 
  Magnetic 
  field 
  12,000 
  gauss, 
  at 
  

   temperature 
  of 
  liquid 
  air. 
  ' 
  Scale 
  : 
  l 
  n,m 
  = 
  0^-165. 
  

  

  Fig. 
  3. 
  

  

  

  Spectrum 
  1, 
  

  

  Spectrum 
  2. 
  

  

  X 
  I'Ni 
  i 
  I 
  IMI 
  . 
  

  

  Rotatory 
  magnetic 
  polarization 
  a1 
  - 
  188°. 
  Mr. 
  

  

  0"""-M) 
  thick 
  

  

  nietic 
  field 
  12,300 
  gauss. 
  Plate 
  

  

  