﻿548 
  Prof. 
  D. 
  N. 
  Mallik 
  on 
  Magnetic 
  

  

  In 
  order 
  to 
  get 
  rid 
  as 
  far 
  as 
  possible 
  of 
  the 
  effect 
  of 
  

   decomposition 
  on 
  the 
  passage 
  of 
  the 
  discharge, 
  the 
  gas 
  was 
  

   pu 
  ped 
  out 
  and 
  fresh 
  gas 
  introduced 
  several 
  times 
  during 
  

   the 
  experiments. 
  

  

  Carbon 
  tetrachloride 
  (CC1 
  4 
  ). 
  

  

  The 
  " 
  band 
  " 
  discharge 
  appears 
  at 
  about 
  48 
  millimetres 
  and' 
  

   the 
  rotation 
  continues 
  up 
  to 
  a 
  pressure 
  of 
  6*9 
  millimetres. 
  

  

  The 
  following 
  results 
  indicate 
  the 
  variations 
  of 
  the 
  period 
  

   of 
  rotation 
  T 
  and 
  pressure 
  : 
  

  

  p- 
  

  

  T. 
  

  

  T 
  

  

  6-9 
  

  

  •95 
  

  

  7-2 
  

  

  10 
  

  

  1-3 
  

  

  7-7 
  

  

  24 
  

  

  1-6 
  

  

  15 
  

  

  48 
  

  

  1-8 
  

  

  26-6 
  

  

  It 
  was 
  found 
  to 
  be 
  a 
  rather 
  inconvenient 
  gas 
  to 
  work 
  with 
  ;. 
  

   accordingly, 
  sufficient 
  number 
  of 
  determinations 
  could 
  not 
  be 
  

   obtained. 
  

  

  The 
  curves 
  of 
  p, 
  T, 
  and 
  p 
  and 
  the 
  potential-difference 
  are 
  

   given 
  in 
  figs. 
  13 
  and 
  14. 
  

  

  Sulphur 
  dioxide 
  (S0 
  2 
  ). 
  

  

  Rotation 
  was 
  observable 
  between 
  the 
  pressures 
  46 
  mm. 
  and 
  

   3 
  mm. 
  

  

  pp- 
  increases 
  with 
  pressure. 
  

  

  p. 
  T. 
  T 
  . 
  

  

  46 
  1-45 
  31-7 
  

  

  30 
  T25 
  24 
  

  

  21 
  1-19 
  17-6 
  

  

  13 
  *84 
  15-5 
  

  

  The 
  curve 
  connecting 
  p 
  and 
  T, 
  and 
  that 
  connecting 
  p 
  and 
  

   potential-difference 
  are 
  given 
  in 
  figs. 
  13 
  and 
  14. 
  

  

  When 
  discharge 
  was 
  passed 
  through 
  benzene, 
  ammonia 
  

   and 
  ether, 
  they 
  decomposed 
  so 
  rapidly 
  that 
  no 
  measurements 
  

   could 
  be 
  obtained. 
  

  

  Further 
  experiments 
  on 
  the 
  subject 
  are 
  in 
  progress, 
  and 
  I 
  

  

  