﻿Distribution 
  of 
  Energy 
  in 
  the 
  Spectra 
  of 
  Gases. 
  813 
  

  

  curves 
  of 
  the 
  energy 
  in 
  the 
  spectrum 
  had 
  been 
  obtained, 
  this 
  

   tube 
  was 
  broken 
  in 
  the 
  process 
  of 
  cleaning. 
  The 
  capillary 
  

  

  Fis. 
  9. 
  

  

  WATER 
  

  

  CLASS 
  TUBE 
  

  

  WATER 
  

  

  portion 
  not 
  being 
  much 
  damaged, 
  it 
  was 
  found 
  possible 
  

   to 
  mend 
  the 
  tube 
  with 
  one 
  of 
  the 
  bulbs 
  from 
  the 
  smaller 
  

   apparatus, 
  and 
  the 
  arrangement 
  depicted 
  in 
  fig. 
  10 
  (p. 
  814) 
  

   was 
  resorted 
  to. 
  Immersing 
  the 
  whole 
  in 
  water 
  seems 
  to 
  

   give 
  more 
  consistent 
  results 
  than 
  are 
  otherwise 
  obtained, 
  and 
  

   it 
  is 
  not 
  necessary 
  to 
  wait 
  so 
  long 
  between 
  observations 
  for 
  

   the 
  necessary 
  cooling. 
  

  

  Before 
  giving 
  a 
  curve 
  showing 
  how 
  the 
  total 
  radiation 
  varies 
  

   with 
  the 
  current 
  when 
  the 
  latter 
  is 
  not 
  disruptive, 
  we 
  repro- 
  

   duce 
  a 
  curve 
  (2 
  A, 
  PI. 
  XIV.) 
  showing 
  electrometer 
  deflexions 
  

   against 
  potentials, 
  so 
  as 
  to 
  show 
  that 
  the 
  region 
  over 
  which 
  

   the 
  leaf 
  moved 
  was 
  one 
  capable 
  of 
  giving 
  reliable 
  readings. 
  

  

  The 
  potentiometer 
  method 
  of 
  varying 
  the 
  potentials 
  was 
  

   adopted, 
  and 
  it 
  was 
  assumed 
  that 
  the 
  current 
  through 
  the 
  

   discharge-tube 
  and 
  the 
  potentiometer 
  resistance 
  in 
  series 
  

   remained 
  constant. 
  This 
  can 
  easily 
  be 
  tested 
  subsequently 
  

  

  