﻿268 
  Mr. 
  L. 
  Vegard 
  : 
  He 
  searches 
  upon 
  

  

  We 
  shall 
  assume 
  what 
  is 
  generally 
  confirmed 
  by 
  experiment, 
  

  

  that 
  for 
  a 
  small 
  leak 
  ^ 
  — 
  and 
  consequently 
  - 
  T 
  - 
  and 
  -^— 
  are 
  

   air 
  J 
  air 
  air 
  

  

  continuous 
  in 
  the 
  interval 
  

  

  0<T<<7r 
  '. 
  

  

  We 
  shall 
  develop 
  the 
  functions 
  X 
  and 
  I 
  in 
  the 
  neighbour- 
  

   hood 
  of 
  the 
  point 
  7r 
  = 
  7r 
  '. 
  Then 
  we 
  get 
  

  

  But 
  according 
  to 
  the 
  definition 
  of 
  *■</ 
  we 
  have 
  

  

  ««-,') 
  -o. 
  

  

  And 
  remembering 
  that 
  

  

  C/7T 
  ^7T 
  ~~ 
  C/7T 
  ' 
  

  

  we 
  get 
  

  

  V=(ir-» 
  r 
  )(^) 
  +*?«) 
  + 
  « 
  2 
  + 
  a 
  2 
  '. 
  

  

  For 
  the 
  apparent 
  equilibrium 
  pressure 
  we 
  have 
  

  

  V 
  = 
  and 
  7r=7r 
  / 
  , 
  

   which 
  gives 
  

  

  With 
  the 
  same 
  accuracy 
  as 
  before 
  we 
  can 
  put 
  

   « 
  2 
  "=0, 
  

   v 
  (ir 
  ') 
  = 
  i7W 
  = 
  V, 
  

   /dX'\ 
  _/^\ 
  

  

  and 
  

  

  '•'"'♦T^" 
  (5) 
  

  

  