﻿Relations 
  in 
  

  

  Capillarity. 
  

  

  Benzene. 
  

  

  T. 
  

  

  L. 
  

  

  p- 
  

  

  P- 
  

  

  273 
  

  

  100-10 
  

  

  •9001 
  

  

  123-6 
  

  

  373 
  

  

  81-98 
  

  

  •7927 
  

  

  130-5 
  

  

  423 
  

  

  71-93 
  

  

  •7310 
  

  

  134-6 
  

  

  473 
  

  

  59-95 
  

  

  •6605 
  

  

  137-5 
  

  

  523 
  

  

  43-39 
  

  

  •5609 
  

  

  137-9 
  

  

  505 
  

  

  The 
  deduction 
  of 
  (11) 
  involves 
  the 
  relation 
  that 
  /c' 
  is 
  pro- 
  

   portional 
  to 
  the 
  absolute 
  temperature 
  or 
  k,' 
  =.^^ 
  which 
  is 
  

   only 
  approximately 
  true. 
  Hence 
  a 
  better 
  constancy 
  in 
  the 
  

   value 
  of 
  M 
  or 
  L/p^ 
  could 
  scarcely 
  be 
  expected. 
  

  

  Table 
  XI. 
  contains 
  in 
  the 
  second 
  column 
  the 
  mean 
  value 
  

  

  Table 
  XI. 
  

  

  Xame 
  of 
  liquid. 
  

  

  M. 
  

  

  Til. 
  

  

  Pc 
  

  

  M/?i3 
  p 
  c^ 
  

  

  Ether 
  

  

  Methyl 
  formate 
  

  

  Carbon 
  tetrachloride 
  

  

  Benzene 
  

  

  Chloro 
  benzene 
  

  

  161-4 
  

   ]l-2-7 
  

  

  19-4 
  

   132-8 
  

  

  72-9^ 
  

  

  74 
  

  

  60 
  

   154 
  

  

  78 
  

   112-5 
  

  

  •2604 
  

   •3489 
  

   •5576 
  

   -3045 
  

   •3654 
  

  

  1018 
  

   1032 
  

  

  989-7 
  

   1002 
  

  

  980-6 
  

  

  

  of 
  the 
  values 
  of 
  M 
  for 
  each 
  liquid 
  considered 
  in 
  Table 
  X. 
  A 
  

   rearrangement 
  of 
  equation 
  (11) 
  yields 
  

  

  ^bn^pa^ 
  _ 
  W 
  

  

  -where 
  everything 
  is 
  constant. 
  The 
  values 
  of 
  the 
  left-hand 
  

   side 
  are 
  calculated 
  in 
  Table 
  XI. 
  with 
  the 
  aid 
  of 
  the 
  values 
  of 
  

   Ca 
  obtained 
  from 
  Taljle 
  YIII. 
  The 
  resulting 
  value 
  is 
  very 
  

   nearly 
  the 
  same 
  for 
  the 
  five 
  liquids, 
  as 
  should 
  be 
  the 
  case 
  

   since 
  W 
  approximately 
  is 
  independent 
  of 
  the 
  nature 
  of 
  the 
  

   liquid. 
  If 
  we 
  take 
  the 
  mean 
  value 
  of 
  the 
  constant 
  as 
  1004*5 
  

   the 
  equation 
  for 
  the 
  internal 
  latent 
  heat 
  becomes 
  

  

  imp^ 
  

  

  1004-5. 
  

  

  This 
  equation 
  may 
  be 
  used 
  to 
  find 
  the 
  approximate 
  internal 
  

   latent 
  heat 
  of 
  evaporation 
  of 
  a 
  liquid. 
  

  

  Phil. 
  May. 
  S. 
  6. 
  Vol. 
  18. 
  Xo. 
  106. 
  Oct. 
  1909. 
  2 
  M 
  

  

  