﻿498 
  

  

  Dr. 
  R. 
  D. 
  Kleeman 
  

  

  on 
  some 
  

  

  that 
  at 
  corresponding 
  states 
  the 
  surface-tensions 
  o£ 
  different 
  

   liquids 
  are 
  equal 
  to 
  the 
  same 
  fraction 
  of 
  their 
  surface-tension 
  

   at 
  absolute 
  zero. 
  Then 
  the 
  ratio 
  of 
  the 
  surface-tensions 
  of 
  a 
  

   liquid 
  at 
  two 
  different 
  temperatures 
  is 
  the 
  same 
  for 
  all 
  liquids, 
  

   if 
  corresponding 
  temperatures 
  are 
  taken. 
  Table 
  VI. 
  bears 
  

  

  Table 
  VI. 
  

  

  ■Name 
  of 
  liquid. 
  

  

  

  

  

  

  Ether 
  

  

  1-153 
  

   1-152 
  

   1-173 
  

   1-150 
  

   1-174 
  

  

  1-430 
  

   1-421 
  

   1-412 
  

   1-422 
  

   1-416 
  

  

  2-146 
  

   2-111 
  

   2-086 
  

   2-119 
  

   2-112 
  

  

  3-996 
  

   3-913 
  

   3-828 
  

   3-818 
  

   3-891 
  

  

  Methyl 
  formate 
  

  

  Carbon 
  tetrachloride 
  ... 
  

   Benzene 
  

  

  Chloro 
  benzene 
  

  

  

  this 
  out 
  exceedingly 
  well. 
  The 
  variation 
  of 
  the 
  surface-tension 
  

   of 
  liquids 
  with 
  the 
  temperature 
  is 
  more 
  simply 
  and 
  intelligibly 
  

   expressed 
  in 
  this 
  way 
  than 
  by 
  equation 
  (5). 
  

   The 
  equations 
  

  

  E 
  = 
  X-T^, 
  X=/^Xo, 
  T=/3T^, 
  

  

  when 
  combined 
  yield 
  

   E 
  

   This 
  shows 
  that 
  

  

  '^•{"-"i} 
  

  

  -H'-^^} 
  « 
  

  

  At 
  corresponding 
  temperatures 
  the 
  right-hand 
  side 
  is 
  the 
  

   same 
  for 
  all 
  liquids, 
  a 
  result 
  which 
  has 
  been 
  shown 
  to 
  be 
  

   trrje 
  directly 
  (Table 
  II.). 
  

  

  We 
  can 
  now 
  find 
  an 
  expression 
  for 
  k! 
  from 
  equations 
  (2) 
  

   and 
  (7). 
  We 
  have 
  

  

  E 
  

  

  P' 
  (^Cay-pc 
  

  

  

  We 
  have 
  seen 
  that 
  k' 
  is 
  a 
  function 
  which 
  has 
  the 
  same 
  

   value 
  for 
  different 
  liquids 
  at 
  corresponding 
  temperatures. 
  It 
  

  

  