﻿1875.] 
  Matter 
  in 
  the 
  Liquid 
  and 
  Gaseous 
  States. 
  517 
  

  

  liquefaction; 
  but 
  at 
  the 
  higher 
  temperatures, 
  which 
  were 
  considerably 
  

   above 
  the 
  critical 
  point 
  of 
  carbonic 
  acid, 
  there 
  was 
  no 
  limit 
  of 
  this 
  kind, 
  

   and 
  the 
  pressures 
  were 
  carried 
  as 
  far 
  as 
  223 
  atmospheres. 
  I 
  have 
  only 
  

   given 
  a 
  few 
  of 
  the 
  results 
  ; 
  but 
  they 
  will 
  be 
  sufficient 
  to 
  show 
  the 
  general 
  

   effects 
  of 
  the 
  pressure. 
  In 
  the 
  following 
  Tables 
  p 
  designates 
  the 
  pressure 
  

   in 
  atmospheres 
  as 
  given 
  by 
  the 
  air-manometer, 
  t' 
  the 
  temperature 
  of 
  the 
  

   carbonic 
  acid, 
  e 
  the 
  ratio 
  of 
  the 
  volume 
  of 
  the 
  carbonic 
  acid 
  under 
  one 
  atmo- 
  

   sphere 
  and 
  at 
  the 
  temperature 
  t' 
  to 
  its 
  volume 
  under 
  the 
  pressure 
  p' 
  and 
  

   at 
  the 
  same 
  temperature, 
  and 
  d 
  the 
  volume 
  to 
  which 
  one 
  volume 
  of 
  carbonic 
  

   acid 
  gas 
  measured 
  at 
  0° 
  and 
  760 
  millimetres 
  is 
  reduced 
  at 
  the 
  pressure 
  p 
  

   and 
  temperature 
  t' 
  . 
  

  

  

  Carbonic 
  Acid 
  at 
  6°-7. 
  

  

  

  p. 
  

  

  

  e. 
  

  

  0. 
  

  

  at. 
  

   13-22 
  

  

  6-90 
  

  

  1 
  

  

  14-36 
  

  

  0-07143 
  

  

  20-10 
  

  

  6-79 
  ..- 
  

  

  1 
  

  

  23-01 
  

  

  0-04456 
  

  

  24-81 
  

  

  6-73 
  

  

  1 
  

  

  .29-60 
  

  

  0-03462 
  

  

  31-06 
  

  

  6-62 
  

  

  1 
  

  

  0-02589 
  

  

  40-11 
  

  

  6-59 
  

  

  1 
  

  

  58-40 
  

  

  0-01754 
  

  

  

  Carbonic 
  Acid 
  at 
  63°'7. 
  

  

  

  p. 
  

  

  t\ 
  

  

  e. 
  

  

  e. 
  

  

  at. 
  

   16-96 
  

  

  63-97 
  

  

  1 
  

  

  17-85 
  

  

  0-06931 
  

  

  54-33 
  

  

  63-57 
  

  

  1 
  

  

  66-06 
  

  

  0-01871 
  

  

  106-88 
  

  

  63-75 
  

  

  1 
  

  

  185-9 
  

  

  0-00665 
  

  

  145-54 
  

  

  63-70 
  

  

  1 
  

  

  327-3 
  

  

  0-00378 
  

  

  222-92 
  

  

  63-82 
  

  

  1 
  

  

  44(5-9 
  

  

  0-00277 
  

  

  

  Carbonic 
  Acid 
  at 
  100°. 
  

  

  

  p. 
  

  

  t'. 
  

  

  e. 
  

  

  0. 
  

  

  at. 
  

   16-80 
  

  

  100-38 
  

  

  1 
  

  

  17-33 
  

  

  0-07914 
  

  

  53-81 
  

  

  100-33 
  

  

  1 
  

  

  60-22 
  

  

  0-02278 
  

  

  105-69 
  

  

  100-37 
  

  

  1 
  

  

  137-1 
  

  

  0-01001 
  

  

  145-44 
  

  

  99-46 
  

  

  1 
  

  

  218-9 
  

  

  0-00625 
  

  

  223-57 
  

  

  99-44 
  

  

  1 
  

  

  380-9 
  

  

  0-00359 
  

  

  