﻿208 
  

  

  Mr. 
  E. 
  Haigh 
  on 
  Ortliobarlc 
  Volumes 
  in 
  

  

  Table 
  VII. 
  — 
  Critical 
  Constants 
  and 
  References. 
  

  

  Authority. 
  

  

  F'luorbenzene 
  (1) 
  

  

  | 
  Ether 
  (2) 
  

  

  Methyl 
  alcohol 
  (3) 
  

  

  Propyl 
  alcohol 
  (4) 
  

  

  Carbon 
  tetrachloride 
  (5) 
  

   Stannic 
  chloride 
  (5) 
  

  

  Isopentane 
  ... 
  

  

  p 
  in 
  mm. 
  

  

  t 
  Cent. 
  

  

  v 
  in 
  c.c. 
  

  

  33,912 
  

  

  280-55 
  

  

  2-8221- 
  

  

  27,060 
  

  

  194 
  

  

  3 
  801t 
  

  

  59,700 
  

  

  240 
  

  

  3-683* 
  

  

  38,120 
  

  

  2C4 
  

  

  3 
  634t 
  

  

  34,180 
  

  

  28315 
  

  

  1 
  799t 
  

  

  28,080 
  

  

  318-7 
  

  

  1-347+ 
  

  

  Young. 
  

   Ramsay 
  & 
  Young. 
  

  

  do. 
  

  

  do. 
  

   Young. 
  

  

  do. 
  

  

  Benzene 
  

  

  w-Pentane 
  ... 
  

   di-i 
  sop 
  ropy 
  1 
  

   di-isobutyl 
  . 
  . 
  . 
  

   ??-Hexane 
  ... 
  

   ^•Octane 
  ... 
  

  

  } 
  

  

  Hexamethylene. 
  

  

  Thermal 
  properties 
  of 
  Isopentane" 
  (Young. 
  

   Proc. 
  Physical 
  Soc. 
  vol. 
  xiii. 
  p. 
  657). 
  (Re- 
  

   duced 
  data.) 
  

  

  T 
  apour 
  pressures, 
  etc. 
  of 
  di-isopropyl 
  and 
  

   di-isobutyl 
  " 
  (Young 
  & 
  Fortey, 
  Jour. 
  Chem. 
  | 
  

   Soc. 
  Sept. 
  1900, 
  pp. 
  1141-42). 
  (Comparative 
  

   table 
  of 
  reduced 
  data.) 
  

  

  f 
  ' 
  Jour. 
  Chem. 
  Soc. 
  Sept. 
  1899, 
  p. 
  882 
  (Young 
  & 
  

   \ 
  i 
  Fortey). 
  

  

  (1) 
  Jour. 
  Chem. 
  Soc. 
  1889, 
  vol. 
  lr, 
  pp. 
  486-521. 
  

  

  (2) 
  Phil. 
  Trans. 
  1897 
  A, 
  p. 
  57 
  ct 
  seq. 
  " 
  A 
  study 
  of 
  the 
  thermal 
  properties 
  

   of 
  Ethyl 
  oxide." 
  (Ramsay 
  & 
  Young.) 
  

  

  (3) 
  Phil. 
  Trans. 
  18S7 
  A, 
  pp. 
  313-334. 
  " 
  Thermal 
  properties 
  of 
  Methyl 
  

   alcohol." 
  (Ramsay 
  & 
  Young.) 
  

  

  (4) 
  Phil. 
  Trans. 
  1889 
  A, 
  pp. 
  137-15S. 
  " 
  Thermal 
  properties 
  of 
  Propyl 
  

   alcohol." 
  (Ramsay 
  & 
  Young.) 
  

  

  (5) 
  Jour. 
  Chem. 
  Soc. 
  1891, 
  vol. 
  lix. 
  pp. 
  911-936. 
  

  

  f 
  See 
  Dr. 
  S.Young's 
  paper, 
  " 
  On 
  the 
  determination 
  of 
  the 
  Critical 
  Volume," 
  

   Phil. 
  Mag. 
  Dec. 
  1892, 
  p. 
  503. 
  

  

  * 
  See 
  paper 
  (3) 
  named 
  above, 
  Phil. 
  Trans. 
  1887 
  A, 
  p. 
  330. 
  

  

  ]N 
  r 
  OTES 
  OX 
  THE 
  TABLES. 
  

  

  Table 
  I. 
  — 
  Fluorbenzene 
  has 
  been 
  frequently 
  employed 
  by 
  Young 
  

   as 
  a 
  standard 
  substance 
  with 
  which 
  to 
  compare 
  the 
  properties 
  of 
  

   other 
  compounds 
  which 
  he 
  has 
  experimentally 
  investigated, 
  and 
  

   this 
  substance 
  was 
  selected 
  by 
  the 
  writer 
  (in 
  L895) 
  as 
  a 
  typical 
  

   example 
  for 
  detailed 
  study. 
  From 
  the 
  data 
  of 
  the 
  table 
  here 
  given 
  

   the 
  properties 
  of 
  a 
  very 
  large 
  number 
  of 
  functions 
  have 
  boon 
  

   examined, 
  and 
  from 
  these 
  results 
  equation 
  (1) 
  Mas 
  ultimately 
  

   obtained. 
  For 
  this 
  compound 
  the 
  deviations 
  from 
  the 
  normal 
  

   value. 
  2=16, 
  are 
  generally 
  small 
  and 
  irregular 
  in 
  sign. 
  It 
  is 
  only 
  

   in 
  the 
  near 
  neighbourhood 
  oi 
  the 
  critical 
  point, 
  where 
  the 
  experi- 
  

   mental 
  difficulties 
  are 
  greatest, 
  thai 
  the 
  deviation 
  exceeds 
  one 
  per 
  

   cent., 
  and 
  the 
  mean 
  deviation, 
  —'02, 
  is 
  only 
  a 
  small 
  traction 
  of 
  

   this 
  amount. 
  

  

  