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  OBSERVATIONS 
  ON 
  SULPHUROUS 
  ETHER 
  

  

  of 
  the 
  ethereal 
  sulphurous 
  sulphate 
  of 
  etherine 
  to 
  distillation, 
  and 
  ob- 
  

   tained 
  726 
  grains 
  of 
  sulphurous 
  ether, 
  which 
  boiled 
  as 
  soon 
  as 
  the 
  

   frigorific 
  mixture 
  was 
  removed 
  from 
  the 
  containing 
  retort. 
  This 
  

   being 
  redistilled, 
  as 
  in 
  a 
  former 
  experiment, 
  so 
  as 
  to 
  receive 
  the 
  product 
  

   in 
  ammonia, 
  left 
  in 
  the 
  retort 
  five 
  grains 
  of 
  oil 
  of 
  wine. 
  The 
  result- 
  

   ing 
  ammoniacal 
  liquid, 
  saturated 
  with 
  chloride 
  of 
  barium 
  in 
  solution, 
  

   gave 
  a 
  precipitate 
  which, 
  agreeably 
  to 
  the 
  table 
  of 
  equivalents, 
  con- 
  

   tained 
  356 
  grains 
  of 
  sulphurous 
  acid. 
  

  

  The 
  residue 
  of 
  the 
  2150 
  grains 
  of 
  ethereal 
  sulphate 
  being 
  subjected 
  

   to 
  distillation, 
  raising 
  the 
  temperature 
  from 
  95°, 
  the 
  point 
  at 
  which 
  it 
  

   had 
  been 
  before 
  discontinued, 
  to 
  140°, 
  the 
  product 
  obtained 
  by 
  means 
  

   of 
  a 
  refrigerated 
  receiver 
  weighed 
  602 
  grains. 
  This 
  was, 
  of 
  course, 
  

   inferior 
  in 
  volatility 
  to 
  the 
  first 
  portion 
  distilled 
  ; 
  and, 
  when 
  redistilled, 
  

   it 
  was 
  found 
  to 
  contain 
  a 
  small 
  quantity 
  of 
  oil 
  of 
  wine. 
  In 
  fact, 
  it 
  

   appears, 
  the 
  boiling 
  point 
  of 
  the 
  ethereal 
  sulphurous 
  sulphate 
  rises, 
  not 
  

   only 
  as 
  the 
  ratio 
  of 
  the 
  sulphurous 
  acid 
  lessens, 
  but 
  also 
  as 
  the 
  propor- 
  

   tion 
  of 
  oil 
  of 
  wine 
  augments. 
  

  

  The 
  residual 
  liquid 
  being 
  exposed 
  to 
  the 
  heat 
  of 
  a 
  water 
  bath 
  at 
  

   212° 
  ; 
  a 
  very 
  fragrant, 
  and 
  well 
  flavoured 
  oil 
  of 
  wine 
  was 
  evolved, 
  and 
  

   floated 
  upon 
  a 
  quantity 
  of 
  water 
  acidulated 
  by 
  sulphuric 
  or 
  sulpho- 
  

   vinic 
  acid. 
  

  

  Agreeably 
  to 
  another 
  experiment, 
  1750 
  grains 
  by 
  weight, 
  of 
  the 
  

   ethereal 
  sulphurous 
  sulphate 
  of 
  etherine, 
  after 
  washing 
  with 
  ammo- 
  

   nia, 
  gave 
  869 
  grains 
  of 
  an 
  ethereal 
  solution 
  of 
  oil 
  of 
  wine. 
  This 
  be- 
  

   ing 
  subjected 
  to 
  distillation 
  by 
  a 
  water 
  bath 
  raised 
  gradually 
  to 
  190°, 
  

   there 
  remained 
  in 
  the 
  retort 
  148 
  grains 
  of 
  oil, 
  beneath 
  which 
  there 
  

   were 
  a 
  few 
  drops 
  of 
  acidulated 
  water. 
  Agreeably 
  to 
  the 
  result 
  of 
  

   several 
  experiments, 
  the 
  ethereal 
  sulphurous 
  sulphate 
  of 
  etherine 
  

   yields 
  about 
  half 
  its 
  weight 
  of 
  the 
  ethereal 
  solution 
  of 
  oil 
  of 
  wine. 
  

   The 
  quantity 
  is 
  always 
  somewhat 
  less 
  than 
  half 
  when 
  weighed 
  ; 
  but 
  

   the 
  deviation 
  is 
  not 
  greater 
  than 
  might 
  be 
  expected 
  to 
  result 
  from 
  the 
  

   loss 
  by 
  evaporation, 
  and 
  the 
  diversity 
  of 
  refrigeration 
  employed 
  in 
  the 
  

   condensation 
  of 
  the 
  ethereal 
  sulphurous 
  sulphate, 
  during 
  the 
  process 
  

   by 
  which 
  it 
  is 
  evolved. 
  

  

  Under 
  the 
  expectation 
  of 
  procuring 
  a 
  sulphurous 
  ether 
  of 
  a 
  still 
  

   higher 
  degree 
  of 
  volatility, 
  I 
  associated 
  with 
  the 
  apparatus 
  usually 
  

  

  