﻿WITH 
  SULPHUROUS 
  ACID. 
  359 
  

  

  reddish 
  colour. 
  Its 
  odour 
  recalls, 
  but 
  faintly, 
  that 
  of 
  cinnamon 
  ; 
  its 
  

   taste 
  is 
  bitter 
  and 
  disagreeable, 
  yet 
  recalling 
  that 
  of 
  the 
  oil 
  from 
  which 
  

   it 
  is 
  derived. 
  Its 
  aqueous 
  solution 
  does 
  not 
  redden 
  litmus 
  ; 
  nor, 
  when 
  

   acidulated 
  with 
  nitric 
  acid, 
  does 
  it 
  yield 
  a 
  precipitate 
  with 
  nitrate 
  of 
  

   barytes. 
  

  

  Of 
  this 
  substance 
  ten 
  grains 
  were 
  exposed 
  to 
  the 
  process 
  above 
  men- 
  

   tioned, 
  for 
  the 
  detection 
  of 
  sulphuric 
  acid, 
  and 
  were 
  found 
  to 
  yield 
  a 
  

   precipitate 
  of 
  6.5 
  grains 
  of 
  sulphate 
  of 
  barytes. 
  

  

  It 
  may 
  be 
  worth 
  while 
  to 
  mention, 
  that 
  in 
  boiling 
  the 
  sulphated 
  oils 
  

   with 
  nitric 
  acid, 
  compounds 
  are 
  formed 
  finally, 
  which 
  resist 
  the 
  further 
  

   action 
  of 
  the 
  acid, 
  and 
  are 
  only 
  to 
  be 
  decomposed 
  by 
  the 
  assistance 
  of 
  

   a 
  nitrate 
  and 
  deflagration. 
  I 
  conjecture 
  that 
  these 
  compounds 
  will 
  be 
  

   found 
  to 
  merit 
  classification 
  as 
  ethers 
  formed 
  by 
  an 
  oxacid 
  of 
  nitrogen. 
  

  

  One 
  of 
  my 
  pupils, 
  in 
  examining 
  one 
  of 
  the 
  compounds 
  thus 
  gene- 
  

   rated, 
  was, 
  as 
  he 
  conceived, 
  seriously 
  affected 
  by 
  it, 
  suffering 
  next 
  

   day 
  as 
  from 
  an 
  over 
  dose 
  of 
  opium. 
  He 
  also 
  conceived 
  that 
  a 
  cat, 
  to 
  

   which 
  a 
  small 
  quantity 
  was 
  given, 
  was 
  affected 
  in 
  like 
  manner. 
  

  

  I 
  had 
  prepared 
  an 
  apparatus 
  with 
  the 
  view 
  of 
  analyzing 
  accurately 
  

   the 
  various 
  compounds 
  above 
  described 
  or 
  alluded 
  to, 
  by 
  burning 
  them 
  

   in 
  oxygen 
  gas 
  ; 
  when, 
  by 
  an 
  enduring 
  illness 
  of 
  my 
  assistant, 
  and 
  sub- 
  

   sequently 
  my 
  own 
  indisposition, 
  I 
  was 
  prevented 
  from 
  executing 
  my 
  

   intentions. 
  

  

  vol. 
  v 
  4 
  Q 
  

  

  