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  DR 
  ANDERSON 
  ON 
  THE 
  DISTILLATION 
  OF 
  ANIMAL 
  SUBSTANCES. 
  

  

  series. 
  These 
  pyrrol 
  bases 
  I 
  conceive, 
  therefore, 
  to 
  be 
  substances 
  formed 
  by 
  the 
  

   coupling 
  of 
  the 
  picoline 
  series 
  with 
  some 
  substance 
  which 
  yields 
  the 
  red 
  matter 
  

   to 
  which 
  I 
  have 
  alluded. 
  I 
  have 
  not 
  as 
  yet, 
  however, 
  pursued 
  the 
  investigation 
  

   of 
  these 
  bases, 
  but 
  shall 
  communicate 
  the 
  result 
  of 
  their 
  examination 
  in 
  a 
  future 
  

   paper. 
  

  

  The 
  Non-basic 
  Constituents 
  of 
  Bone 
  Oil. 
  

  

  I 
  have 
  as 
  yet 
  directed 
  very 
  little 
  attention 
  to 
  this 
  branch 
  of 
  the 
  subject. 
  I 
  

   have 
  found, 
  however, 
  that 
  when 
  the 
  most 
  volatile 
  part 
  of 
  the 
  oil, 
  after 
  sepa- 
  

   ration 
  of 
  the 
  bases, 
  is 
  repeatedly 
  rectified, 
  it 
  improves 
  in 
  odour, 
  and 
  at 
  length 
  

   there 
  is 
  obtained 
  a 
  substance 
  which, 
  when 
  acted 
  upon 
  by 
  nitric 
  acid, 
  and 
  then 
  by 
  

   sulphide 
  of 
  ammonium, 
  gives 
  the 
  reaction 
  of 
  aniline, 
  — 
  indicative 
  of 
  the 
  presence 
  of 
  

   benzine 
  in 
  the 
  oil. 
  It 
  is 
  probable, 
  therefore, 
  that 
  this 
  series 
  of 
  homologous 
  carbo- 
  

   hydrogens 
  forms 
  a 
  part 
  of 
  the 
  oil, 
  but 
  not 
  the 
  whole 
  of 
  it, 
  for 
  I 
  have 
  found 
  that 
  

   when 
  the 
  oil 
  is 
  boiled 
  for 
  some 
  time 
  with 
  potass, 
  ammonia 
  is 
  evolved, 
  and 
  on 
  

   supersaturating 
  the 
  potash 
  solution 
  with 
  sulphuric 
  acid, 
  the 
  odour 
  of 
  butyric 
  acid, 
  

   or 
  at 
  all 
  events 
  of 
  one 
  of 
  the 
  fatty 
  acids, 
  becomes 
  apparent 
  ; 
  from 
  which 
  phenomena 
  

   I 
  draw 
  the 
  conclusion 
  that 
  it 
  also 
  contains 
  the 
  nitriles 
  of 
  these 
  acids. 
  

  

  