﻿254 
  DR 
  ANDERSON 
  ON 
  THE 
  PRODUCTS 
  OF 
  THE 
  

  

  less, 
  and 
  does 
  not 
  become 
  coloured 
  by 
  exposure 
  to 
  the 
  air. 
  It 
  dissolves 
  in 
  water 
  

   in 
  all 
  proportions, 
  and 
  is 
  also 
  readily 
  soluble 
  both 
  in 
  the 
  fixed 
  and 
  volatile 
  oils. 
  

   It 
  dissolves 
  in 
  the 
  concentrated 
  acids, 
  with 
  the 
  evolution 
  of 
  much 
  heat, 
  and 
  the 
  

   formation 
  of 
  highly 
  soluble 
  salts. 
  When 
  bichloride 
  of 
  platinum 
  is 
  added 
  to 
  a 
  

   solution 
  of 
  its 
  hydrochlorate, 
  a 
  double 
  salt 
  is 
  slowly 
  deposited 
  in 
  flattened 
  prisms, 
  

   which 
  are 
  tolerably 
  soluble 
  in 
  boiling 
  water, 
  less 
  so 
  in 
  alcohol, 
  and 
  entirely 
  insoluble 
  

   in 
  ether. 
  When 
  these 
  crystals 
  are 
  boiled 
  for 
  a 
  considerable 
  time 
  in 
  water, 
  they 
  

   appear 
  to 
  undergo 
  decomposition, 
  with 
  the 
  formation 
  of 
  a 
  platinum 
  salt, 
  crystal- 
  

   lizing 
  in 
  golden 
  scales. 
  Two 
  analyses 
  of 
  this 
  salt 
  were 
  made, 
  one 
  upon 
  the 
  sub- 
  

   stance 
  simply 
  precipitated 
  from 
  the 
  hydrochlorate 
  ; 
  the 
  other 
  was 
  the 
  same 
  salt 
  

   redissolved 
  in 
  hot 
  water, 
  so 
  as 
  to 
  leave 
  a 
  considerable 
  proportion 
  undissolved. 
  In 
  

   the 
  last 
  analysis 
  the 
  salt 
  was 
  mixed 
  with 
  the 
  chromate 
  of 
  lead 
  when 
  still 
  rather 
  

   hot, 
  and 
  it 
  immediately 
  evolved 
  a 
  strong 
  smell 
  of 
  the 
  base, 
  which 
  accounts 
  for 
  

   the 
  loss 
  of 
  carbon 
  obtained 
  in 
  the 
  experiment. 
  

  

  (8-234 
  grains 
  of 
  the 
  platinochloride 
  gave 
  

   6*486 
  ... 
  of 
  carbonic 
  acid, 
  and 
  

   1-705 
  ... 
  of 
  water. 
  

  

  C 
  5-396 
  grains 
  of 
  the 
  platinochloride 
  gave 
  

   II. 
  < 
  4-015 
  ... 
  of 
  carbonic 
  acid, 
  and 
  

   I 
  1-091 
  ... 
  of 
  water. 
  

  

  8-138 
  grains 
  platinochloride 
  gave 
  2-792 
  grains 
  platinum. 
  

   4-956 
  ... 
  .» 
  1-703 
  

  

  

  Experiment. 
  

  

  21-48 
  20-29 
  

  

  Calculation. 
  

  

  

  Carbon, 
  

  

  21-03 
  

  

  ^10 
  

  

  60 
  

  

  Hydrogen, 
  

  

  2-30 
  

  

  2-24 
  

  

  2-10 
  

  

  H 
  6 
  

  

  6 
  

  

  Nitrogen, 
  

  

  

  

  4-93 
  

  

  N 
  

  

  14 
  

  

  Chlorine, 
  

  

  

  

  37-34 
  

  

  Cl 
  3 
  

  

  106-5 
  

  

  Platinum, 
  

  

  34-30 
  

  

  34-56 
  

  

  34-60 
  

  

  Pt 
  

  

  98-7 
  

  

  100-00 
  285-2 
  

  

  The 
  formula 
  C 
  10 
  H 
  5 
  N, 
  HC1, 
  Pt 
  Cl 
  2 
  agrees 
  very 
  closely 
  with 
  these 
  analyses 
  ; 
  

  

  and 
  the 
  salt 
  is 
  consequently 
  that 
  of 
  a 
  base 
  having 
  the 
  formula 
  C 
  10 
  H 
  5 
  N, 
  which 
  

  

  forms 
  a 
  term 
  of 
  the 
  picoline 
  series. 
  I 
  have 
  not 
  as 
  yet 
  directed 
  further 
  attention 
  

  

  to 
  this 
  base, 
  as 
  the 
  phenomena 
  observed 
  in 
  the 
  examination 
  of 
  the 
  next 
  base 
  

  

  served 
  to 
  shew 
  that, 
  notwithstanding 
  the 
  correspondence 
  of 
  the 
  salt 
  with 
  theory, 
  

  

  much 
  difficulty 
  would 
  be 
  experienced 
  in 
  obtaining 
  the 
  base 
  itself 
  in 
  a 
  state 
  of 
  

  

  purity. 
  

  

  Lutidine. 
  

  

  In 
  the 
  fraction 
  boiling 
  about 
  310°, 
  a 
  base 
  occurs 
  which 
  possesses 
  precisely 
  the 
  

   constitution 
  of 
  toluidine, 
  and 
  to 
  which 
  I 
  give 
  the 
  name 
  of 
  lutidine. 
  When 
  in 
  the 
  

   distillation 
  of 
  the 
  mixed 
  bases 
  the 
  temperature 
  rises 
  to 
  about 
  305° 
  to 
  310°, 
  more 
  

   distinct 
  indications 
  of 
  a 
  fixed 
  boiling 
  point 
  are 
  obtained 
  than 
  at 
  any 
  other 
  tem- 
  

   perature, 
  and 
  the 
  base 
  which 
  distils 
  presents 
  sufficiently 
  distinct 
  characters 
  from 
  

   those 
  obtained 
  at 
  lower 
  points. 
  The 
  product 
  is 
  now 
  much 
  less 
  soluble 
  in 
  water 
  ; 
  

  

  