﻿374 
  

  

  DR 
  ANDERSON 
  S 
  RESEARCHES 
  ON 
  SOME 
  OF 
  THE 
  

  

  purpose 
  of 
  indicating 
  the 
  great 
  complexity 
  of 
  the 
  decomposition 
  which 
  nitric 
  acid 
  

   produces. 
  

  

  When 
  the 
  solution 
  containing 
  alcohol 
  and 
  ether, 
  from 
  which 
  the 
  apophyllic 
  

   acid 
  has 
  been 
  precipitated, 
  is 
  distilled, 
  a 
  syrupy 
  residue 
  of 
  a 
  more 
  or 
  less 
  dark- 
  

   brown 
  colour 
  is 
  left, 
  which, 
  on 
  the 
  addition 
  of 
  caustic 
  potass, 
  immediately 
  evolves 
  

   the 
  odour 
  of 
  a 
  volatile 
  base. 
  In 
  order 
  to 
  obtain 
  this 
  substance 
  a 
  considerable 
  

   excess 
  of 
  potass 
  was 
  employed 
  and 
  the 
  liquid 
  distilled. 
  A 
  highly 
  alkaline 
  fluid 
  

   passed 
  into 
  the 
  receiver 
  which 
  gave 
  abundant 
  fumes 
  with 
  hydrochloric 
  acid, 
  and 
  

   rapidly 
  restored 
  the 
  blue 
  of 
  reddened 
  litmus. 
  In 
  this 
  fluid, 
  ammonia 
  and 
  one 
  or 
  

   two 
  other 
  bases 
  are 
  always 
  present. 
  For 
  the 
  separation 
  of 
  the 
  former 
  the 
  fluid 
  is 
  

   supersaturated 
  with 
  hydrochloric 
  acid 
  evaporated 
  to 
  dryness, 
  and 
  extracted 
  with 
  

   absolute 
  alcohol 
  at 
  the 
  boiling 
  temperature. 
  The 
  filtered 
  solution 
  deposits 
  on 
  

   cooling 
  traces 
  of 
  sal 
  ammoniac, 
  which 
  are 
  dissolved 
  even 
  in 
  absolute 
  alcohol. 
  The 
  

   alcohol, 
  on 
  distillation, 
  leaves 
  a 
  salt 
  in 
  fine 
  scales, 
  which 
  gives, 
  with 
  bichloride 
  of 
  

   platinum, 
  a 
  yellow 
  precipitate 
  soluble 
  in 
  boiling 
  water, 
  and 
  deposited, 
  on 
  cooling, 
  

   in 
  fine 
  golden-yellow 
  scales, 
  and 
  sometimes 
  needles. 
  

  

  {9*375 
  grains 
  of 
  platinum 
  salt, 
  dried 
  at 
  212°, 
  gave 
  

   1492 
  ... 
  carbonic 
  acid, 
  and 
  

   2-098 
  ... 
  water. 
  

  

  f 
  9-275 
  grains 
  of 
  platinum 
  salt 
  gave 
  

   \ 
  3-878 
  ... 
  platinum. 
  

  

  

  Experiment. 
  

   4-34 
  

  

  Calculation. 
  

  

  

  Carbon, 
  

  

  ^•05 
  

  

  c 
  2 
  

  

  12 
  

  

  Hydrogen, 
  

  

  2-48 
  

  

  2-52 
  

  

  H 
  6 
  

  

  6 
  

  

  Nitrogen, 
  '. 
  

  

  . 
  

  

  5-93 
  

  

  N 
  

  

  14 
  

  

  Chlorine, 
  

  

  

  44-89 
  

  

  ci 
  8 
  

  

  106-5 
  

  

  Platinum, 
  

  

  41-81 
  

  

  41-61 
  

  

  Pt 
  

  

  98-7 
  

  

  100-00 
  

  

  237-2 
  

  

  These 
  results 
  correspond 
  with 
  the 
  formula 
  C 
  2 
  H. 
  N 
  HC1 
  Pt 
  Cl 
  2 
  , 
  and 
  indicate 
  the 
  

   presence 
  of 
  methylamine. 
  

  

  In 
  another 
  experiment 
  a 
  platinum 
  salt 
  was 
  obtained 
  which 
  gave, 
  — 
  

  

  {9-075 
  grains 
  of 
  platinum 
  salt 
  gave 
  

   2-615 
  ... 
  carbonic 
  acid, 
  and 
  

   2-098 
  ... 
  water. 
  

  

  ("8-475 
  grains 
  of 
  platinum 
  salt 
  gave 
  

  

  \ 
  3-360 
  

  

  platinum. 
  

  

  

  

  

  Experiment. 
  

   7-84 
  

  

  Calculation. 
  

  

  

  Carbon, 
  

  

  9-55 
  C 
  4 
  

  

  24 
  

  

  Hydrogen, 
  

  

  2-84 
  

  

  2-78 
  H 
  8 
  

  

  8 
  

  

  Nitrogen, 
  

  

  

  5-99 
  N 
  

  

  14 
  

  

  Chlorine, 
  

  

  

  42-39 
  Cl 
  3 
  

  

  106-5 
  

  

  Platinum, 
  

  

  39-64 
  

  

  39-29 
  Pt 
  

  

  98-7 
  

  

  100-00 
  

  

  251-2 
  

  

  