﻿82 
  

  

  PR 
  ANDERSON 
  ON 
  CODEINE, 
  AND 
  

  

  soluble 
  in 
  water 
  and 
  dilute 
  spirit, 
  and 
  is 
  thrown 
  down 
  from 
  the 
  latter 
  solution 
  

   by 
  ether 
  in 
  the 
  form 
  of 
  fine 
  yellow 
  scales. 
  Its 
  analysis 
  gave 
  the 
  following 
  

   results 
  : 
  — 
  

  

  {8-723 
  grains, 
  dried 
  at 
  212°, 
  gave 
  

   1*753 
  ••• 
  of 
  carbonic 
  acid, 
  and 
  

   2-090 
  ... 
  of 
  water. 
  

  

  9-880 
  grains, 
  dried 
  at 
  212°, 
  gave 
  4-100 
  grains 
  of 
  platinum. 
  

   7734 
  ... 
  ... 
  3196 
  

  

  

  Es 
  

  

  periraent. 
  

  

  

  Calculation. 
  

  

  

  

  I. 
  

  

  II. 
  

  

  ^~ 
  

  

  

  " 
  "»\ 
  

  

  Carbon, 
  . 
  

  

  5-48 
  

  

  ... 
  

  

  506 
  

  

  C 
  2 
  

  

  12 
  

  

  Hydrogen, 
  

  

  2-66 
  

  

  ... 
  

  

  2-52 
  

  

  H 
  6 
  

  

  6 
  

  

  Nitrogen, 
  

  

  . 
  

  

  ... 
  

  

  5-90 
  

  

  N 
  

  

  14 
  

  

  Chlorine, 
  

  

  . 
  

  

  ... 
  

  

  44-91 
  

  

  C 
  h 
  

  

  106-5 
  

  

  Platinum, 
  

  

  41-49 
  

  

  41-32 
  

  

  41-61 
  

  

  Pt 
  

  

  98-7 
  

  

  10000 
  

  

  237-2 
  

  

  The 
  formula 
  of 
  the 
  salt 
  is 
  therefore 
  C., 
  H 
  5 
  N 
  H 
  CI 
  Pt 
  CI, 
  ; 
  and 
  the 
  base 
  is, 
  

   consequently, 
  the 
  methylamine 
  of 
  Wurtz, 
  with 
  whose 
  description 
  of 
  that 
  sub- 
  

   stance 
  and 
  its 
  platinum 
  salt 
  it 
  perfectly 
  agrees. 
  

  

  The 
  preparation 
  of 
  the 
  platinum 
  salt 
  of 
  the 
  other 
  base 
  was 
  attended 
  with 
  

   much 
  greater 
  difficulty 
  ; 
  and 
  I 
  did 
  not 
  succeed 
  in 
  obtaining 
  it 
  quite 
  free 
  from 
  

   methylamine. 
  In 
  order 
  to 
  obtain 
  it, 
  the 
  fluid 
  which 
  had 
  deposited 
  the 
  methyla- 
  

   mine 
  salt 
  was 
  evaporated 
  to 
  a 
  small 
  bulk, 
  the 
  salt 
  which 
  separated 
  filtered 
  off, 
  and 
  

   ether 
  added 
  to 
  the 
  mother-liquor. 
  Immediately 
  a 
  precipitate 
  is 
  obtained, 
  generally 
  

   in 
  the 
  form 
  of 
  minute 
  yellow-needles, 
  but 
  sometimes 
  in 
  scales. 
  It 
  is 
  sparingly 
  so- 
  

   luble 
  in 
  alcohol 
  and 
  ether, 
  and 
  highly 
  soluble 
  in 
  water, 
  from 
  which 
  it 
  crystallises 
  

   in 
  long 
  needles, 
  and 
  with 
  such 
  facility, 
  that 
  a 
  few 
  drops 
  evaporated 
  on 
  a 
  watch- 
  

   glass 
  leave 
  the 
  salt 
  they 
  contain 
  in 
  the 
  form 
  of 
  five 
  or 
  six 
  needles 
  crossing 
  the 
  

   whole 
  space 
  occupied 
  by 
  the 
  solution. 
  The 
  quantity 
  of 
  this 
  salt 
  which 
  I 
  had 
  at 
  

   my 
  disposal 
  was 
  too 
  small 
  to 
  admit 
  of 
  my 
  carrying 
  its 
  purification 
  by 
  recrystal- 
  

   lisation 
  as 
  far 
  as 
  was 
  to 
  be 
  desired, 
  and, 
  consequently, 
  a 
  small 
  quantity 
  of 
  methy- 
  

   lamine 
  remained 
  in 
  those 
  subjected 
  to 
  analysis. 
  

  

  {5-521 
  grains 
  of 
  platinum 
  salt, 
  dried 
  at 
  212°, 
  gave 
  

   2-485 
  ••• 
  of 
  carbonic 
  acid, 
  and 
  

   1-800 
  ••• 
  of 
  water. 
  

  

  10-475 
  grains 
  platinum 
  salt, 
  gave 
  3-951 
  grains 
  platinum. 
  

   6-475 
  ... 
  ... 
  2-432 
  

  

  

  Experirr 
  

   I. 
  

  

  ent. 
  

   II. 
  

  

  

  Calculation. 
  

  

  

  

  

  

  "~^ 
  

  

  Carbon, 
  . 
  

  

  12-27 
  

  

  

  13-57 
  

  

  c 
  6 
  

  

  36 
  

  

  Hydrogen, 
  

  

  3-62 
  

  

  • 
  . 
  • 
  

  

  3-77 
  

  

  H 
  10 
  

  

  10 
  

  

  Nitrogen, 
  

  

  

  ... 
  

  

  5-27 
  

  

  N 
  

  

  14 
  

  

  Chlorine, 
  

  

  

  

  40-18 
  

  

  C1 
  3 
  

  

  106-5 
  

  

  Platinum, 
  

  

  37-71 
  

  

  37-56 
  

  

  37-21 
  

  

  Pt 
  

  

  98-7 
  

  

  100-00 
  

  

  265-2 
  

  

  