﻿CRYSTALLINE 
  CONSTITUENTS 
  OF 
  OPIUM. 
  373 
  

  

  f 
  4-522 
  

   { 
  2-984 
  

  

  grains 
  of 
  the 
  double 
  salt 
  gave 
  

  

  

  

  silver. 
  

  

  

  

  

  

  Experiment. 
  

  

  20-92 
  

  

  Calculation. 
  

  

  

  Carbon, 
  

  

  20-95 
  

  

  C 
  10 
  

  

  96 
  

  

  Hydrogen, 
  

  

  3-20 
  

  

  1-30 
  

  

  H« 
  

  

  6 
  

  

  Nitrogen, 
  

  

  

  6-11 
  

  

  N 
  2 
  

  

  28 
  

  

  Oxygen, 
  

  

  ... 
  

  

  24-44 
  

  

  <>14 
  

  

  122 
  

  

  Silver, 
  

  

  49-70 
  

  

  47-20 
  

  

  Ag 
  2 
  

  

  216-2 
  

  

  100-00 
  458-2 
  

  

  This 
  analysis, 
  though 
  far 
  from 
  correct, 
  gives 
  a 
  sufficient 
  approximation 
  to 
  

   theory 
  to 
  shew 
  that 
  the 
  substance 
  actually 
  is 
  a 
  double 
  compound, 
  and 
  the 
  presence 
  

   of 
  nitric 
  acid 
  in 
  it 
  can 
  be 
  easily 
  demonstrated. 
  

  

  A'pophyllate 
  of 
  Ammonia. 
  — 
  When 
  apophyllic 
  acid 
  is 
  digested 
  with 
  ammonia, 
  

   and 
  the 
  solution 
  evaporated, 
  this 
  salt 
  is 
  left 
  in 
  small 
  prismatic 
  crystals. 
  Of 
  this, 
  

   a 
  nitrogen 
  determination 
  gave 
  a 
  number 
  too 
  low 
  for 
  the 
  formula 
  of 
  a 
  neutral 
  apo- 
  

   phyllate, 
  but 
  approximating 
  to 
  it. 
  

  

  Apopliyllate 
  of 
  Baryta 
  is 
  obtained 
  by 
  digesting 
  the 
  acid 
  with 
  carbonate 
  of 
  

   baryta. 
  It 
  is 
  highly 
  soluble 
  in 
  water, 
  and 
  is 
  precipitated 
  by 
  strong 
  alcohol 
  in 
  wart- 
  

   like 
  crystals. 
  

  

  Associated 
  with 
  apophyllic 
  acid, 
  another 
  substance 
  was 
  obtained 
  on 
  one 
  occa- 
  

   sion 
  in 
  small 
  quantity. 
  It 
  occurs 
  in 
  the 
  form 
  of 
  yellow 
  needle-shaped 
  crystals, 
  

   which 
  have 
  an 
  acid 
  reaction 
  and 
  are 
  readily 
  soluble 
  in 
  water. 
  They 
  fuse 
  on 
  the 
  

   application 
  of 
  heat 
  into 
  a 
  yellow 
  fluid, 
  which 
  solidifies 
  on 
  cooling 
  into 
  a 
  crystalline 
  

   mass. 
  Its 
  analysis 
  gave 
  these 
  results 
  : 
  — 
  

  

  {4*857 
  grains, 
  dried 
  at 
  212°, 
  gave 
  

   10-907 
  ... 
  carbonic 
  acid, 
  and 
  

   1-723 
  ... 
  water. 
  

  

  f 
  4-755 
  grains, 
  dried 
  at 
  212°, 
  gave 
  

  

  \ 
  3*155 
  ... 
  platinochloride 
  of 
  ammonium. 
  

  

  Experiment. 
  Calculation. 
  

  

  Carbon, 
  . 
  . 
  61*24 
  60-85 
  C 
  36 
  216 
  

  

  Hydrogen, 
  . 
  . 
  3-94 
  3-66 
  H 
  13 
  13 
  

  

  Nitrogen, 
  . 
  . 
  4-16 
  3-94 
  N 
  14 
  

  

  Oxygen, 
  . 
  . 
  30-66 
  31-55 
  O 
  u 
  112 
  

  

  100*00 
  100-00 
  355 
  

  

  The 
  formula 
  approximating 
  most 
  nearly 
  to 
  these 
  numbers 
  is 
  C 
  3G 
  H 
  13 
  N0 
  14 
  ; 
  

   but 
  I 
  have 
  been 
  unable, 
  from 
  want 
  of 
  material, 
  to 
  confirm 
  them 
  by 
  additional 
  

   analyses 
  or 
  determinations 
  of 
  atomic 
  weight. 
  

  

  On 
  another 
  occasion, 
  a 
  substance 
  was 
  obtained 
  which 
  presented 
  no 
  marked 
  

   differences 
  from 
  the 
  last, 
  but 
  which 
  contained 
  55*80 
  of 
  carbon 
  and 
  3'94 
  of 
  hydro- 
  

   gen. 
  There 
  was 
  not 
  a 
  sufficient 
  quantity 
  for 
  a 
  nitrogen 
  determination. 
  These 
  

   matters 
  will 
  require 
  a 
  further 
  investigation, 
  and 
  I 
  only 
  refer 
  to 
  them 
  here 
  for 
  the 
  

  

  