i66 
The  Chemistry  of  Opium. 
Am.  Jour.  Pharm. 
April,  1891. 
nearly  pure  white  in  color.  When  weighed  it  yielded  3-89  per 
cent,  of  the  original  substance: 
Platinum  dish  -(-  ash,  =  61*6052  gr. 
"         "    alone,  .  .  .  =  60*8281  gr. 
Hence,  ash  alone,  ==  07771  gr. 
and  20  :  0*7771  =  100  :  x    whence  x  =  3*89  per  cent. 
A  complete  analysis,  the  details  of  which  it  would  be  useless  to 
enumerate  here,  gave  the  following  results,  these  being  expressed 
in  per  cent,  of  the  ash  weighed  : 
Per  Cent. 
Si02,   11*14 
P205)   8*07 
so3,    28-39 
Fe203,   1*98 
CaO   9*04 
MgO,  •   831 
K20,   30*19 
COo,  HC1  and  not  determined  constituents,    2*88 
ioo*oo 
The  dialysate  was  next  evaporated  down  in  portions  to  about  two 
litres  upon  a  water-bath  and  the  resulting  deposit,  consisting  of  color- 
ing and  other  organic  matter,  as  well  as  some  calcium  meconate, 
removed  by  filtration.  The  filtrate  reacted  acid  to  litmus 
and  in  it  were  detected  morphine,  narcotine,  narceine,  codeine, 
sulphuric  and  meconic  acids.  It  was  next  acidified  with 
hydrochloric  acid,  and  after  heating  on  the  water-bath  was 
treat  cj  with  a  boiling  solution  of  barium  chloride  in  excess.  After 
standing  over  night  the  resulting  barium  sulphate  was  filtered  off 
and  washed  out  with  hot  water  containing  hydrochloric  acid  until 
it  was  white.  It  was  then  dried,  ignited  and  weighed  and  yielded, 
with  the  portion  that  was  similarly  treated  separately,  the  following 
figures : 
Portion    I — BaS04,   2  9236  grams. 
Portion  II —     "   0*3920  " 
Total,   =  3*3156 
Equivalent  to  I  T'3945  grams  H2S04,  \ 
equivalent  to  -|orI.I3g4     «     Sq3  ] 
The  filtrate  from  this  precipitate  was  neutralized  and  precipitated 
in  the  cold  with  ammonia  which  was  added  in  slight  excess.  After 
standing  for  several  days  the  precipitated  alkaloids  were  filtered  off 
