282 
I  Hie  lam  Floi  idanum . 
f  Am.  Jour.  Pharm. 
\      June,  1885. 
2.  Ether  extraction. — The  powder  was  next  treated  with  ether. 
The  portion  soluble  in  ether  amounted  to  0*23  per  cent.  The  extract 
was  sohible  in  alcohol,  and  in  aqueous  and  alcoholic  solution  of  sodiuui 
hydrate.    Its  reactions  show  it  to  be  an  acid  resin. 
3.  Absolute  alcohol  maceration. — Absolute  alcohol  was  the  next 
solvent  used  for  maceration.  The  soluble  portion  amounted  to  1'9 
per  cent.,  of  which  1-687  was  soluble  in  water,  '211  soluble  in  dilute 
ammonia,  leaving  '002  as  insoluble  in  either.  The  extract  was  astringent 
but  not  bitter.  Tannic  acid  .was  present  to  the  amount  of  0*54  per 
cent. 
4.  Aqueous  extraction. — The  ])Owder  remaining  from  the  foregoing 
macerations  was  treated  with  the  necessary  quantity  of  water.  The 
precipitate  obtained  by  the  addition  of  alcohol  amounted  to  1*8  per 
cent.  There  was  an  acid  present,  but  on  account  of  decomposition  of 
the  liquid  it  conld  not  be  estimated,  although  the  reactions  show  it  to 
be  tannic  acid. 
5.  Alkaline  extraction. — The  powder  was  next  treated  with  a  0*2 
per  cent,  sohition  of  sodium  hydrate.  A  part  of  this  solution  was 
neutralized  with  acetic  acid  and  subsequently  alcohol  added;  the 
resulting  precipitate  amounted  to  0*9  per  cent ;  the  total  extract  being 
ecjual  to  5  per  cent. 
(3.  Acid  maceration. — The  powder  insoluble  in  the  above  extractions 
was  next  treated  with  diluted  hydrochloric  acid  of  about  2  per  cent, 
strength.  A  portion  of  this  liquid  was  neutralized  with  ammonia. 
The  resulting  precipitate  amounted  to  0*24  per  cent.,  the  total  extract 
amounting  to  1*88  per  cent,  and  containing  some  iron.  The  remain- 
ing insoluble  powder  after  bleaching  weighed  64*005  per  cent. 
Root  barh. — The  moisture  of  the  bark  amounted  to  13*865  per  cent, 
and  the  ash  to  5*7  per  cent.    The  solubilities  of  the  ash  were  as  follows  : 
Soluble  in  water   -334 
Soluble  in  hydrochloric  acid  2-833 
Insoluble  in  either  (silica)  2  533 
  5-700  per  cent. 
The  qualitative  analysis  resulted  as  follows  :  Acids  :  sulphuric  and 
phosphoric;  Bases  :  aluminium, calcium,  magnesium,  potassium,  sodium. 
1.  Petroleum  extraction. — The  powder  was  extracted  with  petroleum 
as  in  the  previous  analyses.  The  soluble  portion  amounted  to  2*60 
per  cent.,  of  which  0*11  per  cent,  was  volatile  oil  and  the  remainder 
2*49  per  cent,  fat  and  a  crystalline  principle.   The  latter  melts  at  110° 
