370 
Jamhul. 
Am.  Jonr.  Pharm. 
July,  1888. 
II.  Ether  Extract. — The  seed  residue  from  I.,  after  being  well 
washed  with  petroleum  ether  and  dried  by  exposure  to  the  air,  was 
macerated  with  about  70  cc.  of  ether  for  forty-eight  hours  with  fre- 
quent agitation.  The  clear  liquid  being  poured  off  and  the  residue 
thrown  upon  a  filter,  filtration  was  continued  with  fresh  ether  until 
the  filtrate  measured  100  cc.  of  the  latter,  which  was  of  a  bright  yel- 
low color ;  20  cc.  upon  evaporation  left  a  dark  colored  resinous  resi- 
due weighing  '014  gr.=*4  per  cent. 
The  ether  residue  is  perfectly  soluble  in  alcohol,  and  partially  in 
water.  Extracted  with  water,  the  aqueous  filtrate  develops  a  dark 
color  with  potash,  is  precipitated  by  acetate  of  lead,  yields  an  inky 
mixture  with  ferric  and  ferrous  salts,  is  not  precipitated  by  solution  of 
gelatin,  and  after  having  been  boiled  with  a  little  dilute  sulphuric 
acid  copiously  reduces  alkaline  copper  solution,  reactions  indicating 
the  presence  of  gallic  acid. 
Further  experiments  showed  that  water  dissolved  from  the  water- 
bath  dried  extract  an  amount  equivalent  to  O'l  per  cent. 
III.  Alcokol  Extract. — The  seed  residue  from  IL,  washed  with 
ether  and  dried,  was  exhausted  with  absolute  alcohol  according  to 
the  above  method,  the  finished  product  measuring  100  cc.  Of  the 
latter,  20  cc.  evaporated  to  dryness  yielded  a  bro^vn  residue  of  0'035 
gr.=rO.<S  per  cent.,  which  was  perfectly  soluble  in  water  ;  the  aqueous 
solution  gave  negative  results  with  alkaloidal  reagents,  and  towards 
others,  results  were  obtained  with  lead  acetate,  ferric  chloride,  gela- 
tin, and  alkaline  copper  solution  as  in  II.,  indicating  the  presence  of 
the  same  body. 
IV.  — The  seed  residue  from  III.,  exhausted  with  water  according 
to  above  method,  and  20  cc.  of  the  finished  product  evoporated  to 
dryness  on  a  water-bath  weighed  0-19  gr.=4'7  per  cent.  The  liquid 
extract  was  of  a  dark  sherry  color ;  20  cc.  mixed  with  twice  the  volume 
of  absolute  alcohol,  set  aside  for  twenty-four  hours,  filtered  and  the 
residue  left  in  the  filter  washed  with  a  mixture  of  alcohol  and  water 
(two  vols,  to  one)  weighed  0'05  gr.=r25  per  cent,  of  albuminous 
matters.  The  filtrate  was  evaporated  until  free  from  alcohol,  and 
shaken  twice  with  an  equal  volume  of  acetic  ether.  The  ethereal 
layers  being  removed  and  the  ether  distilled  off,  left  a  colored  residue 
weighing  0*03  gr.=rO*75  per  cent.,  consisting  essentially  of  gallic  acid. 
According  to  the  above,  we  arrive  at  the  following  proximate  com- 
position of  jambul : — 
