Am.  Jour.  Pharm. ' 
November,  1895.  . 
Australian  Myrtacecus  Kinos. 
579 
coriaria),  and  with  the  precipitate  from  the  kino  of  Angophora  lan- 
ceolata,  prepared  exactly  in  the  same  way,  namely,  by  concentrating 
a  solution  of  the  material  in  alcohol,  pouring  into  water,  filtering, 
washing,  dissolving  in  alcohol,  again  filtering,  and  evaporating  to 
dryness.  • 
ELLAGIC  ACID  FROM  DIVI-DIVI. . 
Strong  HNOs  dissolves  with  reddish 
to  crimson  color  ;  on  adding  H20,  light 
yellow  is  produced. 
Fuming  HN03  dissolves,  forming  a 
red  color,  not  so  crimson  as  preceding. 
KOH  dissolves  dark  yellow. 
H2S04  dissolves  instantly  to  a  beau- 
tiful purple,  becoming  purplish  black 
on  standing. 
Boiled  with  H20,  very  little  dis- 
solves ;  the  solution,  when  treated 
with  Fe2Cl6,  gives  a  purple  color, 
changing  to  blackish  (ink). 
The  dried  powder,  placed  in  Fe2Cl6 
solution,  soon  becomes  bluish  black  ; 
on  standing,,  becomes  more  black. 
When  a  solution  in  alcohol  is  evap- 
orated, a  crystalline  deposit  is  formed, 
easily  seen  under  the  microscope. 
REPUTED     EEEAGIC    ACID  FROM 
ANGOPHORA  EANCEOL,  ATA . 
Strong  HN03  slightly  dissolves, 
forming  a  light  yellowish  color. 
Fuming  HN03  dissolves,  forming  a 
dark,  reddish-brown  color  ;  on  adding 
H20,  a  yellowish,  resinous-looking 
body  separates. 
The  same. 
H2S04  dissolves  instantly,  forming  a 
yellow  color,  which  becomes  dark 
brown  on  standing. 
Boiled  with  water  dissolves  entirely, 
precipitates  again  on  cooling  ;  when 
heated  with  Fe2Cl6,  dirty  green  color 
and  dirty  green  precipitate  are  formed. 
The  dried  powder,  placed  in  Fe2Cl6 
solution,  becomes  greenish  brown,  be- 
coming greener  on  standing. 
Solution  in  alcohol  dries  mostly  as 
an  amorphous  varnish  or  dull  powder, 
not  crystalline,  as  seen  under  the  mi- 
croscope. 
As  ellagic  acid  has  as  yet  only  been  detected  in  substances  which 
give  pyrogallol  on  decomposition,  the  substances  (tannates)  obtained 
by  precipitating  the  aqueous  solution  of  Eucalyptus  hemiphloia  kino 
(from  which  the  bodies  soluble  in  ether  had  been  removed)  with 
neutral  acetate  of  lead,  and  also  that  obtained  by  adding  basic  ace- 
tate of  lead  to  the  filtrate  from  the  first  precipitate,  were  taken.  The 
lead  from  these  precipitates  was  removed  by  sulphuretted  hydrogen 
and  the  filtrates  evaporated  to  dryness. 
By  heating  these  two  tannins  in  glycerin  for  half  an  hour,  at  200° 
C,  the  decomposition  product  was  in  both  cases  catechol,  and  not 
