Am.  Jour.  Pharm. 
Jan.,  1893. 
Angophona  Kino. 
3'i 
(4)  From  Eastwood,  near  Sydney,  collected  in  April  from  trees, 
height  80  feet,  diam.  2  feet. 
This  sample  much  resembles  No.  2.  It  is,  however,  decidedly 
darker  in  bulk,  even  inclining  to  liver-color,  and  is  sowewhat  opaque. 
It  readily  crushes  between  the  fingers  to  a  burnt  sienna  powder, 
slightly  darker  than  the  standard  tint.  It  is  evidently  the  oldest  of 
the  A.  intermedia  samples.  To  water  it  yields  a  rich  orange-brown 
liquid  when  filtered.  With  alcohol  the  filtrate  is  of  a  dark  orange- 
brown. 
Angophora  lanceolata,  Cav.,  "  Red  Gum,"  "  Orange  Gum,"  "  Rusty 
Gum." 
In  collecting  kino  from  this  tree  it  may  be  well  to  remind  people 
that  the  smooth  trunk  might  be  mistaken  by  a  careless  observer  for 
that  of  Eucalyptus  maculata,  but  the  two  kinos  cannot  be  confused 
even  by  a  tyro.  I  submit  notes  on  two  kinos  of  this  species.  This 
kino  is  abundant,  and  readily  gathered  on  account  of  the  smooth- 
ness of  the  bark.  The  tree  obtains  its  vernacular  names  owing  to 
the  kino  stains  on  the  pale  colored  stem. 
(1)  From  Botany,  near  Sydney,  collected  in  March,  trees  50  feet 
high,  and  1-2  feet  in  diameter.  When  freshly  gathered  this  kino 
has  a  smell  somewhat  like  sour  wine,  something  resembling  that  of 
E.  maculata  but  not  so  agreeable.  As  far  as  my  experience  goes  it 
is  quite  charcteristic.  The  two  kinos  possess  other  characteristics 
in  common,  one  of  which  is  the  following :  If  they  be  digested  in 
water,  and  the  turbid  liquor  be  treated  with  ether,  two  ethereal 
layers  are  formed,  containing  catechin  in  solution.  This  substance 
may  readily  be  obtained  by  evaporation  of  the  ether,  and  it  possesses 
the  characteristic  odor  of  the  kino  from  which  it  was  obtained,  the 
residue,  insoluble  in  ether,  being  quite  destitute  of  odor.  The  odor- 
iferous principle  (a  volatile  substance  allied  to  cinnamene  or  styrol) 
is,  however,  so  small  that  an  hour's  exposure  of  the  ethereal  extract 
to  the  atmosphere  removes  every  trace  of  it. 
The  present  sample  had  freshly  exuded,  is  exceedingly  brittle,  has 
a  bright  fracture,  ruby  with  a  tinge  of  brown  ;  color  of  powder 
orange-brown.  So  brittle  is  it  that  the  lumps  and  vessels  containing 
it  become  readily  coated  with  fine  powder. 
In  cold  water  it  dissolves  slowly,  forming  a  liquid  of  the  color  of 
brown  sherry  if  left  undisturbed.  With  alcohol  it  yields  a  pale 
orange-brown  solution  with  a  slightly  muddy  residue. 
