ON  THE  KINO  OF  EUCALYPTUS  RESINIFERA. 
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pieces  of  a  very  loose  textured  brown  bark  to  which  the  kino 
was  adherent,  as  though,  in  removing  it  from  the  tree  on  which 
'the  juice  had  hardened,  the  bark  adhered  to  it.  Much  of  the 
kino  was  broken  up  into  grains  and  small  particles  of  the  bark 
interspersed.  The  fragments  when  held  to  a  strong  light  are 
translucent  and  of  a  garnet  color,  their  taste  is  astringent  and 
bitterish  with  a  slightly  sweetish  fore  taste.  It  has  no  odor. 
The  grains  are  very  friable  and  easily  reduced  to  powder  of  a 
light  mahogany  color.  The  action  of  water  on  the  powder  is 
peculiar  ;  the  greater  part  of  it  coalesces  by  contact  with  that 
fluid  into  a  soft  mass  of  putty-like  consistence  ;  by  continued 
malaxation  with  water  it  yields  67  per  cent  of  its  weight  to  that 
fluid,  and  probably  more  of  it  would  have  dissolved  by  continu- 
ing the  process.  The  undissolved  residue  consisted  chiefly  of 
apotheme,  soluble  in  alcohol  and  alkaline  liquids  and  resulted 
probably  from  the  action  of  the  air. 
The  slowness  of  action  of  water  upon  this  kino  will  probably 
account  for  some  of  the  discrepancies  which  exist  in  the  results 
of  other  investigators,  who  have  stated  its  solubility  in  water 
as  varying  from  17  per  cent,  to  entire  solubility  except  impu- 
rities. 
This  kino  dissolves  entirely  in  alcohol  sp.  gr.  835  with  the 
exception  of  impurities.  On  diluting  the  tincture  with  water  no 
change  in  its  transparence  occurs  at  first,  but  on  standing,  a 
slight  flocculent  precipitate  occurs.  This  result  would  seem  to 
indicate  that  nearly  the  whole  of  the  kino  might  be  dissolved  by 
water  if  time  enough  was  given. 
The  following  chemical  reactions  were  obtained  with  the 
aqueous  solution.  Lime  water  caused  a  fawn  colored  precipitate. 
Sesquichloride  of  iron  a  greenish  black  precipitate,  which  sepa- 
rates and  leaves  a  clear  greenish  liquid;  gelatin  causes  an  abundant 
flocculent  precipitate  ;  sulphate  of  copper  produces  a  light  gray 
deposit;  corrosive  sublimate  a  cloudiness,  tartar  emetic  a  fawn 
colored  precipitate  depositing  slowly  from  the  water. 
The  Juice  of  Eucalyptus  resinifera  was  in  a  twelve  ounce  bot- 
tle tightly  corked  and  sealed.  It  was  perfectly  transparent,  of 
a  deep  red  brown  or  dark  wine  color,  and  adherent  to  the 
bottom  was  a  small  portion  of  transparent  solid  matter,  evident- 
ly deposited  from  the  juice.    On  opening  the  bottle,  the  liquid 
