214  Mynca  Asplenifolia.  {AmMay'i8P95arm- 
extract  of  a  dark  green  and  shining  appearance.  Both  extracts 
were  largely  resinous. 
They  were  treated  with  hot  water  and  the  latter  was  filtered  off 
while  still  warm. 
Neither  potassium  cyanide  nor  ferric  chloride  gave  indications 
of  gallic  acid  in  the  cold  water-soluble  part  of  the  extract  of  the 
rhizome.  The  former  but  not  the  latter  reagent  showed  evidence 
of  its  presence  at  the  same  stage  in  the  treatment  of  the  leaves. 
Glucose  was  not  contained  in  the  water  solution  and  glucosides  were 
absent  as  was  proven  by  boiling  part  of  the  solution  with  one  per 
cent,  sulphuric  acid  and  making  alkaline,  Fehling's  solution  not 
being  reduced. 
That  part  of  both  extracts  not  soluble  in  water  was  treated  with 
one  per  cent,  sulphuric  acid.  This  was  filtered  off,  and  the  filtrates 
shaken  successively  with  petroleum  ether,  ether  and  chloroform. 
No  residues  were  obtained  when  the  solvents  were  spontaneously 
operated,  nor  was  anything  removed  from  the  filtrates  after  making 
them. alkaline  with  ammonium  hydrate  and  repeating  the  agitations 
with  the  above  liquids  in  the  same  crder.  The  resinous  residues 
(and  chlorophyll,  in  case  of  leaves),  which  were  left  after  treating 
the  extracts  with  water  and  one  per  cent,  sulphuric  acid,  were  sol- 
uble in  absolute  alcohol,  from  which  they  were  partly  precipitated 
upon  the  addition  of  water.  This  precipitated  matter  from  the 
leaves  was  completely  soluble  in  alkaline  hydrates,  producing  solu- 
tions which  were  precipitated  by  dilute  acids  ;  while  that  from  the 
rhizome  was  not  altogether  dissolved  by  the  same  solvents.  Heat 
caused  the  undissolved  part  to  settle  in  the  form  of  a  white  flocculent 
precipitate,  which  is  subsequently  more  fully  noted. 
Absolute  alcohol,  which  was  the  next  solvent  applied,  extracted 
from  the  rhizome  8  46  per  cent,  of  porous,  red-brown,  substance  and 
from  the  leaves  10  81  per  cent,  of  black,  brittle  and  bitter  extract. 
Both  extracts  were  astringent*  the  first  was  soluble  in  water,  with 
the  exception  of  some  dirty,  reddish  residue  consisting  mainly  of 
resin,  similar  to  that  found  in  the  ether  extract.  Water  dissolved 
the  greater  portion  of  the  extract  of  the  leaves,  but  left  undissolved 
a  soft  black  mass  composed  of  chlorophyll  and  resin  which  in  this 
case,  also,  resembled  that  found  in  the  ethereal  extract.  The  water- 
soluble  part  of  the  extract  of  the  rhizome  contained  5  44  per  cent, 
of  tannin  and  -53  per  cent,  of  glucose;  while  that  of  the  leaves 
