i8r 
Per  Cent. 
Aprif  w&f1"*}       Analysis  of  Polygala  Senega. 
Per  Cen 
Soluble  in  cold  distilled  water  : 
Glucose  ]  2*68 
Saccharose   5'32 
Mucilage   i'95 
Extractive  (saponin,  etc.)                              .  J   4*07  14*02 
Soluble  in  alkaline  water  (o'i  per  cent.  NaOH): 
Pectin  and  albuminoids  \  18*40 
Extractive  >   2*16  20*56 
Soluble  in  acid  water  (1  per  cent.  HO): 
Pararabin   1  *6o 
No  starch. 
Lignin   n*6o 
Cellulose   19*30 
Moisture     3*25 
Ash   6*65 
Loss   8 '54 
I OO 'CO 
On  exhausting  the  drug  (which  had  previously  been  percolated 
with  acetone  and  freed  from  it)  with  cold  distilled  water,  an  infusion 
of  a  reddish-brown  color  was  obtained,  which  was  very  frothy.  After 
precipitating  with  basic  lead  acetate,  I  found  3-95  per  cent,  of  glucose 
and  6-05  per  cent,  of  saccharose.  An  attempt  was  made  to  secure 
the  saponiod  principle,  with  the  same  result  as  stated  before. 
In  order  to  ascertain  the  character  of  the  mucilage,  pectin,  etc.,  I 
made  the  following  experiments : 
About  100  grammes  of  the.  drug  were  exhausted  with  distilled 
water  at  ordinary  temperature.  The  infusion  was  evaporated  at  low 
temperature  on  a  water  bath  to  about  1 50  c.c.  The  solution  ap- 
peared very  frothy.  From  this  solution  I  precipitated  the  mucilage 
with  five  volumes  of  95  per  cent,  alcohol.  The  mucilage  was 
boiled,  during  two  hours,  with  1  per  cent,  sulphuric  acid.  A  small 
amount  of  substance  had  precipitated  out ;  the  filtered  liquid  readily 
reduced  Fehling's  solution.  It  was  then  carefully  neutralized  by 
sodium  hydrate  solution,  an  excess  of  sodium  acetate  added,  and 
then  some  phenyl-hydrazine-chloride,  and  the  whole  warmed  on  a 
water  bath  during  half  an  hour.  After  standing  twenty-four  hours, 
lemon-yellow  aggregates  of  an  osazone  had  deposited.  These 
were  redissolved  in  cold  95  per  cent,  alcohol.  On  spontaneous 
evaporation,  a  small  quantity  of  microscopic  crystals  had  deposited. 
