SMITHSONIAN   MISCELLANEOUS  COLLECTIONS 
VOL.   96,    NO.  2,    PL.    1 
C        'lilO 
I  IB 
-Normal 
spectrum 
,  Prismatic 
spectrum 
Comparison  of  Leaf  and  Seed  Pigments 
1.  Spectrogram  of  acetone  extract  of  leaf  pigments. 
(Willstatter   and    Stoll. ) 
2.  Spectrogram  of  acetone  extract  of  seed  pigments. 
3.  Mercury   comparison   spectrogram. 
