SMITHSONIAN  MISCELLANEOUS  COLLECTIONS 
VOLUME  96,  NUMBER  3 
PHOTOTROPIC  RESPONSE  AND  CO, 
ASSIMILATION  OF  PLANTS  IN 
POLARIZED  LIGHT 
BY 
EARL  S.  JOHNSTON 
Division  of  Radiation  and  Organisms,  Smithsonian  Institution 
(Publication  3440) 
CITY  OF  WASHINGTON 
PUBLISHED  BY  THE  SMITHSONIAN  INSTITUTION 
JULY   12,  1937 
