SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 98, NUMBER 23 



STIMULATIVE EFFECT OF SHORT WAVE 



LENGTHS OF THE ULTRAVIOLET ON THE 



ALGA STICHOCOCCUS BACILLARIS 



(With Four Plates) 



BY 



FLORENCE E. MEIER 



Division of Radiation and Organisms 



Smithsonian Institution 



(Publication! 3549) 



CITY OF WASHINGTON 

 PUBLISHED BY THE SMITHSONIAN INSTITUTION 



SEPTEMBER 26, 1939 



