SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 92, NUMBER 3 



Hrtbuc J^unb 



LETHAL RESPONSE OF THE ALGA 



CHLORELLA VULGARIS TO 



ULTRAVIOLET RAYS 



(With Three Plates) 



BY 



FLORENCE E. MEIER 

 Division of Radiation and Organisms, Smithsonian Institution 



(Publication 3254) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



AUGUST 6, 193 + 



