SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 92. NUMBER 6 



Ertbiir jfunb 



EFFECTS OF INTENSITIES AND WAVE 



LENGTHS OF LIGHT ON UNICELLULAR 



GREEN ALGAE 



(With Three Plates) 



BY 



FLORENCE E. MEIER 

 Division of Radiation and Organisms, Smithsonian Institution 





(Publication 3257) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



OCTOBER 11, 19 34 



