SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 92, NUMBER 5 



Hrtbuv jFutib 



COLONIAL FORMATION OF UNICELLULAR 



GREEN ALGAE UNDER VARIOUS 



LIGHT CONDITIONS 



(With Three Plates) 



BY 



FLORENCE E. MEIER 



Division of Radiation and Organisms, Smithsonian Institution 



(Publication 3256) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



OCTOBER 8, 1934 



