rl ^^ 



THE CELL AND PROTOPLASM 



Publication of the American Association 



for the Advancement of Science 



No. 14 



Publication Committee 



C. V. Taylor, Chairman 



Alva R. Davis 



J. Murray Luck 



C. B. VAN NiEL 



Albert Tyler 



Edited by 

 Forest Ray Moulton 



Published for the American Association for the Advancement of Science 

 Smithsonian Institution Building, "Washington, D. C, by 



The Science Press 



1940 



