

^ Symposium ofi^ 



THE STRUCTURE OF 

 PROTOPLASM 



A MONOGRAPH OF THE 

 AMERICAN SOCIETY OF 

 PLANT PHYSIOLOGISTS 



Edited By 

 WILLIAM SEIFRIZ 



<i6\c^-x 



PUBLISHED, 1942 



THE IOWA STATE 



AT AMES, IOWA 



COLLEGE PRESS 



