EDITORIAL COMMITTEE OF THE 



UNITED STAT]?3 DEPARTMENT OF AGRICULTURE AND 



THE ASSOCIATION OF AMERICA!^ AGRICULTURAL 



COLLEGES AND EXPERIMENT STATIONS 



FOR THE DEPARTMENT 



FOR THE ASSOCIATION 



KARL F. KELLERMAN, Chairman RAYMOND PEARL * 



Physiologist and A ssistanf Chief, Bureau 

 of Plant Industry 



EDWIN W. ALLEN 



Chief, Office of ExperiTnent Slaipyns 



CHARLES L. MARLATT 



Entomologist and Assistant Chief, Bureau 



nf Entomology 



Biologist, Maine Agricultural Experiment 

 Station 



H. P. ARMSBY 



Director, Institute of Animal Nutrition, The 

 Pennsyh'ccnia Siaie College 



E. M. EREEMAN 



Botanist, Plant Pathologist and Assistant 

 Dean, Agricultural Experiment Station of 

 the Unitiersity of Minnesota 



All correspondence regarding articles frotn the Department of Agriculture should be 

 addressed to Karl F. Kellerman, Journal of Agriculttiral Research, Washington, D. C. 



* Dr. Pearl has undertaken special work in connection with the war emergency, 

 therefore, until further notice all correspondence regarding articles from State Experi- 

 ment Stations should be addressed to H. P. Armsby, Institute of Animal Nutrition, 

 State College, Pa. 



