EDITORIAL COMMITTEE OF THE 



UNITED STATES DEPARTMENT QF AGRICULTURE AND 



THE ASSOCIATION OF AMERICAN AGRICULTURAL 



COLLEGES AND EXPERIMENT STATIONS 



FOR THE DEPARTMENT 



KARL F. KELLERMAN, Chairman 



Physiologist and Associate Chief, Bureau 

 of Plant Industry 



EDWIN W. ALLEN 



Chief, Office of Experiment Siatiorts 



CHARLES L. MARLATT 



Entomologist and Assistant Chief, Bureau 

 of Entomology 



FOR THE ASSOCIATION 



RAYMOND PEARL* 



Biologist, Maine Agricultural Experitneni 

 Station 



H. P. ARMSBY 



Director, Institute of Animal Nulrition, The 

 Pennsylvania State College 



E. M. FREEMAN 



Botanist, Plant Pallwlogist and Assistant 

 Dean, Agricultural Experiment Station of 

 the Universily of Minnesota 



All correspondence regarding articles from the Department of Agriculture should be 

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



*Dr. Pearl has imdertaken 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. Annsby, institute of Animal Nutrition, 

 State College, Pa. 



