PUBLISHED BY AUTHORITY OF THE SECRETARY 

 OF AGRICULTURE, WITH THE COOPERATION 

 OF THE ASSOCIATION OF AMERICAN AGRICUL- 

 TURAL COLLEGES AND EXPERIMENT STATIONS 



EDITORIAL COMMITTEE 



FOR THE DEPARTMENT 



FOR THE ASSOCIATION 



KARL F. KELLERMAN, Chairman RAYMOND PEARL 



Physiologist and Assistant Chief, Bureau 

 of Plant Industry 



EDWIN W. ALLEN 



Chief, Office of Experiment Stations 



CHARLES L. MARLATT 



Assistant Chief, Bureau of Entomology 



Biologist, Maine Agricultural Experiment 

 Station 



H. P. ARMSBY 



Director, Institute, of Ar,:»ial Nutrition, The 

 Pennsylvania State Col: 



E. M. FREEMAN 



Botanist, Plant Pathologist, and Assistant 

 Dean, Agricultural Experiment Station, of 

 the University 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. 



All correspondence regarding articles from Experiment Stations should be 

 addressed to Raymond Pearl, Journal of Agricultural Research, Orono, Maine. 



