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PUBLISHED BY AUTHORITY OF THE SECRETARY 

 OF AGRICUETURE, WITH THE COOPERATION 

 OF THE ASSOCIATION OF AMERICAN AGRICUE- 

 TURAE COEEEGES AND EXPERIMENT STATIONS 



EDITORIAL COMMITTEE 



FOR THE DEPAKTMENT 



FOR THE ASSOCIATION 



KARL F. KELIvERMAN, Chairman RAYMOND PEARL 



Physiologist and Assistant Chief, Bureau 

 of Plant Industry 



EDWIN W. ALLEN 



Chief, Office of Experiment Siaiions 



CHARLES L. MARLATT 

 Assistant Chief, Bureau of Entomolozv 



Biologist, Maine Agricultural Experiment 

 Station 



H. P. ARMSBY 



DirectOtT, Institute of Ani^nal Nutrition, The 

 Pennsylvania State College 



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, Orouo, Maine. 



