EDITORIAL COMMITTEE OF THE 



UNITED STATES DEPARTMENT OF AGRICULTURE AND 



THE ASSOCIATION OF AMERICAN AGRICULTURAL 



COLLEGES AND EXPERIMENT STATIONS 



FOR THB DBPARTMEHT 



E:ARIv F. KELLERMAN, chairman 



Physiolotist and Assistant Chief, Bureau 

 of Plant, Industry 



EDWIN W. ALLEN 



Chief, Office of Experiment Stations 



CHARLES L. MARLATT 



Enfomoloffist and A ssistant Chief, Bureau 



of EnUmiology 



FOR THE ASSOCIATION 



RAYMOND PEARL* 



Biologist, Maine AgriculiurtU Experiment 

 Station 



H. P. ARMSBY 



Director, Institute of Animal 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, Jouxnal of Agricultural Researcli, 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, 

 The Pennsylvania State College, State College* Pa. 



