W:v^'XliM^^S&^:M!iSMM 



EDITORIAL COMMITTEE OF THE 



UNITED STATES DEPARTMENT OF^GRICULTURE AND 



THE ASSOCIATION OF AMERICAN AGRICULTURAL 



COLLEGES AND EXPERIMENT STATIONS 



FOR THE DEPARTMENT 



KARL F. KELLERMAN, Chairman 



Physiologist and Associate Chitf, Bureau 

 of Plant Industry 



EDWIN W. ALLEN 



Chief, OMce of Experiment Stations 



CHARLES L. MARLATT 



Entomologist and Assistant Chief, Bureau 

 oj Entomology 



FOR THE ASSOClATIOIf 

 J. G. LIPMAN 



Director, New Jersey A grictdtural EiperitMut 

 Station, Rutgers College 



W. A. RILEY 



Enlotrtologist and Chief, Division of Ento- 

 mology and Economic Zoology, Agricul- 

 tural Experiment Station of the UniversUf 

 of Minnesota 



H. P. ARMSBY 



Director, Institute of Animal Nutrition, The 

 Pennsylvania State College 



All correspondence regarding articles from the Department of Agriculture should be 

 addressed to Karl F. Kellerman, Journal of Agricultiu-al Research, Washington, D. C. 



All correspondence regarding articles from State Experiment Stations should be 

 addressed to J. G. Lipman, New Jersey Agricultural Experiment Station, New 

 Brunswick, N. J. 



