EDITORIAL COMMITTEE OF THE 



UNITED STATES DEPARTMENT OF AGRICULTURE AND 



THE ASSOCIATION OF LAND-GRANT COLLEGES 



FOR THE DEPARTMENT 



KARL F. KELLERMAN, Chairman 



Physiologist and Associate Chief, Bureau 

 of Plant Industry 



EDWIN W. ALLEN 



Chief, Office of Experiment Stations 



CHi^LES L. MARLATT 



Entomologist and Assistant Chiey, Bureau 

 of Entomology 



FOR THE ASSOCIATION 



J. G. LIPMAN 



Dean, State College of Agriculture, and 

 Director, New Jersey Agricultural Experi- 

 ment Station, Rutgers College 



W. A. RILEY 



Entomologist and Chief, Division of Ento- 

 mology and Economic Zoology, Agricul- 

 tural Experiment Station of the University 

 of Minnesota 



R. L. WATTS, 



Dean, School of Agriculture, and Director, 

 Agricultural Experiment Station, The 

 Pennsylvania Slate College 



All correspondence regarding articles from the Department of Agriculture should be 

 addressed to Karl F. Kellerman, Joxunal of Agricultural 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. 



