EDITORIAL COMMITTEE OF THE 



UNITED STATES DEPARTMENT OF AGRICULTURE AND 



THE ASSOCIATION OF AMERICAN AGRICULTURAL 



COLLEGES AND EXPERIMENT STATIONS 



FOR THE DEPARTMENT 

 KARL F. KELLERMAN, Chairman 



Physiologist and A ssociale Chief, Bureau 

 of PCoHl Industry 



EDWIN W. A.LLBN 



Chief, 0£ice of Experiment Stations 



CHARLES L. ALA.RLATT 



Entomologist and Assistant Chief, Bureau 

 ofEniomotogy 



FOR THE ASSOCIATIOH 

 H. P. ARMSBY 



Director, Institute of Animal Sutrition, The 

 Pennsylvania State CoUege 



j. G. UP^LJLN 



Director. New Jersey A gricuUural E%p*rims>tt 

 Station, Rutoers CoUege 



W. A. RILEY 



Entomologist and Citief, Diyidon^ of Ento- 

 mology ftnd Economic Zoology, AgriaU- 

 turat Ezperimenl Station of the Uhrvertity 

 of Minnesota 



All correspondence regarding articles from tJie Department of Agriculttire shotdd be 

 addressed to Karl F. Kellerman, Journal of Agricultitral Research, Washington, D. C. 



All correspondence regarding articles from State Experiment Stations should be 

 addressed to H. P. Armsby, Institute of Animal Nutrition, State College, Pa. 



