ORGANIZATION OF THE 
UNITED STATES DEPARTMENT OF AGRICULTURE. 
February 18, 1924. 
Secretary of Agriculture Henry C. Wallace. 
Assistant Secretary Howard M. Gore. 
Director of Scientific Work E. D. Ball. 
Director of Regulatory Work Walter G. Campbell. 
Director of Extension Work C. W. Warburton. 
Solicitor R. W. Williams. 
Weather Bureau Charles F. Marvin, Chief. 
Bureau of Agricultural Economics Henry C. Taylor, Chief. 
Bureau of Animal Industry John R. Mohler, Chief. 
Bureau of Plant Industry William A. Taylor, Chief. 
Forest Service W. B. Greeley, Chief. 
Bureau of Chemistry C. A. Browne, Chief. 
Bureau of Soils Milton Whitney, Chief. 
Bureau of Entomology L. O. Howard, Chief. 
Bureau of Biological Survey E. W. Nelson, Chief. 
Bureau of Public Roads Thomas H. MacDonald, Chief. 
Bureau of Home Economics Louise Stanley, Chief. 
Office of Experiment Stations E. W. Allen, Chief. 
Fixed Nitrogen Research Laboratory F. G. Cottrell, Director. 
Publications L. J. Haynes, in Charge. 
Library Claribel R. Barnett, Librarian. 
Federal Horticultural Board C. L. Marlatt, Chairman. 
Insecticide and Fungicide Board J. K. Haywood, Chairman. 
Packers and Stockyards Administration 1 Chester Morrill, Assistant to the 
Grain Future Trading Act Administration— | Secretary. 
This bulletin is a contribution from 
Bureau of Entomology L. O. Howard, Entomologist 
and Chief. 
Investigations in Bee Culture < E. F. Phillips, Apiculturist in 
Charge. 
38 
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