ORGANIZATION OF THE 
UNITED STATES DEPARTMENT OF AGRICULTURE 
June 14, 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. 
Fixed Nitrogen Research Laboratory F. G. Cottrell, Director. 
Office of Experiment Stations E. W. Allen, Chief. 
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 'I Chester Morrill, Assistant to the 
Grain Futures Administration / Secretary. 
This bulletin is a contribution from 
Bureau of Plant Industry William A. Taylor, Chief. 
Office of Drug, Poisonous, and Oil Plant 
Investigations W. W. Stockberger, in Charge. 
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