ORGANIZATION OF THE 
UNITED STATES DEPARTMENT OF AGRICULTURE 
March, 1924 
Secretary of Agriculture Henry C. Wallaci:. 
Assistant Secretary Howabd M. Goee. 
Director of Scientific Work E. D. Ball. 
Director of Regulatory Worlc 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 Futures Administration f Secretary. 
This bulletin is a contribution from — 
Bureau of Plant Industry William A. Taylor, Chief. 
Office of Horticultural Investigations L. C. Cobbett, Horticulturist in 
Charge. 
32 
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