ORGANIZATION OF THE 
UNITED STATES DEPARTMENT OF AGRICULTURE. 
October 5, 1923. 
Secretary of Agriculture Henry 0. Wallace. 
Assistant Secretary Howard M. Gore. 
Director of Scientific Wo^k 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 Economic* 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 i__ E. W. Allen, Chief. 
Fixed 'Nitrogen Research Laboratory F. G. Cottrell, Director. 
Division of Accounts and Disbursements A. Zappone, 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 1 Chester Morrill, Assistant to 
Grain Futures Administration I the Secretary. 
This bulletin is a contribution from 
Bureau of Entomology L. O. Howard, Chief. 
Fruit-Insect Investigations A. L. Quaintance, Entomologist 
in Charge. 
Bureau of Plant Industry William A. Taylor, Chief. 
Fruit-Disease Investigations Merton B. Waite, Pathologist 
in Charge. 
6 
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V 
