ORGANIZATION OF THE UNITED STATES DEPARTMENT 
OF AGRICULTURE. 
October 15, 1923. 
Secretary of Agriculture IIenry 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. 
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 Sendee W. B. Greeley, Chief 
Bureau of Chemistry C. A. Browne, Chief. 
Bureau of Soils Milton Whitney, Chief. 
Bureau of Entomology L. 0. Howard, Chief. 
Bureau of Biological Survey E. W. Nelson, Chief 
Bureau of Public Roads Thomas H. MacDonald, ChieJ. 
Bureau of Home Economics Louise Stanley, Chief 
Fixed Nitrogen Research Laboratory F. G. Cottrell, Director. 
Division of Accounts and Disbursements A. Zappone, Chief. 
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 Trading Act Administration / Secretary. 
Office of the Solicitor R. W. Williams, Solicitor. 
This bulletin is a contribution from 
Bureau of Animal Industry John R. Mohler, Chief. 
Dairy Division C. W. Larson, Chief. 
additional copies 
OF THIS PUBLICATION MAY BE PROCURED FROM 
THE SUPERINTENDENT OF DOCUMENTS 
GOVERNMENT PRINTING OFFICE 
WASHINGTON, D. C. 
AT 
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PURCHASER AGREES NOT TO RESELL OR DISTRIBUTE THIS 
COPY FOR PROFIT.— PUB. RES. 67, APPROVED MAY 11, 1922 
