ORGANIZATION OF THE UNITED STATES DEPARTMENT OF 
AGRICULTURE. 
Secretary of Agriculture Henry C. Wallace. 
Assistant Secretary C. W. Pugsley. 
Director of Scientific Work E. D. Ball. 
Director of Regulatory Work 
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 Walter G. Campbell, Acting 
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, Chief. 
Fixed Nitrogen Research Laboratory F. G. Cottrell, Director. 
Division of Accounts and Disbursements A. Zappone, Chief 
Division of Publications John L. Cobbs, Jr., Chief 
Library Claribel R. Barnett, Librarian. 
States Relations Service A. C. True, Director. 
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 Future Trading Act Administration J the Secretary. 
Office of the Solicitor R. W. Williams, Solicitor. 
This bulletin is a contribution from — 
Bureau of Agricultural Economics, Henry C. Taylor, Chief 
Division of Cotton Wm. R. Meadows, in Charge. 
19 
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PURCHASER AGREES NOT TO RESELL OR DISTRIBUTE THIS 
COPY FOR PROFIT.— PUB. RES. 57, APPROVED MAY 11, 1922 
