60 BULLETIN 1155, U. S. DEPARTMENT OF AGRICULTURE. 
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. O. 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 Edwin C . Powell, Acting Chief. 
Library Claribel R . B arnett, 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 the 
Grain Future Trading Act Administration J Secretary. 
Office of the Solicitor R. W. Williams, Solicitor. 
This bulletin is a contributicr irom 
Bureau of Plant Industry William A. Taylor, Chief 
Office of Cereal Investigations Carleton R. Ball, Cerealist in Charge. 
ADDITIONAL copies 
OF THIS PUBLICATION MAY BE PROCURED FROM 
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GOVERNMENT PRINTING OFFICE 
WASHINGTON, D. C. 
AT 
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PURCHASER AGREES NOT TO RESELL OR DISTRIBUTE THIS 
COPY FOR PROFIT.— PUB. RES. 57, APPROVED MAY 11, 1922 
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