ORGANIZATION OF THE 
UNITED STATES DEPARTMENT OF AGRICULTURE. 
November 1, 1923. 
Secretary of Agriculture Henry G. 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. Wabbtjbton. 
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 Loutse 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 Stockyai'ds Administration 1 Chester Morrill. Assistant i<> 
Grain Future Trading Act Administration J the Secret<iry. 
Office of the Solicitor R. W. Williams. Solicitor. 
This bulletin is a contribution from — 
Bureau of Plant Industry William A. Taylor, Chief. 
Cotton. Truck, and Forage Crop Disease W. A. Orton. Pathologist in 
Investigations. Charge. 
10 
ADDITIONAL COPIES 
<>f this publication mat bi procured ibom 
THE BUFERINT1 si'iNT OF DOCUMENTS 
GOVERNMENT PRINTING Oltl 
WASHINGTON, I>. C, 
AT 
\ts pek copy 
