ORGANIZATION OF THE 
UNITED STATES DEPARTMENT OF AGRICULTURE 
November 23, 1926 
Secretary of Agriculture : - W. M. Jaedine. 
Assistant Secretary R. W. Dunlap. 
Director of Scientific Work A. F. Woods. 
Director of Regulatory Work Walter G. Campbell. 
Director of Extension Work C. W. Warburton. 
Director of Information Nelson Antrim Crawford. 
Director of Personnel and Business Ad- 
ministration W. W. Stockberger. 
Solicitor R. W. Williams. 
Weather Bureau Charles F.JVIarvin, Chief. 
Bureau of Agricultural Economics Lloyd S. Tenny, Acting 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. 
Bureau of Dairy Industry C. W. Larson, Chief. 
Office of Experiment Stations. E. W. Allen, Chief. 
Office of Cooperative Extension Work C. B. Smith, Chief. 
Library Claribel R. Barnett, Librarian 
Federal Horticultural Board C. L. Mablatt, Chairman, 
Insecticide and Fungicide Board J. K. Haywood, Chairman. 
Packers and Stockyards Administration—. John T. Caine III, in Charge, 
Grain Futures Administration J. W. T. Duvel, in Charge. 
This bulletin is a contribution from 
Bureau of Plant Industry William A. Taylor, Chief. 
Office of Cereal Crops and Diseases Carleton R. Ball, Senior Agrono- 
mist, in Charge. 
46 
ADDITIONAL COPIES 
OF THIS PUBLICATION MAY BE PROCURED FROM 
THE SUPERINTENDENT OF DOCUMENTS 
GOVERNMENT PRINTING OFFICE 
WASHINGTON, D. C. 
AT 
20 CENTS PER COPY 
