ORGANIZATION OF THE 
UNITED STATES DEPARTMENT OF AGRICULTURE 
September 18, 1926 
Secretary of Agriculture W. M. Jardine. 
Assistant Secretary R. W. Dtjnlap. 
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 Adminis- 
tration W. W. Stockberger. 
Solicitor R. W. Williams. 
Weather Bureau Charles F. Marvin, 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. 
Fixed Nitrogen Research Laboratory F. G. Cottrell, Director. 
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. Marlatt, 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 Animal Industry John R. Mohler, Chief. 
Pathological Division John S. Buckley, Chief. 
ADDITIONAL copies 
OF THIS PUBLICATION MAT BE PROCURED FROM 
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GOVERNMENT PRINTING OFFICE 
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