ORGANIZATION OF THE 
UNITED STATES DEPARTMENT OF AGRICULTURE 
May 17, 1927 
Secretary of Agriculture W. M. Jardine. 
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 Adminis- 
tration W. W. Stockberger. 
Solicitor R. W.Williams. 
Weather Bureau Charles F. Marvin, Chief. 
Bureau of Agricultural Economics Lloyd S. Tenny, 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 Paul G. Redington, 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. Marlatt, Chairman. 
Insecticide and Fungicide Board J. K. Haywood, Chairman. 
Packers and Stockyards Administration John T. Caine III, Chief. 
Grain Futures Administration !__ J. W. T. Duvel, Chief. 
This bulletin is a contribution from 
Bureau of Plant Industry William A. Taylor, Chief. 
Office of Crop Physiology and Breeding- Walter T. Swingle, Senior 
Physiologist, in Charge. 
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