ORGANIZATION OF THE 
UNITED STATES DEPARTMENT OF AGRICULTURE 
October 30. 1925 
Secretary of A griculture W. M. Jardine . 
Assistant Secretary R. W. Duxlap. 
Director of Scientific Work 
Director of Regulatory Work Walter G. Campbell. 
Director of Extension Work C. W. Warbtjrtox. 
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 , Chief. 
Bureau of Animal Industry Johx 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. 
B ureau of Dairying 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. Barxett, Librarian. 
Federal Horticultural Board C. L. Marlatt, Chairman. 
Insecticide and Fungicide Board J. K. Haywood, Chairman. 
Packers and Stockyards Administration Johx T, Caixe, in Charge. 
Grain Futures Administration J. W. T. Dtjvel, in Charge. 
This bulletin is a contribution from 
Bureau of Public Roads Thomas MacDonald, Chief. 
Division of Agricultural Engineering S. H. McCrory, Chief. 
56 
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