ORGANIZATION OF THE 
UNITED STATES DEPARTMENT OF AGRICULTURE 
September 6, 1928 
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 C. W. Warburton. 
Director of Personnel and Business Adminis- 
tration W. W. Stockberger. 
Director of Information Nelson Antrim Crawford. 
Solicitor R. W. Williams. 
Weather Bureau Charles F. Marvin, Chief. 
Bureau of Animal Industry John R. Mohler, Chief. 
Bureau of Dairy Industry O. E. Reed. Acting Chief. 
Bureau of Plant Industry William A. Taylor, Chief. 
Forest Service R. Y. Stuart, Chief. 
Bureau of Chemistry and Soils H. G. Knight. Chief. 
Bureau of Entomology C L. Marlatt. Chief. 
Bureau of Biological Survey Paul G. Redington. Chief. 
Bureau of Public Roads Thomas H. MacDonald, Chief. 
Bureau of Agricultural Economics Nils A. Olsen, Chief. 
Bureau of Home Economics Louise Stanley. Chief. 
Plant Quarantine and Control Administration' C. L. Marlatt, Chief. 
Grain Futures Administration J. W. T. Duvel, Chief. 
Food, Drug, and Insecticide Administration-^. Walter G. Campbell, Director of 
Regulator!/ Work, in Charge. 
Office of Experiment Stations E. W. Allen, Chief. 
Office of Cooperative Extension Work, C. B. Smith. Chief. 
Library Claribel R. Barnett, Librarian. 
This bulletin is a contribution from 
Bureau of Public Roads Thomas H. MacDonald, Chief. 
additional copies 
OP THIS PUBLICATION MAY BE PROCURED FROM 
THE SUPERINTENDENT OF DOCUMENTS 
U.S. GOVERNMENT PRINTING OFFICE 
WASHINGTON, D. C. 
AT 
30 GENTS PER COPY 
V 
132 
' 
