ORGANIZATION OF THE 
UNITED STATES DEPARTMENT OF AGRICULTURE 
April 25, 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 Admin- 
istration - 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 E. W. Nelson, Chief. 
Bureau of Public Roads Thomas H. MacDonald, Chief. 
B ureau of Home Economics Louise Stanley, Chief. 
Bureau of Dairy Industry C. W. Larson, Chief. 
Fixed Nitrogen Research Laboratory F. G. Cottrel, 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. Dtjvel, in Charge. 
This bulletin is a contribution from 
Forest Service W. B. Greeley, Chief. 
Branch of Research : Earle H. Clapp, Assistant , For- 
ester, in Charge. 
Forest Products Laboratory Carlile P. Winslow, Director. 
Section of Pulp and Paper J. D. Rue, in Charge. 
ADDITIONAL copies 
OF THIS PI'BLICATION MAY BE PROCURED FROM 
THE SUPERINTENDENT OF DOCUMENTS 
GOVERNMENT PRINTING OFFICE 
WASHINGTON, D. C. 
AT 
20 CENTS PER COPY 
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