ORGANIZATION OF THE UNITED STATES DEPARTMENT OF AGRICULTURE 

 WHEN THIS PUBLICATION WAS LAST PRINTED 



Secretary of Agriculture Henry A. Wallace. 



Under Secretary Rexford G. Ttjgwell. 



Assistant Secretary M. L. Wilson. 



Director of Extension Work C. W. Warburton. 



Director of Personnel W. W T . Stockberger. 



Director of Information M. S. Eisenhower. 



Director of Finance W. A. Jump. 



Solicitor Seth Thomas. 



Agricultural Adjustment Administration Chester C. Davis, Administrator. 



Bureau of Agricultural Economics A. G. Black, Chief. 



Bureau of Agricultural Engineering S. H. McCrory, Chief. 



Bureau of Animal Industry John R. Mohler, Chief. 



Bureau of Biological Survey J. N. Darling, Chief. 



Bureau of Chemistry and Soils H. G. Knight, Chief. 



Bureau of Dairy Industry O. E. Reed, Chief. 



Bureau of Entomolgy and Plant Quarantine. Lee A. Strong, Chief. 



Office of Experiment Stations James T. Jardine, Chief. 



Food and Drug Administration Walter G. Campbell, Chief. 



Forest Service _____„-=_ Ferdinand A. Silcox, Chief. 



Grain Futures Administration J. W. T. Duvel, Chief. 



Bureau of Home Economics Louise Stanley, Chief. 



Library Claribel R. Barnett, Librarian. 



Bureau of Plant Industry Frederick D. Richey, Chief. 



Bureau of Public Roads Thomas H. MacDonald, Chief. 



Weather Bureau. Willis R. Gregg, Chief. 



This circular is a contribution from 



Bureau of Entomology and Plant Quarantine Lee A. Strong, Chief. 



Division of Truck Crop and Garden Insects.. W. H. White, Principal Ento- 

 mologist in Charge. 



14 



U. S. GOVERNMENT PRINTING OFFICE: 1335 



For sale by the Superintendent of Documents, Washington, D. C. ----- - Price 5 cents 



