ORGANIZATION OF THE UNITED STATES DEPARTMENT OF AGRICULTURE 

 WHEN THIS PUBLICATION WAS LAST PRINTED 



Secretary of Agriculture Henry A. Wallace. 



Under Secretary Rexford G. Tugwell. 



Assistant Secretary M. L. Wilson. 



Director of Extension Work C. W. Warburton. 



Director of Finance W. A. Jump. 



Director of Information M. S. Eisenhower. 



Director of Personnel W. W. Stockberger. 



Director of Research James T. Jardine. 



Solicitor '___ Mastin G. White. 



Agricultural Adjustment Administration H. R. Tolley, 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 '. Ira N. Gabrielson, Chief. 



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



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



Bureau of Entomology 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. 



Soil Conservation Service H. H. Bennett, 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 Bee Culture J. I. Hambleton, Principal Avi- 



culturist, in charge. 



' 35 



U. S. GOVERNMENT PRINTING OFFICE: 1936 



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



