ORGANIZATION OF THE UNITED STATES DEPARTMENT OF AGRICULTURE 

 WHEN THIS PUBLICATION WAS LAST PRINTED 



Secretary of Agriculture Henry A. Wallace. 



Assistant Secretary . Rexford G. Tugwell. 



Director of Scientific Work A. F. Woods. 



Director of Extension Work C. W. Warburton. 



Director of Personnel and Business Admin- W. W. Stockberger. 

 istration. 



Director of Information M. S. Eisenhower. 



Solicitor Seth Thomas. 



Bureau of Agricultural Economics Nils A. Olsen, Chief. 



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



Bureau of Animal Industry John R. Mohler, Chief. 



Bureau of Biological Survey Paul G. Redington, Chief. 



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



Office of Cooperative Extension Work C. B. Smith, Chief. 



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



Bureau of Entomology C. L. Marlatt, Chief. 



Office of Experiment Stations James T. Jardine, Chief. 



Food and Drug Administration Walter G. Campbell, Chief. 



Forest Service R. Y. Stuart, 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 William A . Taylor, Chief. 



Bureau of Plant Quarantine Lee A. Strong, Chief. 



Bureau of Public Roads Thomas H. MacDonald, Chief. 



Weather Bureau Charles F. Marvin, Chief. 



Agricultural Adjustment Administration George N. Peek, Administrator. 



Charles. J. Brand, Coadministrator. 



This circular is a contribution from 



Bureau of Entomology C. L. Marlatt, Chief. 



Division of Fruit and Shade Tree Insects.. D. L. Van Dine, Principal Ento- 

 mologist, in Charge. 



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