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 Adminis- W. W. Stockberger. 

 tration. 



Director of Information M. S. Eisenhower! 



Solicitor Seth Thomas. 



Bureau of Agricultural Economics Nils A. Olsen, Chief. 



Bureau of Agricultural Engineering „ . — S. II. 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. 



Chas. J. Brand, Coadministrator. 



This circular is a contribution from 



Bureau of Plant Industry William A. Taylor, Chief. 



Division of Fruit and Vegetable Crops E. C. Auchter, Principal Horti- 



and Diseases. culturist, in Charge. 

 40 



U.S. GOVERNMENT PRINTING OFFICE: 1933 



