﻿ORGANIZATION OF THE 

 UNITED STATES DEPARTMENT OF AGRICULTURE. 



Secretary of Agriculture Henry C. Wallace. 



Assistant Secretary C. W. Pugsley. 



Director of Scientific Work E. D. Ball. 



Director of Regulatory WorSc 



Weather Bureau Chaeles F. Marvin, Chief. 



Bureau of Agricultural Economics Henhy C. Tayi.ok. Chief. 



Bureau of Animal Industry John R. Mohlek, Chief. 



Bureau of Plant Industry William A. Taylor, Chief. 



Forest Service W. B. Greeley, Chief. 



Bureau of Chemistry Walter G. Campbell, Acting 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. 



Fixed Nitrogen Research Laboratory F. G. Cottrell, Director. 



Division of Accounts and Disbursements A. Zappone, Chief. 



Division of Publications Elwin L. Powell, Acting Chief. 



Library Claribel R. Barnett, Librarian. 



States Relations Service A. C. True, Director. 



Federal Horticultural Board C. L. Marlatt, Chairman. 



Insecticide and Fungicide Board J. K. Haywood, Chairman. 



Packers and Stockyards Administration ] Chester Morrill, Assistant to the 



drain Future Trading Act Administration) Secretary. 



Office of the Solicitor R. W. Williams, Solicitor. 



This bulletin is a contribution from the — 



Bureau of Plant Industry William A. Taylor, Chief. 



Office of Horticultural and Pomologi- 



eal Investigations L. C. Corbett, Horticulturist in 



Charge. 

 64 



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GOVERNMENT PRINTING OFFICE 



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PURCHASE!: AGR] ES NOT TO RESELL OR DISTRIBUTE THIS 

 COPY FOR PROFIT.— PUB. RES. 67, APPROVED MAY 11, 1922 





