﻿ORGANIZATION OF THE UNITED STATES DEPARTMENT OF 

 AGRICULTURE. 



Secretary of Agriculture Henby C. Wallace. 



Assistant Secretary C. W. I'ugsley. 



Director of scientific Work E. D. Ball. 



Director of Regulatory Work 



Weather Bureau Charles F. Marvin, Chief. 



Jinn an of Agricultural Economics Henry C. Taylor, Chief. 



Bureau of Animal Industry John It. Mohler, 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 Surrey B. 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 John L. Cobbs, Jr., Chief. 



Library Claribel R. Barxett, Librarian. 



States Relations Service A. C True, Director. 



Federal Horticultural Board C. L. Marlatt, Chairman. 



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



Padcers and Stockyards Ad Iministrai ion _.-iChester Morrill, 



drain Future-Trading Act Administration / Assistant to the Secretary. 



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



This bulletin is a contribution from — 



Bureau of Plant Industry William A. Taylor, Chief; 



Office of Cereal Investiyatio7is Carleton R. Ball, 



Cercalist in Charge. 



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