﻿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 Work . 



Weather Bureau . Charles F. Marvin, Chief. 



Bureau of Agricultural Economics Henry C. Taylor, Chief. 



Bureau of Animal Industry , John R. 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 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 John L. Cobbs, Jr., 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— JChester Morrill, Assistant to the 



Grain Future Trading Act Administration! Secretary. 



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



This bulletin is a contribution from — 



Bureau of Biological Survey E. W. Nelson, Chief. 



Division of Biological Investigations E. A. Goldman, in Charge. 



16 



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 COPY FOR PROFIT.— PUB. RES. 57, APPROVED MAY 1], 1922 



