﻿ORGANIZATION OF THE UNITED STATES DEPARTMENT OF AGRI- 

 CULTURE. 



Secretary of Agriculture Henry C. W'a r. la < v, . 



Assistant Secretary C. W. Pugsley. 



Director of Scientific Work E. D. Ball. 



Director of Regulatory Work 



Weather Bureau Charles V . 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. 0. 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 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 ) Chester Morrill. Assistant to the 



Grain Future Trading Act Administration J Secretary. 



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



This bulletin is a contribution from 



Bureau of Agricultural Economics Henry C. Taylor, Chief. 



Division of Cotton Marketing William R. Meadows. Cotton 



Technologist, in charge. 



7 



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PURCHASER AGREES NOT TO RESELL OR DISTRIBUTE THIS 

 COPY FOR PROFIT. — PUB. RES. 57, APPROVED MAY 11, 1922 



