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 Willla.m 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 E.G. Cottrell, Director. 



Division of Accounts and Disbursements A. Zappone , Chief. 



Division of Publications Edwin C. 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 1 Chester Morrill, Assistant to 



Grain Futures Trading Act Administration J the Secretary. 



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



This bulletin is a contribution from 



Bureau of Animal Industry John R. Mohler, Chief. 



Dairy Division C. W. Larson, Chief 



46 



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PURCHASER AGREES NOT TO RESELL OR DISTRIBUTE THIS 

 COPT FOR PROFIT.— PUB. RES. 57, APPROVED MAT 11, 1922 



