ORGANIZATION OF THE 

 UNITED STATES DEPARTMENT OF AGRICULTURE 



December '2*2, 1925 



Secretary of Agriculture W. M. Jardine. 



Assistant Secretary R. W. Dunlap. 



Director of Scientific Work 



Director of Regulatory Work Walter G. Campbell. 



Director of Extension Work_.^ C. W. Warburton. 



Director of Information Nelson Antrim Crawford. 



Director of Personnel and Business Adminis- 

 tration W. W. Stockberger. 



Solicitor R. W. Williams. 



Weather Bureau Charles F. Marvin. Chief. 



Bureau of Agricultural Economics Thomas P. Cooper, 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 C A. Browne, Chief. 



Bureau of Soils Milton Whitney, Chief. 



Bureau of Entomology L. O. Howard, Chief. 



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



Bureau of Public Roads Thomas H. MacDonald, Chief. 



Bureau of Home Economics Louise Stanley, Chief. 



Bureau of Dairying C. W. Larson, Chief. 



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



Office of Experiment Stations E. W. Allen, Chief. 



Office of Cooperative Extension Work C. B. Smith, Chief. 



Library Claribel R. Barnett, Librarian. 



Federal Horticultural Board C L. Marlatt, Chairman. 



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



Packers and Stockyards Administration John T. Caine, in Charge. 



Grain Futures Administration J. W. T. Duvel, in Charge. 



This bulletin is a contribution from 



Bureau of Plant Industry William A. Taylor, Chief. 



Office of Biophysical Investigations G. N. Collins, Senior Botanist in 



Charge. 



35 



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