ORGANIZATION OF THE 
UNITED STATES DEPARTMENT OF AGRICULTURE, 
October 20, 1923. 
Secretary of Agriculture Henry C. Wallace. 
Assistant Secretary Howard M. Gore. 
D i 'rector of Scientific Work E . D . Ball. 
Director of Regulatory Work Walter G. Campbell. 
Director of Extension Work C. W. Warburton. 
Solicitor R. W. Williams. 
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 C. A. Browne , 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. 
Bureau of Home Economics Louise Stanley, Chief. 
Office of Experiment Stations E. W. Allen, Chief 
Fixed Nitrogen Research Laboratory F. G. Cottrell, Director. 
Publications L. J. Haynes, In Charge. 
Library Claribel R. Barnett. Librarian. 
Federal Horticultural Board C. L. Marlatt, Chairman. 
Insecticide and Fungicide Board J. K. Haywood, Chairman. 
Packers and Stockyards Administration 1 Chester Morrill, Assistant to the 
Grain Futures Administration [ Secretary. 
This bulletin is a contribution from 
Bureau of Entomology L. . Howard, Chief. 
Fruit Insect Investigations A. L. Quaintance , Entomologist in 
Charge. 
30 
ADDITIONAL COPIES 
OF THIS PUBLICATION MAY BE PROCURED FROM 
THE SUPERINTENDENT OF DOCUMENTS 
GOVERNMENT PRINTING OFFICE 
WASHINGTON, D. C. 
AT 
10 CENTS PER COPY 
