ORGANIZATION OF THE UNITED STATES DEPARTMENT OF AGRICULTURE 
WHEN THIS PUBLICATION WAS LAST PRINTED 
WeCreLanyi Of, AGiMeullLUnen 2-4. Ae eee Henry A. WALLACE. 
OnidersS ccretany=2 2 a eo ae ee M. L. WILson. 
AlsststantiSecnetany oS). oy. TES eo eee Harry L. Brown. 
Coordinator of Land Use Planning and Di- M.S. EISENHOWER. 
rector of Information. 
Director of Extension Work_._.------------ C. W. WARBURTON. 
Directormofic Finances) aa ae Bie es eae ere oe W. A. JUMP. 
Director Ofpieen sonnel = a= aes ee ee ee = Roy F. HENDRICKSON. 
DieclorxOfulceSeOTeh ea steed Get sre eee ok ee JAMES T. JARDINE. 
Solecttonu ite AF) SUC iey Ake Seo ee Mastin G. WHITE. 
Agricultural Adjustment Administration__-_-- H. R. Touitey, Administrator. 
Bureau of Agricultural Economics___---_-~-- A. G. Buack, Chief. 
Bureau of Agricultural Engineering_-------- S. H. McCrory, Chief. 
BUCOuOfeAnemal InauUustiy == see = ye JoHN R. MouteEr, Chief. 
Bureau of Biological Survey__-----------:- Ira N. GaBRIEtson, Chief. 
Buneauon.Chemistryand Souss--= 222 = Henry G. Knicut, Chief. 
Commodity Exchange Administration___.---- J. W. &. Duvun, Chef. 
ucaurojeO ary Undustriy = =a see O. K. REED, Chief. 
Bureau of Entomology and Plant Quarantine. Linz A. Strone, Chief. 
Office of Expervment Stations=2= = 222) = JAMES T. JARDINE, Chief. 
Farm Security Administration. _...-..------ W. W. ALEXANDER, Administrator. 
Food and Drug Administration__.._____---~- Water G. CAMFBELL, Chief. 
POneStES CPULCE es PS eS ee a FERDINAND A. SrLcox, Chief. 
Burequof-Home Economics= 2=2-— 2-4 = Louise STANLEY, Chief. 
DSLR pe Paes Sei rec opt More Ps oe CLARIBEL R. BARNETT, Librarian. 
Bureaucof lant dnausye= aoe E. C. AucHTER, Chief. 
Bureau of Public Roads_____- GE Safe Se Tuomas H. MacDona.tp, Chief. 
SoulsConservation Service 22 2 a H. H. Bennett, Chief. 
Weather Bureau: 223022 2 eee F. W. ReICHELDERFER, Chief. 
This circular is a contribution from 
Bureau of Entomology and Plant Quarantine. Lun A. Strone, Chief. 
Division of Fruit Insect Investigations__. D. L. Van Dinu, Principal Ento- 
mologist, in Charge. 
Division of Insecticide Investigations__.. R. C. Roarx, Principal Chemist, in 
Charge. 
10 
U.S. GOVERNMENT PRINTING OFFICE: 1939 
For sale by the Superintendent of Documents, Washington, D.C. - - - - *= = = = = Price 5 cents 
