ORGANIZATION OF THE UNITED STATES DEPARTMENT OF AGRICULTURE 
WHEN THIS PUBLICATION WAS LAST PRINTED 
Sccrelary o;-A grieutiure == = ee ee HENRY A. WALLACE. 
UNC SCOrELOTY ae ae. | a ee ee ee EEE M. L. WILSON. 
ASSTSLOME SECT CLOTY os a ee Harry L. Brown. 
Coordinator of Land Use Planning and Di- M. S. EIsENHOWER. 
rector of Information. 
Director of Extension Work=___—- C. W. WARBURTON. 
Dipector Of nance. =~ = ees Ae We7 Ax, Ju:Nap: 
Dir ECtOTMOpfeRer sonnel 22 aes eae as Does Pai Roy F. HENDRICKSON. 
DiTCCLOV<Of CCSCANCIUn tt = a en ee es JAMES T. JARDINE. 
SS OUICTL OT OE Ee seep SE I es a MAstTIN G. WHITE. 
Agricultural Adjustment Administration____~ H. R. Tottey, Administrator. 
Bureau of Agricultural Economics________-__-_ A. G. BLACK, Chief. 
Bureau of Agricultural Engineering_______-_~ S. H. McCrory, Chief.. 
Bureau of Animal Indusiry— JOHN R. MoHLER Chief. 
Bureau of Biological Survey_____-___-_______ Ira N. GABRIELSON, Chief. 
Bureau of Chemistry and Soils________--_____ HEnrY G. KNIGHT, Chief. 
Commodity Exchange Administration________ J. W. T. Duvet, Chief. 
Buceat Of Dairying Strips eee ee O. E. RrEen, Chief. 
Bureaw of Entomology and Plant Quarantine. Lee A. Srrone, Chief. 
Office of Experiment Stations___.2____~=__-= JAMES T. JARDINE, Chief. 
Farm Security Administration______________ W. W. ALEXANDER, Administrator. 
Food and Drug Administration______________ WALTER G. CAMPBELL, Chicf. 
HORCSE gS CROUC Cao oa fae ING ee erg: tas ot brea FERDINAND A. Siucox, Chief. 
BUTecouofe Lome, HEONOMIGS== ss 22 as Ee LOUISE STANLEY, Chief. 
EO GOK peee ere = EEA eRe OE een ALA te Oth eS CLARIBEL R. BARNETT, Librarian. 
BUEeCOAL Oj -Elant AnNG@usity sss) ee EK. C. AucHTER, Chief. 
BULCCUMGOE PUOUGVROOGS ee THoMAS H. MacDonatp, Chief. 
SotlsaConservation Service. 22s as ae H. H. BENNETT, Chief. 
Weather Bure ts =e ee See ha a od Rat F. W. REICHELDERFER, Chief. 
This publication is a contribution from 
Bureau of Entomology and Plant Quarantine. Ler A. Strone, Chief. 
Division of Insect Identification_________ C. F. W. MuESEBECK, Principal 
Entomologist, in Charge. 
40 
U.S. GOVERNMENT PRINTING OFFICE: 1939 
SE A 
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