ORGANIZATION OF THE UNITED STATES DEPARTMENT OF 
AGRICULTURE. 
NEChCLAnU Of AQTICULiWie=- =) ae Henry C. WALLACE. 
PAIS SUS EMLIDUMNS COMCUOMY eas ee oe C. W. PUGSLEY, 
Director of Scientific Work_____—__-_--_--—_ 1D Sa SANT. 
Director of Regulatory Work____ __>= =. 
MEW LILET ABUT CUAL nk ee De CHARLES F. Marvin, Chief. 
Bureau.of Agricultural Heonomics______--~ Henry C. Taytor, Chief.: 
Bureau of Animal Industry____-—_.~-—-_____- JoHN R, MonteEr, Chief. 
Burecawof Plant Industry= 2-2 WitiiAm A. TAytor, Chief. 
NGOS S SEL Ae CR le aa W. B. GREELEY, Chief. 
UGC O ILO 1 CALCTIUS OT san ee 2 — WALTER G. CAMPBELL, Acting Chief. 
PE OURATO OY ISCO eS a ee ee ee Mitton WHITNEY, Chief. 
Bureau of Entomology—__-—-- _- __=£-______- L. O. HowArp,; Chief. 
Bureau of Biological Survey________+-____- HK. W. NEtson, Chief. 
BULNCCUAO TEE LON CHVOCU See eee. . a THomaAs H. MAcDonatp, Chief. 
Fixed Nitrogen Research Laboratory______- F.. G. Corrrety, Director. 
Division of Accounts and Disbursements___. A. ZAPPONE, Chief. 
IDUASLONTE Of PLUONCattIOns=—- Ee JOHN L. Cosss, Jr., Chief. 
AO eee meee en Ss ee CLARIBEL R. BARNETT, Librarian. 
States Relations Service________-__------- A. C. True, Director. 
Federal Horticultural Board___---____-___. C. L. Mariatt, Chairman. 
Insecticide and Fungicide Board____-----__ - J. K. HAywoop, Chairman. 
Packers and Stockyards Administration____. ! CHESTER MorriLu, Assistant to the 
Grain Future Trading Act Administration__ Secretary. 
OPiCEO ithe SOUCILON2 see ee ee R. W. WILuiAMs, Solicitor. 
This bulletin is a contribution from— 
Bureau of Entomology, L. O. HowArpn, Chief. 
Cereal and Forest Insect Investigations, W. R. Warton, Hntomologist in 
Charge. 
45 
WASHINGTON : GOVERNMENT PRINTING OFFICE : 1922 
