ORGANIZATION OF THE 
UNITED STATES DEPARTMENT OF AGRICULTURE, 
January 9, 1924. 
Secretary of Agriculture_1_i..--__ HENRY C. WALLACE. 
masistant: SCCTetary tht > Ae, ti fie) wes Howarp M. Gore. 
Director of Scientific Work. 2 "se BE. D. BALt. 
Director of Regulatory Work +i -—. WALTER G. CAMPBELL. 
Director of Extension, Workc. -_i22_ _=- C. W. WARBURTON. 
Beeasher Bureau. 2 a ore oe OE ees CHARLES F. MARVIN, Chief. 
SE LS eR aE a ae a Ae PR ag R. W. WILLIAMS. 
Bureau of Agricultural Economies ______ __. HENRY C. TAytor, Chief. 
Bureau of Animal Industry =. ss JOHN R. MOHLER, Chief. 
murenu of Plant .inadusiy. 3 |. xt een WiiriaAm A. Taytor, Chief. 
Bemres? SCTULCC. 62 et es et et ge Pe W. B. GREELEY, Chief. 
Bureau of Chemistry_.—__-_-— ___._..... CHARLES A. BROWNE, Chief. 
Beurcou of Sovlse it < st) ewes ee ee eee MILTON WHITNEY, Chief. 
Bureau of Entomology_____-_--______-___-- L. O. Howarp, Chief. 
Bureau of Biological Survey 22 EK. W. NE tson,. Chief. 
Bureau of ‘Public Roads Peer THOMAS H. MAcDONALD, Chief. 
Bureau of Home Economics____________-_. LouIsE STANLEY, Chief. 
Ojice of Experiment Stations_____-—-_ EK. W. ALLEN, Chief. 
Fixed Nitrogen Research Laboratory_____. F. G. CorTrTrety, Director. 
Pere PLOW ee, Ae Ps ee eae Poe L. J. HAYNEs, in Charge. 
[LT 6 | ae eR Mee Rely aE) SORE Sh CLARIBEL R. BARNETT, Librarian. 
Peeeral: Horhicultura) Board= +) = C. L. MARLATT, Chairman. 
Insecticide and Fungicide Board__________ J. K. Haywoop, Chairman. 
Packers and Stockyards Administration___| CHESTER Morrity, Assistant to the 
Grain Futures Trading Act Administration. Secretary. 
This bulletin is a contribution from 
Bureau of Animal Industry__-----------~- JoHN R. MOHLER, Chief. 
Pathological Divisions. ._.- 2 22 JOHN S. BUCKLEY, Chief. 
14 
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