ORGANIZATION OF THE 
UNITED STATES DEPARTMENT OF AGRICULTURE. 
Sere OF Agriculinure "22 eee HENRY C. WALLACE. 
ASSESUIMTL SS CONEVOTY = =~ ee C. W. PUGSLEy. 
Director of Scientific Work __________-____ Bi. dD; AGE, 
Director of Regulatory Work_____________. 
WEAERCr Bureaus so 520s ea. 2 eae: CHARLES F. MARVIN, Chief. 
Bureau of Agricultural Economics________. Henry C. TAytor, Chief. 
Bureau of Animal Indusiry______--___._-__- JOHN R. MOHTER, Chief. 
Barca of Ciont tusirys_ Ss oe eee WILLIAM A. TAytor, Chief. 
TST SeS CTC Cae aa al Regal Oe eho SES W. B. GREELEY, Chief. 
EE OF, SC RETASUNY oe es es ZS WALTER G. CAMPBELL, Acting Chief. 
SSAUECAIUTOT SOUS ok re ee es MILTON WHITNEY, Chief. 
Bureas of Lntomology of st ess See ee L. O. Howarp, Chief. 
Bureau of Biological Survey____________+- BE. W. NELson, Chief. 
Bareau of Public: Rodis es 2 Se eS THOMAS H. MACDONALD, Chief. 
Fired Nitrogen Research Laboratory__._.. F. G. CoTrreiy, Director. 
Division of Accounts and Disbursements_.. A. ZAPPONE, Chief. 
Division of Publications____—_- EDWIN C. PowELL, Acting Chief. 
WEAR TY ke 5 A oS Eis 3 ee Se ae, CLARIBEL R. BARNETT, Librarian. 
Sires elaions: Service = 2 a A. C. TRUE, Director. 
Federal Horticultural Board___-_______-_- C. L. MARLATT, Chairman. 
Insecticide and Fungicide Board_____-_____ J. K. HAywoop, Chairman. 
Packers and Stockyards Administration____- CHESTER MorrRIL1, Assistant to the, 
Grain Future Trading Act Ad ater Oe Secretary. 
Ojice 6] -the SOUGtOr . 2 ee R. W. WILLIAMS, Solicitor. 
This bulletin is a contribution from 
Bureau of Agricultural Economics_______-. HENRY C. TAyYtor, Chief. 
Division of Costs of Marketing_______. £ A. V. SWARTHOUT, in charge. 
52 
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OF THIS PUBLICATION MAY BE PROCURED FROM 
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GOVERNMENT PRINTING OFFICE 
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AT 
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PUI-CHASER AGREES NOT TO RESELL OR DISTRIBUTE THIS 
COPY FOR PROFIT.—PUB. RES. 57, APPROVED MAY 11, 1922 
V 
