_Secretary of Agriculture_ Henry C. Wallace. _Assistant Secretary_ C. W. Pugsley. _Director of Scientific Work_ E. D. Ball. _Director of Regulatory Work_ _Weather Bureau_ Charles F. Marvin, _Chief_. _Bureau of Agricultural Economics_ Henry C. Taylor, _Chief_. _Bureau of Animal Industry_ John R. Mohler, _Chief_. _Bureau of Plant Industry_ William A. Taylor, _Chief_. _Forest Service_ W. B. Greeley, _Chief_. _Bureau of Chemistry_ Walter G. Campbell, _Acting Chief_. _Bureau of Soils_ Milton Whitney, _Chief_. _Bureau of Entomology_ L. O. Howard, _Chief_. _Bureau of Biological Survey_ E. W. Nelson, _Chief_. _Bureau of Public Roads_ Thomas H. MacDonald, _Chief_. _Fixed Nitrogen Research Laboratory_ F. G. Cottrell, _Director_. _Division of Accounts and Disbursements_ A. Zappone, _Chief_. _Division of Publications_ Edwin C. Powell, _Acting Chief_. _Library_ Claribel R. Barnett, _Librarian_. _States Relations Service_ A. C. True, _Director_. _Federal Horticultural Board_ C. L. Marlatt, _Chairman_. _Insecticide and Fungicide Board_ J. K. Haywood, _Chairman_. _Packers and Stockyards Administration_ { Chester Morrill, _Assistant _Grain Future Trading Act Administration_ { to the Secretary_. _Office of the Solicitor_ R. W. Williams, _Solicitor_. This bulletin is a contribution from Bureau of Entomology L. O. Howard, _Chief_. Stored-Product Insect Investigations E. A. Back, _Entomologist in Charge_. ADDITIONAL COPIES OF THIS PUBLICATION HAY BE PROCURED FROM THE SUPERINTENDENT OF DOCUMENTS GOVERNMENT PRINTING OFFICE WASHINGTON, D. C. AT 5 CENTS PER COPY PURCHASER AGREES NOT TO RESELL OR DISTRIBUTE THIS COPY FOR PROFIT.--PUB. RES. 57, APPROVED MAY 11, 1922 [Illustration: Upside-down triangle ▽] WASHINGTON: GOVERNMENT PRINTING OFFICE: 1923 * * * * * Transcriber Notes All illustrations were moved so as to not split paragraphs. End of the Project Gutenberg EBook of USDA Farmers' Bulletin No. 1346: Carpet Beetles and Their Control, by E. A. Back