Treatment of floor cracks and other hiding places.—Carpet-beetle larvæ often secrete themselves in the cracks of flooring, beneath base boards, and in other openings about houses formed by the usual shrinking or settling of woodwork. The larvæ feed upon the lint which gathers in such places. It is, therefore, an excellent procedure to have all such openings closed where possible by filling in with putty or patented crack-fillers. Any cracks that can not be filled in this manner should be periodically filled with gasoline, kerosene, or benzine to kill larvæ. Since these liquids are inflammable, care must be exercised not to have lighted lamps or fire in any form about until after the rooms are well ventilated.
ORGANIZATION OF THE
UNITED STATES DEPARTMENT OF AGRICULTURE.
| 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 Grain Future Trading Act Administration | { | Chester Morrill, Assistant 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
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GOVERNMENT PRINTING OFFICE
WASHINGTON, D. C.
AT
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PURCHASER AGREES NOT TO RESELL OR DISTRIBUTE THIS
COPY FOR PROFIT.—PUB. RES. 57, APPROVED MAY 11, 1922
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