60 STAT.] 79TH CONG. , 2D SESS.-CH. 588-JULY 20, 1946 sites along the Canadian and Mexican borders acquired under author- ity of the Act of June 26, 1930 (19 U. S . C. 68); and for the purchase (not to exceed one hundred and fifty), maintenance, repair, and operation of motor-propelled passenger-carrying vehicles when neces- sary for official use in field work; for the payment of extra compensa- tion earned by customs officers or employees for overtime services, at the expense of the parties in interest, in accordance with the provisions of section 5 of the Act approved February 13, 1911, as amended by the Act approved February 7, 1920, and section 451 of the Tariff Act, 1930, as amended (19 U. S . C . 261, 267, and 1451), the receipts from such overtime services to be deposited as a refund to the appropriation from which such overtime compensation is paid, in accordance with the provisions of section 524 of the Tariff Act of 1930, as amended; for the cost of seizure, storage, and disposition of any merchandise, vehicle and team, automobile, boat, air or water craft, or any other conveyance seized under the provisions of the customs laws; for the purchase of arms, ammunition, and accessories; not to exceed $689,000 for personal services in the District of Columbia exclusive of ten persons from the field force authorized to be detailed under section 525 of the Tariff Act of 1930; and reimbursement, at not to exceed 3 cents per mile, of employees for travel performed by them in privately owned automobiles while engaged in inspecting, guarding, admeasur- ing, examining, sampling, investigating, and storekeeping duties within the limits of their official station; $29,350,000, of which $300,000 shall constitute an advance fund to enable the Bureau of Customs to meet obligations incurred by it arising from services ren- dered to private interests, pending receipt of reimbursements there- from, which amount shall be returned to the Treasury not later than six months after the close of the fiscal year 1947. Printing and binding: For printing and binding, Bureau of Cus- toms, including the cost of transportation to field offices of printed and bound material and the cost of necessary packing boxes and pack- ing materials, $80,000. Refunds and drawbacks (indefinite appropriation) : For the refund or payment of customs collections or receipts, and for the payment of debentures or drawbacks, bounties, and allowances, as authorized by law, there is hereby made available such amount as may be necessary. BUREAU OF INTERNAL REVENUE Salaries and expenses: For salaries and expenses in connection with the assessment and collection of internal-revenue taxes and the admin- istration of the internal-revenue laws, including the administration of such provisions of other laws as are authorized by or pursuant to law to be administered by or under the direction of the Commissioner of Internal Revenue, including one stamp agent (to be reimbursed by the stamp manufacturers) and the employment of experts; the secur- ing of evidence of violations of the Acts, the cost of chemical analyses made by others than employees of the United States and expenses incident to such chemists testifying when necessary; telegraph and telephone service, postage, freight, express, necessary expenses incurred in making investigations in connection with the enrollment or dis- barment of practitioners before the Treasury Department in internal- revenue matters, expenses of seizure and sale, and other necessary miscellaneous expenses, including stenographic reporting services; for the acquisition of property under the provisions of title III of the Liquor Law Repeal and Enforcement Act, approved August 27, 1935 (49 Stat. 872-881), and the operation, maintenance, and repair of property acquired under such title III; for the purchase (not to exceed 573 46 Stat. 817. Overtime compen- sation. 36 Stat. 901; 41 Stat. 402; 46 Stat. 715. 19 U. S. C., Supp. V, §§ 261, 267, 1451. 46 Stat. 741 . 19 U.S. c. §1524. Personal services. 46 Stat. 741 . 19U. S. C. 1525. Use of privately owned automobiles. Services rendered to private interests. 40U.S.0.HiW- 34m.