57 STAT.] 78TH CONG., 1 ST SESS.-CH. 173-JUNE 28, 1943 Congressional Library Buildings, and the grounds about the same, Botanic Garden, legislative garage, and folding and storage rooms of the Senate, and for air-conditioning refrigeration not supplied from plants in any of such buildings; for heating the Government Printing Office and Washington City Post Office and for light and power therefor whenever available; personal and other services, engineering instruments, fuel, oil, materials, labor, advertising, and purchase of waterproof wearing apparel in connection with the maintenance and operation of the plant, $765,600. The appropriations under the control of the Architect of the Capitol may be expended without reference to section 4 of the Act approved June 17, 1910 (41 U. S . C . 7), concerning purchases for executive departments. The Government Printing Office and the Washington City Post Office shall reimburse the Capitol Power Plant for heat, light, and power whenever any such service is furnished during the fiscal year 1944, and the amounts so reimbursed shall be covered into the Treasury. LIBRARY BUILDINGS AND GROUNDS MECHANICAL AND STRUCTURAL MAINTENANCE Salaries: For chief engineer and all personal services at rates of pay provided by law, $98,300. Salaries, Sunday opening: For extra services of employees and additional employees under the Architect of the Capitol to provide for the opening of the Library Buildings on Sundays and on holidays, at rates to be fixed by such Architect, $7,300. General repairs, and so forth: For necessary expenditures for the Library Buildings and Grounds under the jurisdiction of the Archi- tect of the Capitol, including minor improvements, maintenance, repair, equipment, supplies, waterproof wearing apparel, material, and appurtenances, and personal and other services in connection with the mechanical and structural maintenance of such buildings and grounds, $25,000. BOTANIC GARDEN Salaries: For personal services (including not exceeding $3,000 for miscellaneous temporary labor without regard to the Classification Act of 1923, as amended), $82,000; all under the direction of the Joint Committee on the Library. Maintenance, operation, repairs, and improvements: For all neces- sary expenses incident to maintaining, operating, repairing, and improving the Botanic Garden, and the nurseries, buildings, grounds, and equipment pertaining thereto, including procuring fertilizers, soils, tools, trees, shrubs, plants, and seeds; materials and miscel- laneous supplies, including rubber boots and aprons when required for use by employees in connection with their work; not to exceed $25 for emergency medical supplies; disposition of waste: traveling expenses of the Director and his assistants not to exceed $250; street- car fares not exceeding $25: office equipment and contingent expenses; the prevention and eradication of insect and other pests and plant diseases by purchase of materials and procurement of personal serv- ices by contract without regard to the provisions of any other Act; repair, maintenance, operation, purchase, and exchange of motor- trucks, and maintenance, repair, and operation of a passenger motor vehicle; purchase of botanical books, periodicals, and books of refer- ence, not to exceed $100; repairs and improvements to Director's 233 36 Stat. 531. Reimbursement for heat, etc. 42 Stat. 148R. 5UI.S . i. f;l: Supp. 1, § 661 el aeq.