52 STAT.] 75TH CONG. , 3 D SESS.-CH. 464-JUNE 16, 1938 charged their proportionate share of the necessary general expenses of the Center not covered by this appropriation. FOREST ROADS AND TRAILS For carrying out the provisions of section 23 of the Federal High- way Act approved November 9, 1921 (23 U. S . C . 23), including not to exceed $59,500 for departmental personal services in the District of Columbia, $14,000,000, which sum consists of the balance of the amount authorized to be appropriated for the fiscal year 1938 and $7,000,000 of the amount authorized to be appropriated for the fiscal year 1939 by the Act approved June 16, 1936, to be immediately available and to remain available until expended: Provided, That this appropriation shall be available for the rental, purchase, or con- struction of buildings necessary for the storage of equipment and supplies used for road and trail construction and maintenance, but the total cost of any such building purchased or constructed under this authorization shall not exceed $7,500: Provided further, That there shall be available from this appropriation not to exceed $50,000 for the completion of construction of buildings at Denver, Colorado, for the storage and repair of Government equipment for use in the construction and maintenance of roads. INTERCHANGE OF APPROPRIATIONS Not to exceed 5 per centum of the foregoing amounts for the mis- cellaneous expenses of the work of any bureau, division, or office herein provided for shall be available interchangeably for expendi- tures on the objects included within the general expenses of such bureau, division, or office, but no more than 5 per centum shall be added to any one item of appropriation except in cases of extraor- dinary emergency. WORK FOR OTHER DEPARTMENTS During the fiscal year 1939 the head of any department or inde- pendent establishment of the Government requiring inspections, analyses, and tests of food and other products, within the scope of the functions of the Department of Agriculture and which that Department is unable to perform within the limits of its appropria- tions, may, with the approval of the Secretary of Agriculture trans- fer to the Department of Agriculture for direct expenditure such sums as may be necessary for the performance of such work. PASSENGER-CARRYING VEHICLES Within the limitations specified under the several headings the lump-sum appropriations herein made for the Department of Agri- culture shall be available for the purchase of motor-propelled and horse-drawn passenger-carrying vehicles necessary in the conduct of the field work of the Department of Agriculture outside the District of Columbia: Provided That such vehicles shall be used only for official service outside the District of Columbia, but this shall not prevent the continued use for official service of motortrucks in the District of Columbia: Provided further, That the limitation on expenditures for purchase of passenger-carrying vehicles in the field service shall be interchangeable between the various bureaus and offices of the Department, to such extent as the exigencies of the service may require: Providedfurther, That appropriations contained in this Act shall be available for the maintenance, operation, and repair of motor-propelled and horse-drawn passenger-carrying vehi- 749 Forest roads and trails. 42 Stat. 218, 661. 23U.8.C.§23. 49 Stat. 1519. 23 U. S. C., Supp. III, ch. 1. Provisos. Authorized expend- itures. Buildings at Den- ver, Colo. Interchange of ap- propriations. Limitation. Work for other de- partments, etc. Passenger-carrying vehicles. Availabilityof funds for purchase, etc. Provisos. Limitation on use. Interchangeability. Maintenance, etc.
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