Chapter XV: Section 13: The original cost of the site and buildings of any

State industrial farm, and all additions thereto, and all fixed overhead charges in conducting the institution, shall be paid by the Commonwealth out of moneys appropriated for the purpose by the General Assembly.

The cost of the care and maintenance of the inmates of such institution shall be certified monthly to the counties from which inmates shall have been committed. Such cost shall be paid by the counties in proportion to the number of days spent by the inmates committed from each county. All payments shall be on requisition of the board of managers and on warrants of the county commissioners countersigned by the county controller.