That upon the admission of each of said states into the union, in accordance with the provisions of this act, fifty sections of the unappropriated public lands within said states, to be selected and located in legal subdivisions as provided in section 10 of this act, shall be, and are hereby granted to said states for public buildings at the capital of said states for legislative, executive, and judicial purposes, including construction, reconstruction, repair, renovation, furnishings, equipment, and any other permanent improvement of such buildings, and the acquisition of necessary land for such buildings, and the payment of principal and interest on bonds issued for any of the above purposes.