A Board shall be established, to be called the Local Government Board for Scotland (in this Act referred to as the Board), and from and after the establishment of such Board, the Board of Supervision, established by the [8 & 9 Vict. c. 83.] Poor Law (Scotland) Act, 1845, shall cease to exist, and all the powers and duties vested in or imposed on the Board of Supervision by any Act of Parliament in force at the commencement of this Act, shall be vested in, transferred to, and imposed on the Board, and, except as otherwise provided by this Act, shall be exercised and performed by the Board in like manner and subject to the same conditions, liabilities, and incidents respectively, as such powers and duties might before the commencement of this Act have been exercised and performed by the Board of Supervision, or as near thereto as circumstances admit.