This Act shall apply to every undertaking in Scotland authorized by any Act of Parliament which shall hereafter be passed, and which shall authorize the taking of lands for such undertaking, and this Act shall be incorporated with such Act; and all the provisions of this Act, save so far as they shall be expressly varied or excepted by any such Act, shall apply to the undertaking authorized thereby, so far as the same shall be applicable to such undertaking, and shall, as well as the clauses and provisions of every other Act which shall be incorporated with such Act, form part of such Act, and be construed together therewith as forming one Act.