3.— Every regulation and order made under this Act, other than an order made under section 1(2) or a regulation made under section 26, shall be laid before each House of the Oireachtas as soon as may be after it is made and, if a resolution annulling the regulation or order is passed by either such House within the next 21 days on which that House sits after the regulation or order is laid before it, the regulation or order is annulled, but without prejudice to the validity of anything previously done thereunder.