If at any time, except when the Legislative Assembly is in session, the Lieutenant Governor thereof is satisfied that circumstances exist which render it necessary for him to take immediate action, he may promulgate such Ordinances as the circumstances appear to him to require:

   Provided that the power of making an Ordinance under this section shall extend only to those matters with respect to which the Legislative Assembly has power to make laws.

   (2)  An Ordinance promulgated under this section shall have the same force and effect as an Act of the Legislative Assembly assented by the Lieutenant Governor but every such Ordinance—

   (a)  Shall be laid before the Legislative Assembly and shall cease to operate at the expiration of six weeks from the re-assembly of the Legislative Assembly, or if before the expiration of that period a resolution disapproving it is passed by the Legislative Assembly; and

   (b)  May be withdrawn at any time by the Lieutenant Governor.