18. Power to exempt. -(1) If the Central Government is satisfied that the demand for any article or class of articles reserved by an order under section 3 outside India is such that it is not possible for the hand loom industry to meet such demand or any such article or class of articles is required to be produced for purposes of research or for the development of markets for such article or class of articles or of the handloom industry generally, it is necessary or expedient so to do, it may, by order published in the Official Gazette, exempt such article or class of articles from the operation of such order, and permit such article or class of articles to be produced by any powerloom solely for the purposes of export or for research by such institutions as may be specified in the order. (2) Every order made under this section shall be laid, as soon as may be after it is made, before each House of Parliament, while it is in session, for a total period of thirty days which may be comprised in cne session or in two or more successive sessions, and if, before the expiry of the session immediately following the session or the successive sessions aforesaid, both Houses agree in making any modification in the order or both Houses agree that the order should not be made, the order shall thereafter have effect only in such modified form or be of no effect, as the case may be; so, however, that any such modification or annulment shall be without prejudice to the validity of anything previously done under that order. | 