The notices referred to insub-section (6) of Sec. 92 of the Act shall be sent by post to thelast known addresses of the persons concerned as recorded in thesociety's books and certificates of posting shall be obtainedtherefor:
Provided that the liquidator may at his discretion send all or anyof the notices by registered post.
23 -A. Security from liquidator.- Where a liquidator is appointedby the Controller under the provisions of sub-section (1) of Sec. 90of the Act, the Controller may demand from the liquidator suchsecurity and in such form as he may determine.