16. (1) If the Government apprehends that a protected immovable antiquity is in danger of being destroyed, injured or allowed to fall into decay, it may, after consultation with the Advisory Committee, ¹[acquire such antiquity or any part thereof] under the Land Acquisition Act, 1894 (I of 1894), as for a public purpose. (2) The power of compulsory acquisition under sub-section (1) shall not be exercised in the case of -(a) any antiquity which or any part of which is periodically used for religious observances; or(b) any antiquity which is the subject of a subsisting agreement under section 12; or(c) any other antiquity unless the owner or other person competent in this behalf has, when proposed to him by the Director, failed to enter into an agreement under section 12 within such period, not being less than six months, as the Director may fix.