 The power of Convocation of dealing with cases of heresy has been exercised but rarely, and then to no purpose.It continued to be convoked at the beginning of each Parliament, but its sittings were interrupted from 1640 to 1660 (being largely replaced by the puritan Westminster Assembly of Divines), to be resumed after the Stuart Restoration.In 1689, in view of the opposition of the clergy to the Toleration Act of William III and Mary II, no summons was issued to Convocation.