An act for draining and preserving certain fen lands and low grounds in the Isle of Ely, and county of Cambridge, between the Cam otherwise Grant-Ouze, and Mildenhall Rivers, and bounded on the South East by the Hard Lands of Isleham, Fordham, Soham, and Wicken; and for impowering the governor, bailiffs, and commonalty of the Company of Conservators of the great level of the fens called Bedford level, to sell certain lands within the said limits, commonly called invested lands.