To comprehend those works would be impossible without maps and plans; to take a lively interest in them impossible, likewise, save to an engineer or a fen-man. Suffice it to say, that in the early part of the seventeenth century we find a great company of adventurers—more than one Cromwell among them, and Francis, the great and good Earl of Bedford, at their head—trying to start a great scheme for draining the drowned ‘middle level’ east of the Isle of Ely. How they sent for Vermuyden, the Dutchman, who had been draining in North Lincolnshire, about Goole and Axholme Isle; how they got into his hands, and were ruined by him; how Francis of Bedford had to sell valuable estates to pay his share; how the fen-men looked on Francis of Bedford as their champion; how Charles I. persecuted him meanly, though indeed Bedford had, in the matter of the ‘Lynn Law’ of 1630, given way, as desperate men are tempted to do, to something like sharp practice unworthy of him; how Charles took the work into his hands, and made a Government job of it; how Bedford died, and the fen-men looked on him as a martyr; how Oliver Cromwell arose to avenge the good earl, as his family had supported him in past times; how Oliver St. John came to the help of the fen-men, and drew up the so-called ‘Pretended Ordinance’ of 1649, which was a compromise between Vermuyden and the adventurers, so able and useful that Charles II.’s Government were content to call it ‘pretended’ and let it stand, because it was actually draining the fens; and how Sir Cornelius Vermuyden, after doing mighty works, and taking mighty moneys, died a beggar, writing petitions which never got answered; how William, Earl of Bedford, added, in 1649, to his father’s ‘old Bedford River’ that noble parallel river, the Hundred foot, both rising high above the land between dykes and ‘washes,’ _i.e._ waste spaces right and left, to allow for flood water; how the Great Bedford Rivers silted up the mouth of the Ouse, and backed the floods up the Cam; how Denver sluice was built to keep them back; and so forth,—all is written, or rather only half or quarter written, in the histories of the fens. Another matter equally, or even more important, is but half written—indeed, only hinted at—the mixed population of the fens.