The English improver, or, A new survey of husbandry : discovering to the kingdome, that some land, both arable and pasture, may be advanced double or treble other land to a five or tenfold, and some to a twenty fold improvement, yea, some now not worth above one, or two shillings, per acree, be made worth thirty, or forty, if not more : clearly demonstrated from principles of sound reason, ingenuity, and late but most certaine reall experiences, held forth under six peeces of improvement ... /