The report of Mess. John Grundy, Langley Edwards, and John Smeaton, engineers, concerning the present ruinous state and condition, of the River Witham, and the Navigation thereof, from the city of Lincoln, thro' Boston, to it's outfall into the sea ; And of the Fen Lands on both Sides the said River. Together with proposals and schemes for restoring, Improving, and Preserving the said river and Navigation, And also for effecting the Drainage of the said Fen Lands. To which is annexed a plan, and proper estimates of the Expences in performing the several Works recommended for those Purposes.