A report and survey of the canal, [electronic resource] : Proposed to be made on one level, from Waltham-Abbey to Moorfields. Also a report and survey, of a line, Which may be continued from Marybone to the said proposed canal, In Case any suture Design of Navigation to that Place, or the North Side of London, From the Rivers Thames or Coln, should ever take Place. By Robert Whitworth. To which is subjoin'd, An address to the Right Honourable the Lord-Mayor, and the Worshipful the Aldermen and Common-Council, of the City of London, on the Importance and great Utility of canals in General; The Advantages which may fairly be expected from the canal now proposed; And the Necessity of promoting, near the Metropolis, such Improvements as are now carrying on in the more distant Parts of this Kingdom, as being the true Means of preserving to the Part of London that Superiority in Foreign as well as Country Trade, which it has hitherto enjoyed. By James Sharp.