The report of John Smeaton, engineer, and F.R.S. concerning the practicability and expence of joining the rivers Forth and Clyde by a navigable canal [electronic resource] : and thereby to join the east sea and the west : with a map of the country and a plan of the canal : addressed to the Honourable the Trustees for Fisheries, Manufactures, and Improvements in Scotland, at whose desire the survey was made