Report concerning the different lines surveyed by Messrs. John Ainslie & Robert Whitworth, jun. for a canal proposed to be made between the cities of Edinburgh and Glasgow, and intended to communicate with the Frith of Forth at Leith, and the river Clyde at the Broomie Law : with an account of a running level taken for a new line by Linlithgow and Falkirk / by John Rennie ..