Reflections on Inland Navigations:: And a New Method Proposed for Executing the Intended Navigation Betwixt the Forth and the Clyde, in a Complete Manner, at an Expence a Third Less Than what that Work Has Hitherto Been Estimated At. The Same Method Applied to Almost All Rivers and Rivulets, by which Great Britain and Ireland Might Have, at a Very Easy Expence, Above 5,000 Miles of New Inland Navigations..