Leach, Edmund, surveyor.

A treatise of universal inland navigations, and the use of all sorts of mines . A work entirely new. Recommended to the inhabitants of Great-Britain and Ireland. Plainly demonstrating the possibillity of making any river and a stream of running water in the world navigable, by can[al]s of a new construction, without locks and dams, with estimations of the expence of the making thereof per mile in length. Together with the construction, explanation, and use, of a new invented mechanical and hydraulical machine, for inland navigation, of this new construction, which will raise, on an inciined plane, boats or lighters, and cargoes all at once, even to fifty fathoms in perpendicular, without unloading. To which is added a supplement, plainly demonstrating the possibility and means whereby a ship of any size may be launched at any time, except at low water, without waiting the time of high water; together with the construction, explanation, and use of a machine for that purpose, with tables to shew the power and force required to draw or roll a ship up upon a launch of any size not more than two thousand tons. By Edmund Leach, surveyor.