MERSEY into the Irish Sea at Liverpool. By means of inland navigation, it has communication with the rivers Dee, Ribble, Ouse, Trent, Derwent, Severn, Humber, Thames, Avon, &c.; a navigation which, including its windings, extends above 500 miles, in the counties of Lincoln, Nottingham, York, Lancaster, Westmoreland, Chester, Stafford, Warwick, Leicester, Oxford, Worcester, &c.