Changes

The traditional county was bounded by the [[River Thames]] to its south, and by tributaries of the Thames - the Rivers Colne and Lea - to its west and east respectively. The northern boundary was a somewhat meandering 'dry land' line on the edge of the Hertfordshire hills. The southern part of the county is low-lying flat land; the north is more undulating. Almost all of it is covered by Victorian or twentieth century suburbia, and the subject of appreciative poetry by Sir [[John Betjeman]].