Rochester, Kent the Blackheath Beds of sand and gravel. As a human settlement, Rochester became established as the lowest river crossing of the River Medway, well before the arrival of the Romans. It is a focal point between two routes, being part of the main route connecting London with the Continent and the north-south routes following the course of the Medway connecting Maidstone and the Weald of Kent with the Thames and the North Sea. The Thames Marshes were an important source of salt. Rochester's roads follow north Kent's valleys and ridges of steep-sided chalk bournes. There are four ways out of
Isinglass River Isinglass River The Isinglass River is a river in Strafford County in southeastern New Hampshire, United States. It rises at Bow Lake in the town of Strafford, but is also fed through its tributaries by Ayer's, Nippo, Round and Long ponds in Barrington. The Isinglass flows east to meet the Cochecho River below Rochester. The river is part of the Piscataqua River watershed. In "History of the Town of Rochester, N.H.," published 1892, author Franklin McDuffee remarks that the Isinglass River is "probably named from the mica in its bed or along its banks." Isinglass is a synonym for mica,