Flaxman Charles John Spurrell,
VCH
(1908)
“ They are the result of the slow and creeping work of centuries. When the country was occupied by the Romans the low lands of the Thames were dry, that is not invaded with salt water. The river was fresh and very shallow, with meandering streams from the uplands adjacent. Large trees hundreds of years old, of such kinds as we have now growing, covered the bottoms and spread over the area of the present marshland, and everywhere are found Roman remains, pottery, and flint and chalk used in building. This level, which is a little below the Ordnance datum, may be called the Roman level. ”
