The London/Essex border - South Weald
The London/Havering/Essex boundary continued down the Weald Brook
The Weald Brook flows south east towards the River Ingrebourne and the Thames. It is joined by a stream from the north east rising in the area of the chalybeate spring.
Post to the north Weald Park
Sites on the Essex side of the border
Chalybeate Spring. The water was said to be chiefly “splenetic with a small impregnation of sulphur," and to have “drying and astringent quality.” It was recommended for haemorrhages.