copperas-stone

Updated: June 8, 2025

This point called the Naze, and the north-east point of Kent, near Margate, called the North Foreland, making what they call the mouth of the river and the port of London, though it be here above sixty miles over. At Walton-under-the-Naze they find on the shore copperas-stone in great quantities; and there are several large works called copperas houses, where they make it with great expense.

Daniel Defoe - Tour through Eastern Counties of England, 1722