Essex Well-Sections. 155
Perhaps the top bed of sand may be the basement-bed of
the London Clay.
Dunton.—S.E. of Brentwood; Mr. Willoughby's.
Dr. J. Mitchell's MSS., vol. iii., p. 76.
100 feet dug ; bored 344 feet.
Water rose within 77 feet of the surface ; contains sulphate
of magnesia.
Epping Waterworks.—Section noted in Geological Survey
Memoirs, vol. iv., p. 434.
Another account, communicated by Messrs. Easton and
Anderson, from particulars got from Messrs. Russ and Minns,
is as follows :—
Shaft 225 feet; the rest bored.
Water-level 210 feet down.