SOME ESSEX WELL-SECTIONS.
169
As will be seen, there is some difficulty in fixing the divisions of
the Eocene formations, and this was also the case in regard to the
well at Glenny's Brewery (Essex Naturalist, vol. vi., p. 48).
(47.) Birchanger.—Blacklands. 1895.
Made and communicated by Mr. G. Ingold.
(47.) Canfield, Great.—Helman's Cross. 1893.
Made and communicated by Mr. G. Ingold.
(47.) Chesterford, Great.—"The Elms" (a house by the cross-
roads, at the eastern end of the village). 1893.
Made and communicated by Mr. G. Ingold.
This is of interest, as contrasting with the following :
(47.) Chesterford, Great.—A little northward of the church
1894.
Boring made and communicated by Messrs. Tilley.
{Remarks in these brackets added from specimens.}
About 142 feet above Ordnance Datum.
Level of surface-water, in well, 25 feet down. Level of Chalk-
water, 21.4 feet. (See Analysis at p. 183, post.)