Essex Well-Sections. 
157 
Hempstead. —Royal Oak Inn. 
Sunk and communicated by Mr. G. Ingold. 
Brown clay . 3 
Dark clay. 7 
Light blue clay. 23 
33 
Henney. —Gentries Farm. 
Made and communicated by Messrs. G. Isler & Co. 
Water-level 150 feet down. Yield, through a 2|- inch 
180 gallons an hour. 
Thickness. 
Shaft, through made ground and sand (the rest bored) 
Sand. 21^ . 
Ballast [gravel] . 6^ . 
Blue clay. 32 . 
Sand . 6-| 
[Basement-bed] 
[Glacial Drift.] 
[London Clay, 
40 ft.] 
Hard ballast 
[? pebbles] 14 
(Sand. 84- 
Reading Beds, J Clay . 1^ 
34 ft.] J Sand. 3 
1 Clay . 21 
Dead dark sand . 2 
Black sand . 6 
Green sand . 2 
. 80 
[Thanet Sand, 
10 ft.] 
Chalk . 
pump, 
Depth. 
.. 48 
.. 69 ^ 
.. 76 
.. 108 
.. 1141 
.. 116 
.. 1241 
.. 126 
.. 129 
.. 150 
.. 152 
.. 158 
.. 160 
.. 240 
High Laver. —The School. 
Information from Mr. Penning, late of the Geological 
Survey. 
Boulder Clay . 24 
Sand and gravel . 8 
32 
Ilford . —B roadie a y. 
Dr. J. Mitchell’s MSS., vol. iii., p. 71. 
Dug 63 feet; the rest bored. 
Water rose to within 30 feet of the surface. 
Gravel and yellow clay. 
(Blue clay.. 
[London Clay] j [? Basement . becl] . 
(■Yellow clay . 
■j To sand and black 
( water. 
Thickness. 
. 10 
. 93 
'Water-rock . 2 
■ Black pebbles,with 
, a very little sand 3 
. 8 
pebbles, with much 
Depth. 
... 10 
... 103 
... 105 
... 108 
... 116 
Reading Beds, 
