100 
Essex Well-Sections. 
Maldon (Heybridge). — (a), Mr. Bentail's house , about 
100 yards from the above. 1872. (b), By the Churchyard. 
Same authority as above. 
(a) 
[Valley] gravel. 9 to 10 
London Clay . 116 
Sandstone . a few inches 
(&) 
10 to 11 
115 
a little 
To sand and water 
126 
126 
Plaistow Wharf. —Lyle & Co. 1888. 
Made and communicated by Messrs. Docwra. 
Bore of various diameters. 
15 ft.] 
[Woolwich 
Thickness. 
Bungham [? made ground or alluvium ?] ... 14 ... 
Ballast [gravel] . 214 ... 
[London Clay, (Blue clay . 14~ ... 
.Black [flint] pebbles . 1 ... 
( Bark Sand. 184 ••• 
Beds, 39 ft.] } Yellow cfaj With . 
[Tlianet Sand, j Light green loamy sand ... 2 
614 ft.] t Loamy green sand . 594 ••• 
Chalk. 18 in. bed of flints at the depth of 
810 feet, another at 896, and an 18 in. bed 
of hard chalk at 400 . 484 ... 
Depth. 
14 
354 
494 
504 
69' 
82 
894 
914 
151 
635 
Possibly some of the sand classed as Tlianet may belong to 
the Woolwich Beds. 
Prittlewell. —For the Southend Waterworks. About a tenth 
of a mile S.S.E. from the Vicarage. 1882. 
Communicated by Mr. T. Hawksley, F.R.S. 
Shaft about 360 feet; the rest bored. 
Water-level 143 feet down. 
Thickness. 
Soil 
[Post-Glacial 
Drift, 
nearly 45 ft.] 
( 'Brick-earth . 
White loam and sand ... 
Red sand, with a 8 inch 
layer of brown loam a 
foot down, and a 2 inch 
layer 2 feet down . 
Gravel and sand . 
Yellow sand; junction 
with bed below show¬ 
ing a dip . 
FT. IN. 
1 6 ... 
8 6 ... 
1 0 ... 
4 7 ... 
4 8 ... 
26 0 ... 
Depth. 
FT. IN. 
1 6 
10 0 
11 0 
15 7 
20 8 
46 5 
