Essex Well-Sections. 
161 
Thickness. Depth. 
[London Clay, 
362 ft.] 
[Oldhaven Beds, 
Woolwich Beds, 
andThanet Beds.] 
Chalk, 305 ft. 
FT. 
j Yellow clay . 2 
[Clay . 360 
Sands . 162 
Green flints . 0 
'Chalk with flints . 118 
Hard chalk without flints 35 
■ Soft chalk with flints ... 118 
I Yery hard chalk with flints 22 
lSoft chalk with flints ... 11 
IN. FT. 
0 ... 48 
1 ... 408 
6 ... 571 
6 ... 571 
6 ... 690 
0 ... 725 
0 ... 843 
0 ... 865 
7 ... 866 
IN. 
5 
6 
0 
6 
0 
0 
0 
0 
7 
This well is remarkable for the great thickness of sand and 
gravel above the London Clay, and for the thickness of the 
Lower London Tertiaries (the beds between the London Clay 
and the Chalk), in which it agrees with the Southend well, 
noticed in Geological Survey Memoirs, vol. iv., p. 441. 
Prittle well. — Vicarage. 
From Dr. R. T. Thorne, of the Local Government Board. 
Surface soil, brick-earth, gravel, and sand.over 40 
London Clay .about 380 
Lower London Tertiaries, ? depth. 
Quendon. —Hall Farm. 
Sunk and communicated by Mr. G. Ingold. 
Shaft 40 feet; the rest bored. 
Water at 29 feet. 
Gravel and clay . 18 
Soft white chalk, with flints. 77 
95 
In an old well at the Hall, 90 feet deep, there is red sand 
at the bottom. 
Radwinter. — Brewery, near the Church. 
Sunk and communicated by Mr. G. Ingold. 
Shaft 28 feet; the rest bored. 
Water-level 21 feet down. 
Thickness. Depth. 
Made earth. 1 ... 1 
(Brown clay . 4 ... 5 
[? Boulder j White clay . 5 ... 10 
Clay.] j Dark stony clay . 4 ... 14 
[Blue clay. 41 ... 55 
Chalk . 25 ... 80 
