176 
W. WHITAKEK-HEETS WELL- SECTIONS. 
Cheshunt (Turnford).—Hew River Company. Sunk and communi¬ 
cated by Messrs. Docwea. Over 3,000,000 gallons a day from 
the Chalk, in which, at a depth of 570 feet, there was a fissure, 
causing a 34-inch chisel to drop 7 feet. 
Ft. 
Gravel .. 35 ? 
London Clay .. ..... ... 30 ? 
heading Beds . . 50 
To Chalk * 
, Specimens from 362 to 736 feet. Speci- 
i mens from 746 to 756 feet are of grey 
Chalk . < chalk ; at 758 feet of nearly white and 
I hard chalk; from 751 to 771 feet of 
' grey clayey chalk . 
f Specimens all much alike ; 785 feet, dark 
i grey calcareous sand ; 795, 797, lighter 
[Upper Greensand] <( grey micaceous sand ; 803, 806, 809, 
j the like, hut darker; 816, soft grey 
^ calcareous sand.f . 
f Specimens of clay from 824 to 980 feet, 
j the last with Inoceramus and a small 
I phosphatic nodule. At 980^ feet frag- 
Gault .^ ments of Belemnites and F phosphatic 
nodules (? fallen down, the 980 feet 
i specimen being marked “end of 
^ Gault”) . 
1 Purple shale (P calcareous). The last 
core 15 feet long and about 15 inches 
in diameter .. 
115 
670 ? 
31 ? 
164 
30 
1010 
Essenden Place.— Communicated (to Prof. T. McK. 
Paron Dimsdale. 
Gravel and sand . 
Blue [London] Clay . . 
Yellow clay [partly London Clay, partly Reading Beds] 
Layer of flints 
To Chalk 
Chalk with flints 
Hughes) by 
Ft. 
26 
104 
40 
170 
170 
340 
Hadham, Little.— The Home Earm. Shaft, 
municated by Mr. G. Ingold. 
White and blue clay . 
Shingly gravel. . 
Brown clay .. . 
Chalk . 
Sunk and com- 
Ft. 
39 
7 
1 
15 
62 
* A note from Messrs. Docwra makes this 102J, and makes the bottom of the 
Chalk 730ft. This however does not agree with the specimens, and probably does 
not include the Chalk Marl. Also makes the Gault at 756ft., which is wrong, 
the specimens showing Chalk Marl. 
+ Messrs. Docwra’s note describes some beds as sandstone, and seems to carry 
the Upper Greensand to 817| feet deep. 
