150 
Essex Wei I -Sections. 
Thickness. Depth 
Paver [?] Deposits. 10 -f ... 10 £ 
London Clay . 189- ... 200 
M oolwicli and Reading Beds [must 
be partly London Clay] . 105 ...305 
Thanet Sand . 49 ... 354 
Cllalk . 546? ... 900? 
Fambridge Ferry.—3 miles N. of Rockford. 
Dr. J. Mitchell’s MSS., vol. iii., opp. p. 80. 
[ Yellow clay . 30 
[London Clay.] j Blue clay . 330 
(“Water-rock” [basement-bed?] 2 
362 
Felsted.— Grammar School. 
Over 248 feet above Ordnance Datum. 
Communicated by Messrs. Easton and Anderson, from 
particulars got from Mr. Chancellor, of Chelmsford. Addi¬ 
tional particulars from Mr. D. S. Ingram. 
Shaft 140 feet; the rest bored. 
'Water-level about 81 feet down. 
Surface earth (shallow) .Thickness. Depth. 
' Boulder clay, ? 35 or 40 feet. 
. ? Sand and stones, irregular, 
12 or 15 feet (from which 
(the supply was once got ..., 
London Clay. f 9 qq 
Reading Beds (variously coloured sands, tenacious 
black clay with red patches, and a layer of 
small black flints) ... 44 ...304 
UllaiJs .. 100 ... 404 
Grays, hrooks, Shoobridge db Cods Cement Works. 
Made and communicated by Messrs. G. Isler & Co. 
Shaft 10 feet; the rest bored. 
Water-level 12 feet down. Yield 9000 gallons an hour. 
^ . Thickness. Depth. 
Orravel. 
[Glacial Drift.]... 
about 
51 
51 
260 
Chalk i 
/Chalk . 
24 
30 
Chalk and flints . 
49 
H Soft chalk. 
56 
Chalk and flints . 
71 
Hard chalk . 
76 
Chalk and flints . 
. 64 ... 
140 
