149 
XII. 
Some Essex Well-Sections. 
By W. Whitaker, B.A., F.G.S., Assoc. Inst. C.E. 
[A combination of papers read before the Club on March 29th, 1884, 
and February 26th, 1885.] 
» 
Haying collected accounts of the sections of many wells in 
Essex since the publication of the different Geological Survey 
Memoirs that treat of various parts of the county, I have 
thought that the Essex Field Club may be glad to have a 
description of such of these as have not found a place in any 
of those Memoirs, and are therefore left unprovided for, there 
being no prospect of the publication of any other Memoir in 
which they could appear. 
With these are included an account of one section, which 
differs in some particulars from that already published, and 
of two others, taken from published sources, which are not 
likely to be generally accessible. I likewise give particulars 
of some old wells, recorded in the MSS. of the late Dr. J. 
Mitchell, for the use of which I have to thank Professor 
Prestwick. I have great pleasure also in thanking the 
engineers, well-sinkers and others, who have so kindly given 
me information, especially as I hope for more. 
Of two sections only is there need to make special remark. 
The Loughton boring is one of the deepest in the London 
Basin, and is the third in the county that, after passing 
through the Tertiary beds, has pierced the Cretaceous beds to 
the bottom of the Gault, the other cases being at Harwich, 
and probably at Saffron Walden. 
The Wickham Bishop boring, the deepest in the county, 
is of great interest, as showing a very sharp fold of the beds 
(?with a fault), so that the bottom part of the London Clay 
and the Beading Beds have been passed through twice. Had 
I not seen specimens from this boring, it would have been 
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