Clement Reid — Pliocene Beds near Cromer. 
305 
Lower Boulder-clay has always 
shown me a skarp and well- 
marked line of division, and 
neitker Mr. H. B. Wood ward nor 
myself have been able to see 
any alternation of these sands 
with the Cromer Till, sucli as 
is mentioned by Messrs. Wood 
and Harmer as exbibited in tbe 
Norfolk cliffs . 1 For tbis reason, 
and on account of tbe absence 
of glacial action (otber tban per- 
baps tbat of river ice) in any 
of tbe beds described, I bave 
thougbt it advisable to draw tbe 
line marking the commencement 
of tbe Glacial Period at tbe base 
of tbe Lower 'Boulder-clay — a 
line wkich I may mention bas, 
on independent evidence, been 
taken by Mr. H. B. Woodward 
in the neiglibourkood of Norwicb. 
The subjoined table will sbow 
the different stages of wliat may 
be well termed tbe Norfolk Crag. 
Lower Boulder Contorted Drift and 
clay. Cromer Till. 
( Myalis Beds. 
| Freskwater Bed. 
I Weybourn Beds and 
Norfolk Crag -j Forest-bed. 
Chillesford Crag . 2 
Norwicb Crag proper, or 
_ Fluvio-marine Crag . 2 
The accompanying section will 
sbow tbe relations of the several 
divisions of the Pliocene Strata in 
tbe Cliffs between Side Strand and 
Weybourn. The Glacial Beds, 
witb tbe exception of part of tbe 
Lower Boulder-clay, are omitted, 
as tbey could not be sbown on tbe 
exaggerated scale in tbe right 
Proportion to tbe otber strata. It 
will be observed tbat the Lower 
Boulder-clay occasionally scoops 
down to tbe Cbalk, as at Beeston. 
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1 Supp, to Crag Mollusca, Introduction, p. xviii. 
2 Not sbown in the Cromer Cliffs. 
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DECADE II. — YOL. IV. — NO. VII. 
20 
Explanation of Section in 
