DILUVIAL DEPOSITS, 
39 
CLIFFS WEST OF ROTTINGDEAN ; Jig. 4. 
To the west of llottingdean, the clitfs are chiefly 
composed of the regular chalk strata, containing, 
as usual, horizontal beds of siliceous nodules, and 
veins of tabular flint. Veins of marl are also very 
numerous ; and there is one of remarkable extent, 
which appears beneath the shingle, and, extending 
in a horizontal direction to within a short distance 
of llottingdean, re-appears on the eastern bank of 
the landing place. 
In that portion of the clitfs we are now describ- 
ing, the shingle terminates as represented above ; 
and, by a singular coincidence, a bed of flint no- 
dules commences immediately beneath it, and, pur- 
suing a horizontal course in the chalk, resembles 
at a distance a continuation of that bed. It is 
scarcely necessary to observe, that this apparent 
identity is a mere illusion ; a bed of rounded pebbles 
Iping upon the chalk, cannot readily be mistaken 
for a stratum of perfect chalk flints, .still occupying 
the cavities in ichic/i they icere originally formed. 
D 4 
