192 DILUVIUM ON SUMMITS AS WELL AS LOW LANDS. 
table lands of the interior: e. g. on the north of Bridlington there 
are beds of this kind forming a cap, on the chalk hills and cliffs be¬ 
tween that town and flam borough Head; they are also found, in a 
similar position, between Flamborough Head and Filey Bay, as well 
as on the top of the cliffs near Scarborough, and on the north of Tyne¬ 
mouth. They also occupy the whole coast of the Holderness part of 
Yorkshire and the coast of Lincolnshire, and form the entire district 
between the sea and the wolds of these two counties. They abound 
still further on the shores of Norfolk, Suffolk, and Essex, forming 
along all this coast cliffs that overhang the sea, and are undergoing a 
perpetual destruction by the waves, so that many villages have been 
lost, and the ground on which they stood reduced below the level of 
the present sea*. In the interior, they are spread widely over the 
table-lands of Suffolk and Norfolk; and in the north cover much of 
the country between Newcastle and Tynemouth, and between Stock¬ 
ton-on-Tees and Darlington j\ 
Their most common character in the localities here enumerated 
is that of a tough bluish clay, through which are dispersed irregularly 
pebbles of various kinds, together with the bones of elephants 
and other animals before spoken of. The pebbles are of two classes, 
1. composed of the wreck of the adjacent inland districts of England; 
2. large blocks and pebbles of many varieties of primitive and tran¬ 
sition rocks which do not occur in England, and which can only be 
accounted for by supposing them to have been drifted from the 
* See Mr. Greenough’s Geological Map for the names of lost villages all along the 
east coast of England. The old church-yard at Walton, in Essex, is at this time (1823), 
under the process of being cut away. It will, in a few years, be wholly destroyed. 
j- It is well displayed in the quarries where the great Whin dyke crosses the Tees, 
a few miles above Stockton. 
