X 
INTRODUCTION. 
repeated along the entire line, from Bimlington heights in Holderness, 
to Itedcar. 
It will thus appear that no pains have been spared to copy the 
natural sections of this coast as perfectly as possible; and when it is 
added that, to complete my knowledge of the subject, I have assiduously 
investigated and measured the interior of the country, have drawn up- 
wards of four hundred species of fossils, and examined above a hundred 
more, having received the most liberal and ample assistance from my 
intelligent friends Mr. Bean and Mr. Williamson of Scarborough, and 
several other collectors on the coast, and geologists in different parts 
of the county ; it will not, I hope, be thought that this work has been 
attempted without sufficient materials to render it useful. 
The strata which I have undertaken to describe, have received the 
notice of several eminent geological writers ; they have been, in some 
degree, illustrated by the general map of Mr. Greenough, and by the 
remarks of Mr. Conybeare, in his outlines of the Geology of England ; 
by the comparative view which Mr. Murchison has given of the analo- 
gous strata discovered at Brora; and by Professor Sedgwick’s paper* 
on some parts of this district, in which he has shewn the identity of 
the alum shale of Whitby with the lias of Dorsetshire, and of the 
Scarborough oolite and its subjacent sandstone with the coralline 
oolite and calcareous grit of the southern counties, and has successfully 
compared the substratum of the vale of Pickering with the Kimmeridge 
clay. But these publications are far from embracing the whole of the 
subject, nor have I borrowed from them any thing but a confirmation 
of my own deductions. The details of the present work have been 
* Annals of Philosophy for May, 1826 . 
