INTRODUCTION. i X 
account of the continuation of this range, examined by the Rev. Wm. 
V. Harcourt and myself, where it emerges from under the chalk hills. 
Whilst Mr. Smith was occupied in these researches, it was my good 
fortune to receive the directions of the Yorkshire Philosophical Society 
to arrange, as accurately as possible, in the order of stratification, the 
fossils in their extensive collection. I was delighted to find, in the 
prosecution of this duty, innumerable proofs of the truth of Mr. Smith’s 
\ iews respecting the distribution of organic fossils, and saw very clearly 
that many of the strata in the north-eastern part of Yorkshire might be 
confidently identified with well-known formations in the south of 
E ngland. F or this purpose, I drew up several comparative catalogues 
of fossils, which, under an amended form, will be found in the following 
pages. I began also in 1824, with the advantage of Mr. Smith’s society 
on the coast, the Section which is now submitted to the public ; and 
having engaged to deliver an extended course of Lectures on Geology 
before the Philosophical Societies of Yorkshire, Leeds, and Hull, I re- 
sumed the task in the autumn of 1825, and measured and examined in 
detail all the cliffs from Redcar to Bridlington. The Section, which I 
was thus enabled to draw on a very large scale, was exhibited and 
minutely explained to the members of these institutions ; it was shewn 
to Mr. Murchison on his way to Brora ; and a copy of it was used by 
M. M. Oeynhausen and Von Dechen in their examination of the York- 
shire coast. 
In October, 1827, I again surveyed and measured the whole coast 
fiom Redcar to Scarborough, and prepared sections of certain parts 
for M. Adolphe Brongniart, as well as drawings of some remarkable 
fossil plants , and in .Tune, 1 828, the labour of admeasurement was 
b 
