352 
HUGHES : INGLEBOROUGH. 
of the succession of strata and their identification by means of 
the included organic remains, for this was WilHam Smith. 
The younger was a man of about 37, a briUiant scholar 
of great academic distinction and full of imagination. Intellectual 
vigour that loved to grapple with the most difficult problems of 
the universe flashed out of his dark eyes and rippled in his rapid, 
racy speech, which was redolent of his home in the Yorkshire 
dales, for this was Adam Sedgwick. 
Nine years later, from the Presidential Chair of the Geo- 
logical Society, Sedgwick gave William Smith the title by which 
he will be ever fondly known- " the father of English geology." 
In 1822,* however, William Smith was working out the details 
of the geology of England for his county maps, and Sedgwick, 
who had recently been appointed to the Chair of Geology in his 
University, was also constructing a map of the district, and 
collecting fossils with which to illustrate his lectures. Here on 
Kirkby Moor they met for the first time, and together hammered 
out fossils from the Kirkby Moor flags, the highest beds of the 
Silurian seen in the north of England. The name Silurian 
was then unknown, and all these rocks were included in the great 
Greywacke formation. 
This is the record of very early work on the sub-division of 
the rocks afterwards known as Silurian. Sedgwick soon lectured 
upon the result of these researches, and used them in the syllabus 
which he published for the use of his class. 
I will not now reopen the old question of how much credit 
is due to him in the establishment of the position and divisions 
of the Silurian rocks, but I do think that this strong society 
of Yorkshiremen should see to it and protect the memory of one 
of Yorkshire's noblest sons. I have given my opinion of his 
work both in the pages of your journal, November. 28th, 1883, 
and in the life of Sedgwick, written in conjunction with Mr. 
Clarke (see vol. i., pp. 284-297, 529-539 ; vol. ii., 502-563). 
Now let us pass on to consider what parts of the Silurian 
rocks are exposed among the roots of Ingleborough, what is 
* Third letter from Sedgwick to Wordsworth on the Geology of the 
Lake District. See Hudson's Guide to the English Lakes, 5th ed., 1859, 
p. 202. 
