72 
greenstones, Silurians, mountain limestones, coal measures, 
and a few chalk flints, all well rounded, and capped by a 
deposit of brownish coloured till, with angular stones in it, 
of from 4 to 5 feet in thickness. A few small fragments of 
shells were met with in the gravel, but their genera could 
not be recognized. 
Above the section last described, and in the cutting of the 
Midland Railway, just before the latter enters the tunnel, 
is seen a face of 40 feet of well rounded gravel, parted by 
beds of brown sand, very similar to the deposits below, pre- 
viously described. They have a dip to the south. A few 
flints and small fragments of shells were also met with. The 
main valley of the Goyt runs here nearly north and south, 
and the Bugswortli valley enters it from the east. The 
gravel has been removed, if it ever was there, across the 
Bugsworth valley, but it makes its appearance again on the 
south side towards Whaley Bridge, and is also seen by the 
side of the turnpike road leading from the last named place 
to Chapel-en-le-Frith. The height of this deposit, at the 
entrance of the tunnel, is about 500 feet; much lower than 
the elevation of the three last described sections. 
Arnfield Section (No. Ip). 
This was exposed in making the Hollingworth (Cheshire) 
Reservoir, belonging to the Corporation of Manchester, and 
is in the Etherow Valley a little to the west of Glossop. 
It was first seen in cutting the goit from the Arnfield Brook 
to the reservoir. A few years since, in company with Mr. 
Prestwich, the writer examined the deposit, which consists 
of a gravelly till, containing plenty of foreign rocks, four to 
five feet in depth of which were exposed. It evidently lies 
on the top of the thick bed of till which occupies the lower 
part of the valley of the Etherow, that was exposed in 
making the new reservoir below Tintwistlc. In it marine 
shells were found in considerable abundance. Amongst 
others there were Turritclla communis, Fusus, Banfjius, 
Purpura lapillus, two species of Tellina, Cardium cdule, 
C. aculcatum, and Cyprina islandica. The elevation of the 
