nd \ 
578 MR, A. R. DWERRYHOUSE ON THE GLACIATION oF [ Aug. 1902, 
Rowantree Rigg is a hill consisting, so far as can be seen, of a 
gravelly clay with boulders. 
The farms of Gill Town, Unthank, and Peghorn Lodge are situated 
on a plateau of Drift, which terminates on Harwood Beck in a line 
of cliffs. From sections in these cliffs, the plateau is seen to consist 
chiefly of a hard blue Boulder-Clay, which becomes more sandy in 
its upper part. The Drift-plateau is continued upward on the 
sides of the valley by mounds of Drift of a more morainic character. 
A clear section of this is to be seen in Haster Sike, opposite Bink 
House (10), at a height of 1500 feet ; it consists of blue Boulder- 
Clay, with many stones both large and small. The boulders consist 
principally of sandstone, limestone, and shale, and are for the most 
part angular, but some of them are subangular and striated. Basalt 
appears still to be absent. Upwards of 20 feet of Drift is exposed 
in this section, but the bottom is not seen. ‘There is no lateral 
moraine at this point. 
Kaster Sike rises in a peat-bog known as Sour Mere, which is 
confined between the edge of the Drift and the side of Touting Hill, 
at a height of about 1700 feet. The peat has grown to such an extent 
that it overlaps the clay in some parts. 
At Coarse-Foot Hill (11) a dyke of basalt cuts across Harwood 
Beck, and below this point basalt forms a conspicuous constituent of 
the Drift. 
At or about Peghborn Lodge (12) is the point where the Drift of 
Harwood Beck unites with that of Cow Green. Coarse-Foot Hill, 
Seavy Hill, and several others close by consist of blue Boulder-Clay, 
with boulders of limestone, shale, and basalt, many of them being 
striated. 
The valley of Langdon Beck is covered with Drift similar in 
character to that of the main valley, but containing only Carboni- 
terous rocks such as may be found in situ in the valley itself. 
The surface of the Drift is deeply channelled by streams, but the 
mounds are not so well marked as in the larger valleys. The 
lower end of the valley is closed, or nearly so, by a ridge of Drift, 
a lateral moraine of the Harwood-Beck Glacier, and the stream 
has had to cut its way through the solid Carboniferous rocks at 
Valence Lodge. 
The Parsonage (13) at Langdon Beck stands on a hill of Drift, 
consisting, so far as can be seen, of a gravelly clay. 
Cocklake Rigg and Widdybank Pastures (14) are occupied by long 
and somewhat curved ridges of gravelly Drift, sometimes accom- 
panied by stiff Boulder-Clay. On Cocklake Rigg the ridges 
run in an approximately east-and-west direction, but as they 
are traced into the lower ground of Widdybank Pastures, they 
gradually curve round towards the south, until at Loom Sike they 
are running from north-west to south-east. 
At Whey-Sike House this set of mounds is joined by another set 
running almost due east and west, being a continuation of the series 
at Widdybank Farm. From this point onward there were no more 
tributary glaciers until the junction with the western or [rish-Sea 
ice, below the town of Middleton-in-Teesdale. 
