Vol. 58.] THESDALE, WEARDALE, AND THE TYNE VALLEY. 607 
glacier was continuous in a northerly direction with the ice of the 
Southern Uplands of Scotland and the North-Tyne Glacier, and 
when at its maximum deflected the latter glacier to the north- 
eastward, causing a movement in that direction along the southern 
flanks of the Cheviot Range. It would not appear, however, that 
the Solway ice ever crossed the North Tyne above the Roman Wall. 
(xiii) At the commencement and also at the end of the glaciation 
the Valley of the North Tyne was occupied by a glacier flowing in a 
general south-easterly direction, but, as already stated, this was 
deflected to the north-east by the eastward-flowing stream from 
the Solway district at the period of maximum glaciation. 
(xiv) The southern margin of the South-Tyne Glacier passed 
across the heads of West and Kast Allendales, and Devil’s Water, 
and over Blanchland Common into the valley of the Derwent, 
thence by way of Edmondbyers, Muggleswick, and Horsleyhope into 
the Valley of the Browney, a tributary of the Wear, where it joined 
the northern boundary of the Weardale Glacier. 
(xv) A series of ice-dammed lakes, with a corresponding series of 
overflow-channels, many of which are now streamless, was produced 
along this margin. 
The western face of the Pennine Chain still remains to be 
worked out, and much more field-work will be necessary before the 
complicated Glacial phenomena of the Northumberland and Durham 
Coalfield and the Carboniferous uplands between this and the 
Cheyiots can be fully elucidated. 
In conclusion I should like to thank Mr. Percy F. Kendall for 
the information which he kindly gave me with regard to the Glacial 
lakes of Cleveland, and the principles which he had drawn from his 
recent work in that area, for without this information I should have 
beep unable to work out many of the complicated phenomena of 
the district described in this paper. 
EXPLANATION OF PLATES XXIX & XXX. 
Puate XXIX. 
Map of the glaciers and glacier-dammed lakes in the Teesdale, Weardale, and 
Tynedale areas, on the scale of about 5 miles to the inch. 
Puate XXX. 
Map illustrating the glaciation of Teesdale, Weardale, and the Tyne Basin, 
on the scale of about 6 miles to the inch. 
Discusston. 
Mr. P. F. Kenpat offered his warm congratulations to the Author 
upon a very valuable piece of work, in a district presenting unusual 
difficulties. The high, bleak, inhospitable moorlands were exceedingly 
