LAKE-BASINS OF CUMBERLAND AND WESTMOEELAND. 165 



Fig. 6. Transverse section along the line marked fig. 6 in the plan, fig. 11. 



7. Transverse section from Middle Fell to Illgill Head. 



8. Transverse section along the line marked fig. 8 in the plan, fig. 11. 



9. Transverse section from Buckbarrow to the Screes. 



10. Transverse section along the line marked fig. 10 in the plan, fig. 11. 



11. Plan of Wastwater, with depths given in feet, and lines along which the 



longitudinal and transverse sections run. 



B. Horizontal sections to illustrate the forms of Langdale, Easdale, and other 

 valleys, the depths of lakes and tarns, the heights of the mountains, and the 

 thickness of the ice ; together with plans of Grasmere and Easdale Tarn. All 

 on a true scale of 1 inch to 1 mile. 



Fig. 12. Longitudinal section from Sergeant Man to Loughrigg Fell, through 

 Codale Tarn, Easdale Tarn, and Grasmere, with the outlines of moun- 

 tains on the north. 



13. Transverse section through Langdale and the heads of Easdale and 

 Far Easdale. 



14. Section across the lower ends of Great Langdale and Grasmere from 

 Lingmoor to Nab Scar. 



15. Section across the head of Great Langdale just below the junction of 



Oxendale and Mickleden, from Pike of Blisco to Harrison Stickle. 



16. Plan of Easdale Tarn, with depths given in feet. 



17. Plan of Grasmere, with depths given in feet. 



18. Section from Helvellyn summit through Red Tarn. 



19. Section through Bowscale Tarn; the dotted line may represent a 

 former snow- slope. 



20. Section through Hanging Knotts and Angle Tarn. 



21. Section from Pavey Ark through Stickle Tarn. 



C. Map of a portion of the southern part of the Lake-district, a continuation 

 southwards of map given in former paper (Quart. Journ. Geol. Soc. May, 1874). 

 Scale -£ inch to 1 mile. 



D. Horizontal sections to illustrate the depths of Coniston Water and Winder- 

 mere, the form of the ground along various lines, and the thickness of the ice. 

 All on a true scale of 1 inch to 1 mile. 



Fig. 22. Section from Wetherlam to Wansfell Pike. 



23. Section from Coniston Old Man to a point east of Windermere Rail- 

 way-station. 



24. Longitudinal section through Codale and Easdale Tarns, Grasmere, 

 and Windermere. 



25. Transverse section through Windermere, near Wray Castle. 



26. Transverse section through Windermere, 2£ miles above the lake-foot. 



N.B. In all cases the thickness of the ice shown in these horizontal sections 

 is probably below the maximum. 



Discussion. 



Mr. Brew said that it was quite unnecessary to praise the paper, 

 but remarked that in the section 1000 feet of ice was shown passing 

 with a very slight slope over the present very uneven ground, and that 

 he did not think that ice sloping at so small an angle could produce 

 such inequalities of surface. He thought that the production of 

 hollows must take place only at the termination of the glaciers. 



Prof. Ramsay said that his theory of the formation of rock-basins 

 seemed to be gradually gaining ground. It is not impossible that 

 rock-barriers sloping up in the middle of valleys may have origi- 



n2 



