42S PROCEEDINGS OP THE GEOLOGICAL SOCIETY. [May 28, 



are more numerous and seem to have been carried for the most part 

 westward, a good sprinkling- being found upon the summit of 

 Latrigg, and upon the feil-side behind Latrigg up to 1250 feet, also 

 further down the valley on the north side up to 800 feet. 



Upon Sale Fell (1170 feet), on the west side of Bassenthwaite 

 Lake, is a very small patch of intrusive rock of a peculiar character ; 

 boulders of it are found upon the north side of Kirk Fell (31) to a 

 height of nearly 1250 feet, and upon the south side of the water- 

 shed uniting Kirk and Broom (30) Fells up to fully 1250 feet ; but 

 none have been observed further south, or anywhere to the north 

 of Sale Fell itself. 



Lastly, with regard to the height at which boulders of the vol- 

 canic series are found upon the Skiddaw- Slate area. Upon Mat- 

 terdale Common and the flanks of Mell Fell they occur up to a 

 height of 1400 feet, on the southern slopes of Blencathra up to 

 900 feet, upon Latrigg up to 1200 feet, on the south-western 

 slopes of Skiddaw to 800 feet. They are scattered over the whole 

 mountain-group north of "Whinlatter Pass up to 1670 feet; and 

 along the eastern flanks of Grisedale and Causey Pikes (32 and 34) 

 they occur below 1000 feet. Upon Maiden Moor (1887 feet) such 

 boulders are found to the summit, and at intervals all along the 

 ridge to the extremity of Cat Bells (5). At one spot, however, 

 called Hause Gate, the lowest between Maiden Moor and Cat Bells, 

 they are specially abundant. 



Boulders of the volcanic series are plentiful along the east side of 

 the Buttermere and Lorton Valley up to 800 and 900 feet ; on the 

 west side, they occur on Mellbreak (20) up to 1500 feet, upon Fell- 

 barrow (35) up to 1360 feet, and at lower elevations. 



On Starling Dodd (36 — height 2084 feet), but little more than a 

 mile due west from Bed Pike (19 — height 2478 feet) there are 

 syenite boulders to the very top, the Dodd itself being altered Skid- 

 daw Slate, almost surrounded by syenite at a lower level, except 

 quite near the summit of Red Pike. 



All over the area occupied by the rocks of the volcanic series, 

 perched blocks of the same kind of rock are very numerous at all 

 elevations up to considerably more than 2000 feet ; but details of 

 these cannot here be given. 



V. Drift Deposits. 



There are three different kinds of deposit in this district belonging 

 to the Glacial Period. 



1. Till. — Under this head I include patches or spreads of stiff 

 clay stuck full of smoothed and scratched stones and boulders, and 

 unstratified. It occurs every here and there in small patches among 

 the mountains, in rock-sheltered spots, and may frequently be seen 

 in the valleys either by itself or underlying a more gravelly deposit 

 next to be noticed. In some few places the clay is free from stones 

 and boulders. 



2. Drift-gravel. — This consists of subangular gravel (very rarely 



