Vol. 68.] GLACIATION OF THE BLACX COMBE BISTEICT. 421 



coincides with the main road between Egremont and Ravenglass,. 

 after which it follows the railway to near Silecroft. I have seen 

 boulders of the granite as far south as Silecroft, and they have- 

 been recorded by Mr. J. D. Kendall^ near Whicham Hall, and- 

 by Charles Smith - near Millom (see also p. 444). With the ex- 

 ceptions stated below, most of the other boulders in the drifts 

 south of Bootle were derived from Cumberland, or from the sea- 

 bed off the Cumberland coast. On the beach at Hycemoor (near 

 Bootle Station) grits and grauwackes, like those of the South- West 

 of Scotland, are of common occurrence, and so too are porphyrites 

 similar to those of Dumfries. Grauwackes also occur on Silecroft 

 beach, and seem to extend as far eastwards as the Criffel Granite. 

 I found several east of Nicle Wood on the eastern side of the 

 Whicham Valley, near its mouth, and boulders also of Scottish 

 porphyrites, both here, and near Whicham (compare the Castle- 

 Douglas porphyrites). On Bootle Fell there was a hornblende- 

 granite similar to a Galloway granite, and near Whitbeck some of 

 the boulders are of the Dalbeattie or Cairngall Granite types. 

 No boulders of Ailsa Craig microgranite were seen. 



IX. PheNOMEIJ^A OCCrEEING BUEING THE KeTEEAT OF THE IcE. 



(]) Moraines and Trails of Boulders. 



Between the 500- and 800-foot contours, on the slopes of Stainton 

 Fell, south of the mouth of Eskdale, there is a series of low morainic 

 ridges, about a mile in length, trending south-south-westwards, 

 and breached near the centre by Stainton Beck. Farther south a 

 splendid moraine, with the same direction, descends to, and follows, 

 the 700-foot contour for more than a mile, to a point about half a 

 mile east-south-east of High Corney. Another, south-east of High 

 Corney, lies between 500 and 600 feet. 



The slopes of Waberthwaite and Corney Fells, between 700 and 

 1000 feet, are covered by a series of less perfect, but quite distinct, 

 moraines, or morainic terraces, trending north and south, formed 

 as the ice slowly withdrew by lateral shrinkage. Thicker deposits 

 of Boulder Clay lie at a lower level between the steeper hill-slope 

 with moraines above, and the channelled granite-plateau below, 

 which, with its gravelly covering, reaches a height of between 400 

 and 500 feet. These moraines were left by Lake-District ice,, 

 confluent with the Irish-Sea ice. 



West of Biickbarrow Beck, near its junction with Kinmont^ 

 Beck, the moraines take a south-westerly trend, crossing the con- 

 tours nearly at right angles. The valley of the Kinmont Beck was- 

 choked by drift, and is now being re-excavated, the relics of in- 

 filling material being re-arranged and redistributed by the stream 

 as a series of terraces (PI. XLI, fig. 1). On Bootle Fell ridge- 



1 ' Distribution of Boulders in West Cumberland ' Trans. Cumberland 

 Assoc, pt. V (1879-80) p. 155. 



2 'Boulder Clay ' Trans. Cumberland Assoc, pt. iii (1877-78) p. 103. 



