118 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Dec. 17, 



Besides the localities alluded to as furnishing Professor Sedgwick 

 with fossils, there occur, S.W. of the places named, other localities 

 in the area under consideration which also afforded him organic 

 remains. At Knockmurton-fell Graptolites latus and G. Sagittarius 

 have been found. Here the dip of the Skiddaw slates, which are 

 hard and flaggy and of a grey colour, is W. ; but this is a local dip. 

 In this locality the Skiddaw slates yield iron-ore, one vein of which, 

 about five feet in thickness, striking N. and S., and with an inclina- 

 tion towards the E., is here wrought. 



To the east of this, at Blake-fell, Professor Sedgwick also obtained 

 Palwochorda minor ; and at Lowes-fell, on the north side of Lowes- 

 water, he mentions Chondrites acutangulus as occurring. Besides 

 this, I have found here Diplograpsus pristis. The general dip of the 

 strata in this part of Cumberland is N.N.W., and some of the fossili- 

 ferous rocks are on the line of strike of the beds of Barff and Whin- 

 latter-fell. The anticlinal axis, previously mentioned as traversing 

 the country W.S.W. from Coldale, seems to run to the southward of 

 these fossiliferous rocks, and to cross Mellbreak, which is situated on the 

 west side of Crummock-water, and is a hill having S.S.E. dips on its 

 southern flank. In proceeding northwards from Crummock-water, 

 down the Yale of Lorton, the mountains on both sides of this valley 

 are made up of strata which correspond and conform with those on 

 the west side of Bassenthwaite Lake, and are an extension W.S.W. of 

 the rocks of that locality. There is an abundance of " Screes " on 

 the flanks of the mountains on both sides of the Yale of Lorton, and 

 also on Mellbreak, which would doubtless afford abundance of fossils 

 if they were well examined. 



On the north side of the Embleton valley are seen ridges of com- 

 paratively low hills, separating this valley from the vale of the Der- 

 went. On the south side of these ridges there occurs at Lambfoot- 

 fell a syenite which, when well exposed in its interior, is seen to be 

 made up of very distinct crystals, but which near the outer margins 

 becomes fine-grained and more trappean in its aspect. In this latter 

 condition it is seen at the farm of Crag, near Bassenthwaite Lake, and 

 eastward from Lambfoot-fell on its line of strike. Immediately north 

 of this syenite, at Lambfoot-fell, are seen hard, flaggy Skiddaw slates, 

 dipping N.KW. 20°. ■ 



This inclination is the reverse of that which occurs on the opposite 

 or south side of the Embleton valley, and indicates the presence in 

 this valley of another anticlinal axis, parallel to the one which 

 manifests itself to the southward. The Skiddaw slates of Lambfoot- 

 fell incline towards a small valley separating this hill from the Hay, 

 which forms part of another ridge north of the Lambfoot-fell range. 

 In the Hay the Skiddaw slates are of a similar nature to those of 

 Lambfoot-fell, and also have the N.N.W. inclinations. East from 

 the Hay the ridge becomes higher, and forms Dunthwaite-fell, where, 

 at Elba Plains, there are the same hard, grey, flaggy rocks, with 

 intervening slaty beds, as seen at the Hay. Here also the dip is 

 N.N.W. 35°, and the rocks, as well as the hill, slope away towards 

 the Biver Derwent. 



