deposited in water. 
. n i 1pf io lio-hter coloured laminated, and solid 
fells, includes tak g ’ ree nish or dark colour, with numerous 
grauwacke of fine g , . exte nsive plane surfaces in various 
long intersecting join s, , n Barbon fell, Casterton fells, &c. 
directions. ihe U P1 } , , vvlrich near High Borrow- 
include more of those took -naceous bed wh cl i ^ 
bridge and in Long Sleddale, diversify the A tMng Uke 
some approach to common dose gr ame ^ in Scoflan d, the 
the coarse quartzose grauwacke ot t e , . raIe ly 
Longmynd in Wales, and the Cavan district m Ireland ,» 1 
,, ^ pastern side of the Cumbrian slaty region. No org 
seen on the southeastern side ^ ^ ^ ^ The highest point ot 
HonriU fells is 2160 feet; Middleton, Barbon, and Casterton fells 
S , 1000 feet Whether these arenaceous rocks pass by msensib e 
X"he fosslllferous 
superficial detritus. 
Following to the east south-east, the course of the narrow band of 
slate rocks, "subjects of great interest present 
observed, this band runs, almost for its whole length, between lin^ 
limestone, the northern being the returning and eontaBnoo. ; edge of the 
horizontal beds in the elevated Penine region ; the southein ^e „ 
row line of rocks set on edge or dipping violently o the south, so a to 
suggest the idea of a great fracture taking place al„ ng tel 
rocks, having that line as its axis, and producing an 
to the south! the superficial rocks having been wholly removed along 
line of disturbance. (See Diagram , A o. 2.) 
A parallel fault on the south side, also causing a downthrow ir . the 
same direction for a length of thirty miles east of Kirby Lonsdale 
indicates the intensity of the forces concerned. The slates seen a g 
the range of this narrow band vary much, and deserve particular no ice, 
in consequence of the light they appear to throw on that very obscure 
subject, the cleavage of slate. The great limestone plateau, which sup- 
