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PROFESSOR JAMESON'S NOTES ON 
smaller granular than that of the Crif-Fell, and contains im- 
bedded contemporaneous pseudo-fragments of slate. This 
slate, which is of a brownish-red colour, is a compound of 
compact felspar, and scales of brown-coloured mica : it is 
of the same nature as some of the slates at the junction on 
Whinny Hill already described, and is traversed by veins 
of red syenite. The slate is but a modification of the sye- 
nite, — a fact which shews that the slate, syenite, and veins, 
are of contemporaneous formation. A little to the west of 
the Needle's Eye, there are patches of a conglomerate, 
composed of fragments of the various rocks of the district ; 
and to the westward of these, there is a display of strata, 
having the usual NE. and SW. direction, and a SE. dip 
under an angle of 60°. They are principally of rocks 
having a slaty structure ; and of these the following are 
the chief varieties we had an opportunity of examining. 
1. Slaty compact felspar, which is sometimes of a green 
colour, owing to disseminated earthy hornblende. 2, Slate, 
composed of compact felspar and brov/n-coloured mica. 
S. Slate of compact felspar and hornblende, in short, a 
variety of greenstone-slate. These slaty rocks contain 
beds of syenite, granite, porphyry, and compact felspar. 
The syenite is of a red colour, like that of the Needle's 
Eye; and is disposed in beds of considerable thickness, which 
alternate with the slate : contemporaneous portions of it oc- 
cur in the slate ; and veins of it, sometimes several fathoms 
wide, traverse the slaty strata, which, notwithstanding their 
magnitude, may be viewed as of contemporaneous forma- 
tion with the strata. The porphyry is of a green colour, 
with a felspar base, and contains scales of pinchbeck-brown 
mica. The compact felspar is red, has a perfect con- 
choidal and splintery fracture, and is not unlike some of 
the beautiful varieties of that rock found in Sweden. The 
slaty rocks and the syenite rocks are traversed by veins of 
