82 A DESCRIPTION OF THE [Oh. V 



felspar has been washed away. The stratification is not 

 visible in the coarse granular rock, but in the pure granular 

 greenstone it is very distinct, stretching N. E. and S. W., and 

 dipping 60 towards the N. W. 



Not far from Kielvig, a small bay lies between perpen- 

 dicular rocks, called Little-Kielvig, where the clay-slate passes 

 into mica-slate ; for there is no longer any basis to the slate, 

 the whole being a collection of an infinite multitude of shining 

 folia, lying upon one another ; not such folia as appear on 

 greywacke-slate, but fresh and scaly, as they usually are in 

 gneiss. In this slate there are several beds of potstone, which 

 is greenish- white, coarse, and frequently splintery, translucent, 

 and very similar to jade, if it were only harder ; but it is only 

 semi-hard, and contains small folia of white talc. 



The clay-slate only makes its appearance in the vicinity of 

 the sound of Mageroe, and not at the North Cape, where the 

 diallage rock is also wanting. The island of Stappen consists 

 of gneiss ; and the nearest rocks of the steep North Cape are 

 of the same nature. This gneiss is more striped than slaty ; 

 its mica is black, in very fine folia, which lie single and insu- 

 lated; and the felspar is abundant, of a pale flesh-red and 

 white, and almost transparent : the quartz is grey and in dis- 

 tinct grains. This rock is certainly not situated above the 

 diallage rock. 



" These facts show that the diallage rock here belongs to 

 the remotest members of the primitive formation, and nearly 

 touches on the transition : and this rock is found in the same 

 position in Silesia, Prato, Genoa, and Cuba." * 



In this brief sketch of Von Buch's excellent observations on 

 the primary rocks of Norway, sufficient has been extracted to 

 show that the same mineral transitions and the same modes of 

 association occur in this country as characterise the equiva- 

 lent rocks of Cornwall. We would willingly enter into the 

 minute of this comparison, but they would occupy too much 



* Travels through Norway and Lapland, p. 279, el seq. 



