326 GEOLOGICAL APPEARANCES 



small distances of each other. It must be recollected, that the 

 ordinary stretch through the valley is between 30° and 60° E. 

 of N., while the dip is uniformly to the south-east. Near the 

 southern bank, a little below the face of rock in which the 

 strata are seen lying over the sienite, are some strata standing 

 up in the river, which stretch N. 97° E., and are almost verti- 

 cal. Within twenty feet of these, there is, on the north side of 

 the stream, a large mass of strata of gneiss and limestone, 

 which stretch N. 78° E., and dip to the north at an angle of 

 40'. Not thirty yards from thence, the road, which runs along 

 the edge of the ' northern bank, has been cut into some strata, 

 composed of actinolite, felspar, mica, and a little carbonate 

 of lime ; and these stretch N. 165 9 E., with an easterly dip of 

 24°. Within a hundred yards, on the southern bank, and far- 

 ther up the stream, are some strata, which stretch N. from 78° 

 to 83 Q E., and dip to the north at a large angle. 



58. Where the strata in the southern bank lie over the main 

 rock of sienite, we did not observe that they were cut by any 

 veins of sienite. But such veins abound in most of the neigh- 

 bouring masses of strata, of which the irregularities have been 

 just described, and they traverse them in every direction. 

 Many of the veins contain little besides red felspar, but the fel- 

 spar resembles that of the sienite ; and I remarked, where the 

 main rock of sienite was in contact with some strata of compact 

 dolomite, penetrated by other minerals, that the substance of 

 the rock was sometimes merely felspar for two or three inches 

 from the line of junction. 



59. In the pure white granular limestone, there are veins 

 consisting of reddish felspar, minutely mixed with quartz. 

 The limestone has yielded more readily to the action of the 

 water, and left the veins very distinctly exhibited in their pro- 

 jections on the surface ; but the fracture of the rock shews 

 the substance of the vein to be intimately blended with 



the 



