TYNDRUM. 309 



slate seem to be mixed with a portion of fine 

 granular-felspar, and approach to an indistinct 

 species of gneiss, in which quartz is the chief 

 ingredient. This continues till we arrive at In- 

 verouran, beyond which, rolled pieces of gneiss 

 are observed, and we soon begin to perceive the 

 symptoms of an overlying sienite- formation, with 

 its subordinate rocks. A substance then occurs, 

 which, containing hornblende, may be considered 

 as the link betwixt sienite and felspar-porphyry. 

 Farther on, and at the bridge of Baa ? we rind a- 

 gain quartzy mica- slate. At King's House, the 

 rock which appears in the bed of the river, is 

 felspar-porphyry, with crystals of quartz, felspar 

 and hornblende. Here, too, veins occur of a 

 substance inclining to hornstone- porphyry ; and 

 in the neighbourhood, there is mica-slate with 

 veins and layers of quartz and felspar. 



About a mile and a half west of Kansas House, 

 the front of the rock, on the left of the road, has 

 a remarkably line picturesque effect. Rising 

 abruptly from the plain, and presenting its up- 

 right furrowed brow in the shape of rugged pro- 

 jecting columns, it exhibits a rude resemblance 

 to the abutments and ornaments of a Gothic 

 cathedral towering to a point. This beautiful 

 and lofty rock is the commencement of the 

 great ridge which forms the south side of 

 Glencoe. 



Beyond King's House, an elegant species of 

 newer granite, with flesh-red crystals of felspar, 



u 3 



