35° 



OK THE HIGHLANDS. 



malie, by the Reverend Mr Frazer, as occurring 

 on the west side of Ben-Nevis, with a proportion 

 of sulphur, and (white marcasite or) iron-pyrites 

 containing arsenic. 



At some miles distance to the south-east of 

 Ben-Nevis, valuable pebbles, and even gold, are 

 said to be found. 



ADJACENT ROCKS. 



Having now, in the way of description, been 

 conducted to the summit, and around the base, 

 of this great and stupendous mountain, we shall 

 take a rapid survey of the adjacent rocks towards 

 the west. 



The hills which lie betwixt Glen-Nevis and 

 Fort-William, are composed of the slaty strata, so 

 often described, which, crossing the Glen, run 

 directly under the mountain. Along the tract 

 on the west of the Glen, which it was in my 

 power to examine, these strata are filled with 

 beds, and traversed by veins, of compact-felspar, 

 and of quartz, often mixed, and sometimes di- 

 stinct. At other places, these substances, blend- 

 ed together, form the base of a beautiful porphy- 

 ry, containing crystals of felspar and hornblende^ 

 which vary in magnitude. 



Near the house of Glen-Nevis, there is a curi^ 

 ous rocking- stone, or mass of mica- slate, of a glo* 

 bular figure, and of great size, which, as usual in 



