[ 127 1 



a durabilïty, which the otliers do not possess. 

 In one place a vein of trachyte is observed in- 

 serted in a mass of sedementary rock, in the same 

 manner as that of the Granite above raentioned; 

 in this case however the igneous rock lias im- 

 parted a darker color and greater hardness to its 

 immediate neighbourhood, than what is presented 

 by the same rock, at a little distance. In another 

 spot, what appears to be a fine and close grained 

 Granite, is seen; bu.t as the igneous rocks and 

 particularly the syenitic are known to assume 

 occasionally the appearance of one another, ac- 

 cording to the conditions, under whieh they are 

 produced, the position seems rather to favor the 

 idea of its being merely a variety of trachyte. 

 The sedementary rocks are sometimes seen hori- 

 zontal, then again perpendicular, or inclined at 



some angle to the horizon ; as if the volcanic 

 matter from below had so disposed them, after 



breaking up their onginal continuous crust. 



The Chirempag next falls into a wide chasm of 



the rocks and, after running about 4oo feet under 



ground, again flows out further down. Below 



this, the ordinary boulders of syenitic Granite 



again made their appearance jfor the first time 



in this stream ; they were blocks of about 4 feet 



square and Jying more than 100 feet above the bed 



of the Chimangeunteung. 



The original situs of the Granite lias thus not 



been discovered; wherever that spot may be, yet 



it cannot be far distant. The Mocks of all the 



Granites met with do not bear evidence of having 



