V 36g II I OEOIOGICAL ArrEABA-NCrS - ■ " ■ ■ '■ ■■ " 



also veins of granite ; but the circumstances of the ground 

 render it difficult to trace the junctions of the granite with the 

 gneiss. At the foot of the fall there is gneiss, lying nearly as 

 that last mentioned. 



151. There is an obvious analogy in the appearances, at this 

 junction of granite and gneiss, to those at the junctions of the 

 sienite and strata in Glen Tilt, and they afford strong grounds 

 for adopting a similar hypothesis with respect to their ori- 

 gin. 



ADDITIONAL 



I 



