SgO MINERALOGICAL OBSERVATIONS 



No part of this granite mass, appears to rise 

 quite so high as the other two Galloway masses 

 do, namely, in the Mountains of Cairnsmuir and 

 Criffle ; for Merrock, the highest mountain in this 

 quarter, appears to be transition. I say so, how- 

 ever, merely from a distant view of the mountain, 

 for I was not at it. There is much more verdure 

 on Merrock, than is usually seen on granite hills, 

 and its rocks are of a redder hue than the granite 

 of this quarter puts on. But if Merrock be not 

 granite, it must be immediately on the border of 

 the Doon granite on the west. 



This mass of granite, appears to bear the same 

 sort of relation to the stratified country, as I for- 

 merly found the Dee mass to have. The grey- 

 wacke, or grey- wacke- slate, no where that I could 

 see, comes into contact with it, but is every where 

 separated by the compact gneiss, and the strata of 

 this rock observe the usual direction, not varying 

 above four or five points ; and their ends on the 

 N. E. side of the granite, run directly towards it. 

 On the east side of the granite, they meet it in a 

 conformable position, and are either vertical, or 

 dip from it. They are much more highly inclined 

 than: those which meet the Dee granite. 

 - The Doon granite in general, is of the same 

 rtexture with that of the Dee, but there are two 

 '.peculiarities with respect to its relation to other 

 rocks, which are observable. One of these, I have 

 already described, namely, the occurrence of frag- 



