NORTH BERWICK-LAW. 



243 



near Dunbar. It appears rising through the sand- 

 stone, and, had its junction with the neighbouring 

 rocks been hid by debris, it would have been a mi- 

 niature representation of North Berwick Law. 



The hard sandstone contained in the soft sand- 

 stone, presents a similar appearance. There we ob- 

 serve the hard sandstone rising through the soft, 

 and standing in the form of small eminences above 

 the softer stone. Had the line of junction of the 

 two sandstones been concealed, we would have been 

 inclined to believe that the hard sandstone was a 

 different formation from the soft, and rested upon 

 it. 



But appearances of this kind are not confined to 

 sandstone districts. They are common in moun- 

 tains composed of primitive and transition rocks. 

 Of these, we shall now mention an example, by way 

 of illustration of our idea in regard to the geognostic 

 position of North Berwick Law. 



Near Portsoy in Banffshire, there are several hills 

 of quartz, that rise rapidly from the surrounding 

 flat country, which is composed of highly inclined 

 strata of gneiss, hornblende rock, granite, &c. When 

 we trace these strata from the shore to the base of 

 the quartz hills, we observe them apparently shoot- 

 ing under them ; thus leading to the notion of these 

 hills being overlying masses over the highly inclin- 

 ed strata. But the same quartz occurs in other places, 

 in beds, and these beds vary in magnitude and extent, 



q2 



2 



