DOMAItf HI. ARGILLACEOUS. 



above the pudding-stones ; but their inclination it 

 always towards the west. 



" The entire mass of this mountain, elevated 

 1181 fathoms above the sea, has then been raised 

 by the same revolution, that is, this revolution 

 has given a vertical position to the whole mass oi 

 these beds, originally formed in a horizontal one, 

 For all these layers having very nearly the same 

 position as those pudding-stones, they being im- 

 bedded in the midst of the mountain, and having 

 undoubtedly undergone this change, it is impos- 

 sible not to believe that the position of all the 

 parts of the mountain has originally been the 

 same, and that this position has experienced ths 

 same change by the same cause."* 



Such is the account given by this great observer 

 of the most remarkable argillaceous glutenite 

 which has yet been discovered ; and it is worthy 

 observation, that this instance, among many 

 others, shows the error of the division, proposed 

 by some, of bricias and pudding-stones ; for here 

 both angular fragments and round pebbles are 

 found in the same mass. 



A great part of the north of Scotland, and 

 almost the whole of the Orkneys, consist of an 

 . argillaceous sand-stone, with interspersed masse* 



* San?*, vol. iii- 138. S^o. 



