1862.] 



HARKNESS PERMIAN STRATA. 



217 



In their mineral nature these Scottish Permians have a great affi- 

 nity to the Rothliegende of the N".W. of England, and especially 

 that portion which is seen in the Ormside and Hilton section. 



The Corncockle area exhibits the lowest beds of the Scotch equi- 

 valents at several spots where these abut against the Lower Silurians. 

 These lowest beds are breccias made up of fragments of the surround- 

 ing Lower Silurians. One locality in this area, Dalton Hook, shows 

 the inferior sandstones in proximity to the Carboniferous rocks. 

 Here the breccias abound in limestone-fragments, have the aspect of 

 the lower breccias of Burrels, and, like these latter, were formerly 

 wrought for the limestone which they contain. 



Above the lower breccias the sandstones, with impressions as seen 

 at Corncockle, occur ; and any section taken across this part of 

 Annandale would exhibit the arrangement seen in fig. 5, which is 

 an extension of that given by Sir Wm. Jardine *. 



Fig. 5.- 



-Section across iJie Permian Strata of Annandale. 

 Distance 8 miles. 



3. Sandstone, with FossU Footprints at Corncockle Mnir. 

 2. Permian breccia. 1. Silurian rocks. 



The Annandale Permians do not show a fuH series of the Eothlie- 

 gende : in order to see the other members, it is necessary to have 

 recourse to the Mthsdale areas. The one which best exhibits this 

 is seen in the district around Dumfries (fig. 6), extending from a 



Fig. 6. 



-Section of the Permian Strata of the southern "part of the 

 Valley of the Nith. 



E. 



Forthorwald. 



4. Peat. 3. Permian breccia. 2. Sandstone with Footprints. 



1. Lower Silurian rocks. 



* Ichnology of Annandale, p. 16. 



