838 



DR B. N. PEACH AND DR J. HORNE ON 



last year of re-examining certain typical sections in Liddisdale, Eskdale, and westwards 

 towards the Annan valley. A large collection of plants was obtained by Mr Kidston 

 and Mr Macconochie, which are described by Mr Kidston in his paper now presented 

 to the Society * on " The Fossil Plants of the Carboniferous Rocks of Canonbie, 

 Dumfriesshire, and of Parts of Cumberland and Northumberland." On the 

 evidence of the plants he correlates the Rowanburn coal-bearing group with the 

 Lower Coal-measures, the Byre Burn group with the Middle Coal-measures, and the 

 red sandstones and shales in the Liddel between Penton and Riddings Junction and 

 in the Esk north of Canonbie bridge with the Upper Coal-measures of England. 



Important information has been supplied by two deep bores sunk in recent 

 years through the red sandstones and shales (Upper Coal-measures) near Canonbie. 

 By the courtesy of His Grace the Duke of Buccleuch, we have been furnished with 

 copies of the journals of these bores, and have received his permission to publish them. 

 We likewise obtained leave to examine the cores of these deep bores, now stored at the 

 Rowanburn Colliery ; and in the course of our work we have been supplied with much 

 information by the mining managers. For such valuable aid, so generously rendered, 

 we desire to express our cordial thanks. 



In the sequel, we propose to describe in turn the various subdivisions of the 

 Carboniferous system in the tract extending from Liddisdale to Annandale, illustrating 

 the geological structure of the region by a series of horizontal sections. Thereafter 

 it will be shown by means of comparative vertical sections that the Lower Carbon- 

 iferous sequence of the Scottish border closely resembles that of Northumberland, and 

 differs in important points from that of Central Scotland. 



II. Description of the Carboniferous Subdivisions in Eskdale 



and Liddisdale. 



The order of succession of the strata and the lithological characters of the 

 various subdivisions of the Carboniferous system of the Scottish border is presented in 

 the subjoined table : — 



* Trans. Roy. Soc. Edin , vol. xl. pp. 741-833. 



