124 COAL-FIELD OF CLACKMANNANSHIRE. 



Field of Scotland, and, according to every obser- 

 vation, no coals of workable thickness have been 

 found on the north side of the River Forth, far- 

 ther than about a mile to the westward of Alloa. 

 This north line of the Great Coal Field of Scot- 

 land, extends from near St Andrew's in Fife, passes 

 a few miles to the south of Kinross, skirts the face of 

 the Ochill Mountainsin Clackmannanshire, passesto 

 the westward of Craig Forth beyond Stirling Castle, 

 and from thence by the Campsie Hills to the River 

 Clyde near Dunbarton. 



Two sections were formerly produced ; the one 

 a profile from the top of the Wood Hill of Al- 

 va to the River Forth, being a distance of six 

 miles, shewing the chief beds of coal and disloca- 

 tions of the strata ; the other a perpendicular sec- 

 tion of all the coals and accompanying strata, to the 

 depth of 703 feet, containing no less than 1421 beds 

 or alternations of strata. These sections were made 

 from exact measurements taken by myself, and are 

 now referred to, with additions and alterations. 



With regard to the alluvial cover, I stated that 

 it was of two kinds, viz. the Recent Alluvial, formed 

 by the Rivers Forth and Devon ; the other what 

 is termed the Old Alluvial, which forms the higher 

 part of the country. The surface of the alluvial 

 betwixt the Ochill Mountains and the sea, is bold 

 arable, hill and dale, the ridges and valleys lie pa- 

 rallel to the Ochill Mountains in an east and west 



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