MINERALOGY OF ST ANDREw's. 



151 



which presented no marks of igneous influence, — • 

 he could not have avoided drawing the conclusion, 

 that since the bed of slate- clay, which contains 

 the septarium, presented no marks of the action 

 of heat, the septarium contained had never been 

 exposed to its influence. 



Having thus shortly given an account of the 

 rocks belonging to the independant coal formation 

 which occur in the neighbourhood of St Andrew's, 

 our attention will next be directed to a small por- 

 tion of the Newest Floetz-trap formation which 

 covers these rocks. 



In many places in Fife, overlying rocks of Ba- 

 salt, Clinkstone, Felspar, Porphyry -slate, and 

 Glaystone, occur resting on the rocks of the old red 

 sandstone, and the rocks of the coal formation. 

 But it rarely happens that distinct sections of these 

 rocks can be found, or the relations which they 

 bear to one another ascertained. On the sea-shore, 

 to the eastward of St Andrew's, a portion of the 

 newest floetz-trap occurs in such a situation that 

 its geognostic characters can be ascertained with 

 precision. 



This formation rests upon beds of sandstone, 

 and the other rocks described above. It extends 

 about SCO yards along the shore, and is connected 

 with a more extensive deposition of the same 

 kind, which stretches inland, but whose history 



