ON THE ORIGIN OF COAL. 

 Fig. 3. 



179 



yds. ft. 



a Coal, Stone Mine 2 



b Black Shale, &c 4 



c Canal or Two Feet Mine 2 



d Tender Metals, containing the fossil tree, Black Bands and 



Rock 22 



e Coal, Peacock Mine 2 



/ Floor full of Stigmaria ficoides. 



The above trees have been alluded to for the 

 purpose of showing the different positions which 

 they are met with, and not as the only instances 

 of upright specimens which have been found in 

 the Lancashire Coal-field. For after eight years' 

 observation, I am led to believe that most mines 

 of any considerable thickness, if carefully ex- 

 amined, will give some evidence of upright trees. 



The resemblance of seams of Coal to beds of 

 peat, has long been advanced as a proof that Coal 

 was formed from vegetable matter, grown upon 

 the places where it is now found. All the early 



