\ 



OF CLACKMAN ANSHIRE, 



5^5 



quently covered with impressions of large trees^ 

 which, from their singular appearance, are termed 

 by the miners plough-furrows. 



Among the vegetable impressions, a great 

 many belong to the class Cryptogamia ; but the 

 order or genera are not easily ascertained. It 

 would require a very expert botanist to arrange 

 them systematically. Many of the plants are not 

 indigenous to Great Britain ; nay, many of them 

 are not so even to Europe. Among the speci- 

 mens sent, those of the reed, Arundo, and palm- 

 trees, are peculiar to tropical climates. These 

 facts give rise to many theories respecting the 

 formation and vast changes which have taken 

 place in our globe. 



Of the mussels, no recent specimens are now 

 to be found in the district ; they are similar to 

 the fresh- water mussel, Mytilus anatinus, but they 

 are less th^n those now found in the district. 



Of these organic remains, I have sent specimens 

 of such of the varieties which have come within mr 

 observation. 



The stratification of the coal-field immediately 



adjoining the Ochill Hills will be described in a 



lire communication. 



1 i 4 



