OF PAPA STOUR. 



175 



mental rock. In Bressay, the sandstone includes 

 beds of slate-clay, and contains vegetable impres- 

 sions, similar to those common in the sandstone of 

 the coal-fields of the Lothians. Hence it seems 

 reasonable to conclude, that the different rocks 

 in the island of Papa Stour, together with the 

 sandstone of the Zetland Islands, belong to the 

 Independent Coal Formation. 



I shall be happy, if this communication shall 

 be thought to afford an answer, in some degree 

 satisfactory, to two of the mineralogical queries 

 suggested by my esteemed friend, the President 

 of the Wernerian Natural History Society. 



9 



