in the Neighbourhood of Edinburgh. 



243 



style in which they are written, for calling my attention to the seams of limestone at 

 Moredun Mill, of the existence of which I had been previously unaware. It will be 

 seen that I have not under-rated their importance. In fact, they are in correspon- 

 dence with what I have since observed in several places, that more than two, or even 

 three alternating beds of marine limestone occupy different places in the carboni- 

 ferous system of the south of Scotland. 



SECTION IV— THE BURDIEHOUSE SYSTEM OF STRATA. 



The system of strata connected with the limestone of Burdie- 

 house, is to the east of the great fault described in the last sec- 

 tion, which has brought to view deep-seated beds. 



TRAP OF THE 



PENTLANDS 



Coal measures of Loanhead. 



s 

 Scale of one English Mile. 



NORTH ESK. 



I may now remark, that, in reference to the section given, I 

 shall point out, in their several orders, first, the strata in im- 

 mediate association with the limestone of Burdiehouse ; secondly, 

 the description of overlying beds contained between the Burdie- 

 house limestone and the limestone of Fountain-well, which is 

 the name given to the site of a cluster of houses close to the 

 village of Loanhead ; thirdly, the character of the Fountain- well 

 limestone, which appears to differ from that of Burdiehouse, in 

 containing marine remains ; and, fourthly, the rich coal-measures 

 of Loanhead which take the highest place in the system. 



Hh2 



