MIDDLE DISTRICT OF SCOTLAND, 63S 



tion of sandstone, will adduce the various kinds 

 of structure exhibited by the red sandstone, as so 

 many facts illustrative of its plausibility, and the 

 miner and engineer, if they adopt this opinion, 

 will probably obtain an easy solution of difficul- 

 ties that occur in their respective arts, ajid prs^c- 

 tical rules of value and importance to them. 



APPEN- 



