A HISTORY OF DEVONSHIRE 



cohesion of the laminae is pronounced, and for flags, ' lidstones,' or hedge 

 stones. 



The granite in places forms a good building stone, and where dis- 

 mtegrated furnishes material for gravelling walks, etc. 



The hornblende-epidote schists are used for building purposes and 

 road metal. 



The diabases, dolerites, etc., are used for road metal. Near Trus- 

 ham a hard greenstone has been dressed for building purposes, and 

 here and there the diabases are quarried for building materials. Such 

 felsites as the Roborough stone are suitable for building and for road 

 metal. 



48 



