[ 337 ] 



XLVIII. Jn Account of the Coal Measures or Strafa, lately 

 explored, on tlie JVater of Brora, in the t^.ley 3 of 

 Clyne, near the SE Coast of Sutherland in Scotland, ex- 

 tracted from Capt. John Henderson's Agricultural 

 Survey of the County of Sutherland, just pubhshed. 



Coal has been bored for, and found on the banks of the 

 river Brora, on the Sutherland estate, and a shaft js now 

 sinking, to the depth of 250 feet, (a particular account of 

 the strata is annexed,) under the superintendance of Mr. 

 William Hughes, an eminent eimineer from North Wales. 

 Salt will be made, as has former' y been done in that vicmiiy ; 

 ironstone may be found, (appearances of it being observed 

 in boring for coal,) and the shores abound with limestone. 



Mr. Telford has seen, aid given his opinion as to the 

 best mode of searching for, and working the coal at Brora. 

 The work is carried on, (as above stated,) under the di- 

 rection of Mr. William Hughes, who has had much ex- 

 perience in such undertakings, and has been employed oa 

 the Caledonian Canal since its commencement. 



Copy of the Journal kept while horeing for Coal at the Water 

 of Brora, County of Sutherland', giving a Section of the 

 several Strata. 



Soft grey stone in thin layers, contaiuirg iron-stone") 



halls J 



Soft dark grey sandstone in thin layers, and stones ; 

 as above - - - - - " . " 5 



Nov. ) Dark, very soft coal metal, in thin layers, with 

 partings of yellow pyrites, and water, which 

 rises to the surface • - - - - - 

 lo'Dark grey stone in thin layers, with soft partings 

 19 Dark hard stone with a strong sujphureons smell, ) 

 perhaps alum shale - • - - - S 



Soft sandy stone, rather lighter coloured than the i 

 above - - - - -_- ' . ' > 

 Lightish-coloured sandstone, containing marine) 

 petrifactions • - - - - -) 



^'ery hard ironstone ..---- 

 30 Hard grey clunch, a common coal-measure - 

 Dec. IS Light-coluured metal stone, rather soft in boreing- 

 J8 Lightish-coloured clayish strata, soft in bureing,^ 

 and containing a considerable portion of sparry > 

 natter and marine petrifactiont • ' 'j 



Depth of 



■^ach 

 Stratum. 



63 



hi. 



lOJ 



9 

 6 



No. 



