ON THE 



CHART OF SHETLAND. 



BY J. M'CULLOCH, M.D., F.R.S. 



HAVING been lately engaged in a geological survey of the 

 Shetland islands, I had occasion to lament the deficiency which 

 British Geography labours under in the want of a map of this 

 district ; a want which was productive of considerable labour 

 and much uncertainty, and which eventually rendered it im- 

 possible to deduce any satisfactory conclusions respecting the 

 general direction of the strata, or the dependency and connexion 

 of those of a similar nature which were separated by wide in- 

 tervals. Had even the maritime outline been tolerably correct, 

 these difficulties would have been easily overcome, as the inte- 



A 



