( 173 ) 
^111,— Account of the Small District of Primi' 
tive Rocks^ near StromnesSy in the Orkney 
Islands, 
By Mr George Anderson of Inverness. 
In a Letter to Professor Jameson. 
(Read llth November 1821.) 
Dear Sir, 
The point on which I have taken the hberty of address- 
ing you at present is not of any great importance, but I 
think you will still consider it worthy of notice. It refers 
to the extent of the Primitive District in the Orkneys. 
From the notes I had taken from your Lectures, and, if 
I recollect well, from your Mineralogical Travels, I was 
led to expect that this district was only one or two miles in 
length, by half as much in breadth. While examining it, 
however, along with my friend Mr Charles Clouston, 
with whom I spent some weeks this last summer, I found 
that the longitudinal direction of the primitive strata lies 
